public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-div";
var metadataProvider = new TestModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var validationSummaryTagHelper = new ValidationSummaryTagHelper(htmlGenerator)
{
ValidationSummary = ValidationSummary.All,
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "class", "form-control" }
});
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent("Custom Content");
Model model = null;
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
validationSummaryTagHelper.ViewContext = viewContext;
// Act
await validationSummaryTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(2, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("class"));
Assert.Equal("form-control validation-summary-valid", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("data-valmsg-summary"));
Assert.Equal("true", attribute.Value);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal("Custom Content<ul><li style=\"display:none\"></li>" + Environment.NewLine + "</ul>",
output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_ThrowsIfRouteAndActionOrControllerProvided(string propertyName)
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var anchorTagHelper = new AnchorTagHelper(htmlGenerator)
{
Route = "Default",
};
typeof(AnchorTagHelper).GetProperty(propertyName).SetValue(anchorTagHelper, "Home");
var output = new TagHelperOutput(
"a",
attributes: new TagHelperAttributeList());
var expectedErrorMessage = "Cannot determine an 'href' attribute for <a>. An <a> with a specified " +
"'asp-route' must not have an 'asp-action' or 'asp-controller' attribute.";
// Act & Assert
var ex = await Assert.ThrowsAsync <InvalidOperationException>(
() => anchorTagHelper.ProcessAsync(context: null, output: output));
Assert.Equal(expectedErrorMessage, ex.Message);
}
public async Task TagHelper_LeavesOutputUnchanged_IfForNotBound2()
{
// Arrange
var expectedAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
};
var expectedContent = "original content";
var expectedTagName = "label";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
var metadata = metadataProvider.GetMetadataForProperty(
modelAccessor: () => null,
containerType: typeof(Model),
propertyName: nameof(Model.Text));
var modelExpression = new ModelExpression(nameof(Model.Text), metadata);
var tagHelper = new LabelTagHelper();
var tagHelperContext = new TagHelperContext(allAttributes: new Dictionary <string, object>());
var output = new TagHelperOutput(expectedTagName, expectedAttributes, expectedContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
Model model = null;
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
tagHelper.Generator = htmlGenerator;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, output.Content);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task Process_GeneratesExpectedOutput(
object container,
Type containerType,
object model,
NameAndId nameAndId,
string expectedContent)
{
// Arrange
var expectedAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedTagName = "not-textarea";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, container);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, model);
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelper = new TextAreaTagHelper
{
For = modelExpression,
};
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var htmlAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes)
{
SelfClosing = true,
};
output.Content.SetContent("original content");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
tagHelper.Generator = htmlGenerator;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.True(output.SelfClosing);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_DoesNotUseGenerator_IfSelectedNullOrNoSelectedValues(
string originalContent,
string selected,
string value,
IEnumerable<string> selectedValues,
TagHelperOutput ignored)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
};
var originalTagName = "not-option";
var contextAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
{ "value", value },
};
var originalPreContent = "original pre-content";
var originalPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(originalContent);
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(originalTagName, originalAttributes)
{
TagMode = TagMode.StartTagAndEndTag,
};
output.PreContent.SetContent(originalPreContent);
output.Content.SetContent(originalContent);
output.PostContent.SetContent(originalPostContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
viewContext.FormContext.FormData[SelectTagHelper.SelectedValuesFormDataKey] = selectedValues;
var tagHelper = new OptionTagHelper(htmlGenerator)
{
Value = value,
ViewContext = viewContext,
};
// Act & Assert (does not throw)
// Tag helper would throw an NRE if it used Generator value.
await tagHelper.ProcessAsync(tagHelperContext, output);
}
public async Task ProcessAsyncInTemplate_WithItems_GeneratesExpectedOutput_DoesNotChangeSelectList(
object model,
Type containerType,
Func<object> modelAccessor,
NameAndId nameAndId,
string expectedOptions)
{
// Arrange
var originalAttributes = new Dictionary<string, object>
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new Dictionary<string, object>(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent + expectedOptions;
var expectedTagName = "select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(name: string.Empty, modelExplorer: modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary<string, object>(),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(expectedTagName, originalAttributes)
{
SelfClosing = true
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
viewContext.ViewData.TemplateInfo.HtmlFieldPrefix = nameAndId.Name;
var items = new SelectList(new[] { "", "outer text", "inner text", "other text" });
var savedDisabled = items.Select(item => item.Disabled).ToList();
var savedGroup = items.Select(item => item.Group).ToList();
var savedSelected = items.Select(item => item.Selected).ToList();
var savedText = items.Select(item => item.Text).ToList();
var savedValue = items.Select(item => item.Value).ToList();
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Generator = htmlGenerator,
Items = items,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.True(output.SelfClosing);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
Assert.NotNull(viewContext.FormContext?.FormData);
Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
Assert.Equal(savedDisabled, items.Select(item => item.Disabled));
Assert.Equal(savedGroup, items.Select(item => item.Group));
Assert.Equal(savedSelected, items.Select(item => item.Selected));
Assert.Equal(savedText, items.Select(item => item.Text));
Assert.Equal(savedValue, items.Select(item => item.Value));
}
public async Task Process_GeneratesExpectedOutput(
object container,
Type containerType,
object model,
NameAndId nameAndId,
string expectedContent)
{
// Arrange
var expectedAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedTagName = "not-textarea";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, container);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, model);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelper = new TextAreaTagHelper(htmlGenerator)
{
For = modelExpression,
};
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var htmlAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes)
{
TagMode = TagMode.SelfClosing,
};
output.Content.SetContent("original content");
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, HtmlContentUtilities.HtmlContentToString(output.Content));
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object container,
Type containerType,
object model,
NameAndId nameAndId,
string expectedValue)
{
// Arrange
var expectedAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
{ "type", "text" },
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
{ "value", expectedValue },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = "original post-content";
var expectedTagName = "not-input";
var context = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var originalAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, originalAttributes)
{
TagMode = TagMode.StartTagOnly,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(expectedPostContent);
var htmlGenerator = new TestableHtmlGenerator(new EmptyModelMetadataProvider())
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var tagHelper = GetTagHelper(
htmlGenerator,
container,
containerType,
model,
propertyName: nameof(Model.Text),
expressionName: nameAndId.Name);
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(TagMode.StartTagOnly, output.TagMode);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-span";
var metadataProvider = new TestModelMetadataProvider();
var modelExpression = CreateModelExpression("Name");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var validationMessageTagHelper = new ValidationMessageTagHelper(htmlGenerator)
{
For = modelExpression
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new TagHelperAttributeList
{
{ "id", "myvalidationmessage" },
{ "for", modelExpression },
},
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "id", "myvalidationmessage" }
});
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(expectedPostContent);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
validationMessageTagHelper.ViewContext = viewContext;
// Act
await validationMessageTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(4, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("id"));
Assert.Equal("myvalidationmessage", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("class"));
Assert.Equal("field-validation-valid", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("data-valmsg-for"));
Assert.Equal("Name", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("data-valmsg-replace"));
Assert.Equal("true", attribute.Value);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func<object> modelAccessor,
NameAndId nameAndId,
string ignored)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new TagHelperAttributeList(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent;
var expectedTagName = "not-select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
})
{
TagMode = TagMode.SelfClosing,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var tagHelper = new SelectTagHelper(htmlGenerator)
{
For = modelExpression,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-a";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>
{
{ "id", "myanchor" },
{ "asp-route-foo", "bar" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "asp-fragment", "hello=world" },
{ "asp-host", "contoso.com" },
{ "asp-protocol", "http" }
},
uniqueId: "test",
getChildContentAsync: () => Task.FromResult("Something Else"));
var output = new TagHelperOutput(
expectedTagName,
attributes: new Dictionary <string, string>
{
{ "id", "myanchor" },
{ "asp-route-foo", "bar" },
})
{
Content = "Something"
};
var urlHelper = new Mock <IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(
It.IsAny <string>(),
It.IsAny <string>(),
It.IsAny <object>(),
It.IsAny <string>(),
It.IsAny <string>(),
It.IsAny <string>()))
.Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var anchorTagHelper = new AnchorTagHelper
{
Action = "index",
Controller = "home",
Fragment = "hello=world",
Generator = htmlGenerator,
Host = "contoso.com",
Protocol = "http",
};
// Act
await anchorTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(2, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("id"));
Assert.Equal("myanchor", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("href"));
Assert.Equal("home/index", attribute.Value);
Assert.Equal("Something", output.Content);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_CallsGeneratorWithExpectedValues_ItemsAndAttribute(
IEnumerable <SelectListItem> inputItems,
string attributeName,
string attributeValue,
IEnumerable <SelectListItem> expectedItems)
{
// Arrange
var contextAttributes = new TagHelperAttributeList
{
// Provided for completeness. Select tag helper does not confirm AllAttributes set is consistent.
{ attributeName, attributeValue },
};
var originalAttributes = new TagHelperAttributeList
{
{ attributeName, attributeValue },
};
var propertyName = "Property1";
var expectedTagName = "select";
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var metadataProvider = new EmptyModelMetadataProvider();
string model = null;
var modelExplorer = metadataProvider.GetModelExplorerForType(typeof(string), model);
var htmlGenerator = new Mock <IHtmlGenerator>(MockBehavior.Strict);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator.Object, metadataProvider);
// Simulate a (model => model) scenario. E.g. the calling helper may appear in a low-level template.
var modelExpression = new ModelExpression(string.Empty, modelExplorer);
viewContext.ViewData.TemplateInfo.HtmlFieldPrefix = propertyName;
var currentValues = new string[0];
htmlGenerator
.Setup(real => real.GetCurrentValues(
viewContext,
modelExplorer,
string.Empty, // expression
false)) // allowMultiple
.Returns(currentValues)
.Verifiable();
htmlGenerator
.Setup(real => real.GenerateSelect(
viewContext,
modelExplorer,
null, // optionLabel
string.Empty, // expression
expectedItems,
currentValues,
false, // allowMultiple
null)) // htmlAttributes
.Returns((TagBuilder)null)
.Verifiable();
var tagHelper = new SelectTagHelper(htmlGenerator.Object)
{
For = modelExpression,
Items = inputItems,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
htmlGenerator.Verify();
var keyValuePair = Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
Assert.Same(currentValues, keyValuePair.Value);
}
public async Task ProcessAsyncInTemplate_WithItems_GeneratesExpectedOutput_DoesNotChangeSelectList(
object model,
Type containerType,
Func <object> modelAccessor,
NameAndId nameAndId,
string expectedOptions)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new TagHelperAttributeList(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent + expectedOptions;
var expectedTagName = "select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(name: string.Empty, modelExplorer: modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList <IReadOnlyTagHelperAttribute>(
Enumerable.Empty <IReadOnlyTagHelperAttribute>()),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
})
{
TagMode = TagMode.SelfClosing,
};
output.PreContent.AppendHtml(expectedPreContent);
output.Content.AppendHtml(expectedContent);
output.PostContent.AppendHtml(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
viewContext.ViewData.TemplateInfo.HtmlFieldPrefix = nameAndId.Name;
var items = new SelectList(new[] { "", "outer text", "inner text", "other text" });
var savedDisabled = items.Select(item => item.Disabled).ToList();
var savedGroup = items.Select(item => item.Group).ToList();
var savedSelected = items.Select(item => item.Selected).ToList();
var savedText = items.Select(item => item.Text).ToList();
var savedValue = items.Select(item => item.Value).ToList();
var tagHelper = new SelectTagHelper(htmlGenerator)
{
For = modelExpression,
Items = items,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, HtmlContentUtilities.HtmlContentToString(output.PostContent));
Assert.Equal(expectedTagName, output.TagName);
Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
Assert.Equal(savedDisabled, items.Select(item => item.Disabled));
Assert.Equal(savedGroup, items.Select(item => item.Group));
Assert.Equal(savedSelected, items.Select(item => item.Selected));
Assert.Equal(savedText, items.Select(item => item.Text));
Assert.Equal(savedValue, items.Select(item => item.Value));
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func <object> modelAccessor,
NameAndId nameAndId,
string ignored)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new TagHelperAttributeList(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent;
var expectedTagName = "not-select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList <IReadOnlyTagHelperAttribute>(
Enumerable.Empty <IReadOnlyTagHelperAttribute>()),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
})
{
TagMode = TagMode.SelfClosing,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var tagHelper = new SelectTagHelper(htmlGenerator)
{
For = modelExpression,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
}
public async Task ProcessAsync_ThrowsIfRouteAndActionOrControllerProvided(string propertyName)
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var anchorTagHelper = new AnchorTagHelper(htmlGenerator)
{
Route = "Default",
};
typeof(AnchorTagHelper).GetProperty(propertyName).SetValue(anchorTagHelper, "Home");
var output = new TagHelperOutput(
"a",
attributes: new TagHelperAttributeList());
var expectedErrorMessage = "Cannot determine an 'href' attribute for <a>. An <a> with a specified " +
"'asp-route' must not have an 'asp-action' or 'asp-controller' attribute.";
// Act & Assert
var ex = await Assert.ThrowsAsync<InvalidOperationException>(
() => anchorTagHelper.ProcessAsync(context: null, output: output));
Assert.Equal(expectedErrorMessage, ex.Message);
}
public async Task ProcessAsync_CallsGeneratorWithExpectedValues_ItemsAndMultiple(
IEnumerable <SelectListItem> inputItems,
string multiple,
IEnumerable <SelectListItem> expectedItems,
bool expectedAllowMultiple)
{
// Arrange
var contextAttributes = new Dictionary <string, object>
{
// Attribute will be restored if value matches "multiple".
{ "multiple", multiple },
};
var originalAttributes = new Dictionary <string, string>();
var propertyName = "Property1";
var expectedTagName = "select";
var tagHelperContext = new TagHelperContext(
contextAttributes,
uniqueId: "test",
getChildContentAsync: () => Task.FromResult("Something"));
var output = new TagHelperOutput(expectedTagName, originalAttributes);
var metadataProvider = new EmptyModelMetadataProvider();
string model = null;
var metadata = metadataProvider.GetMetadataForType(() => model, typeof(string));
var htmlGenerator = new Mock <IHtmlGenerator>(MockBehavior.Strict);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator.Object, metadataProvider);
// Simulate a (model => model) scenario. E.g. the calling helper may appear in a low-level template.
var modelExpression = new ModelExpression(string.Empty, metadata);
viewContext.ViewData.TemplateInfo.HtmlFieldPrefix = propertyName;
ICollection <string> selectedValues = new string[0];
htmlGenerator
.Setup(real => real.GenerateSelect(
viewContext,
metadata,
null, // optionLabel
string.Empty, // name
expectedItems,
expectedAllowMultiple,
null, // htmlAttributes
out selectedValues))
.Returns((TagBuilder)null)
.Verifiable();
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Items = inputItems,
Generator = htmlGenerator.Object,
Multiple = multiple,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
htmlGenerator.Verify();
Assert.NotNull(viewContext.FormContext?.FormData);
var keyValuePair = Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
Assert.Same(selectedValues, keyValuePair.Value);
}
public async Task ProcessAsync_WithItems_GeneratesExpectedOutput_DoesNotChangeSelectList(
object model,
Type containerType,
Func<object> modelAccessor,
NameAndId nameAndId,
string expectedOptions)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new TagHelperAttributeList(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent + expectedOptions;
var expectedTagName = "select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
})
{
TagMode = TagMode.SelfClosing,
};
output.PreContent.AppendHtml(expectedPreContent);
output.Content.AppendHtml(expectedContent);
output.PostContent.AppendHtml(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var items = new SelectList(new[] { "", "outer text", "inner text", "other text" });
var savedDisabled = items.Select(item => item.Disabled).ToList();
var savedGroup = items.Select(item => item.Group).ToList();
var savedSelected = items.Select(item => item.Selected).ToList();
var savedText = items.Select(item => item.Text).ToList();
var savedValue = items.Select(item => item.Value).ToList();
var tagHelper = new SelectTagHelper(htmlGenerator)
{
For = modelExpression,
Items = items,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, HtmlContentUtilities.HtmlContentToString(output.PostContent));
Assert.Equal(expectedTagName, output.TagName);
Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
Assert.Equal(savedDisabled, items.Select(item => item.Disabled));
Assert.Equal(savedGroup, items.Select(item => item.Group));
Assert.Equal(savedSelected, items.Select(item => item.Selected));
Assert.Equal(savedText, items.Select(item => item.Text));
Assert.Equal(savedValue, items.Select(item => item.Value));
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func <object> modelAccessor,
string propertyPath,
TagHelperOutputContent tagHelperOutputContent)
{
// Arrange
var expectedTagName = "not-label";
var expectedAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
{ "for", tagHelperOutputContent.ExpectedId }
};
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(propertyPath, modelExplorer);
var tagHelper = new LabelTagHelper
{
For = modelExpression,
};
var expectedPreContent = "original pre-content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(tagHelperOutputContent.OriginalChildContent);
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var htmlAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes);
output.PreContent.SetContent(expectedPreContent);
output.PostContent.SetContent(expectedPostContent);
// LabelTagHelper checks IsContentModified so we don't want to forcibly set it if
// tagHelperOutputContent.OriginalContent is going to be null or empty.
if (!string.IsNullOrEmpty(tagHelperOutputContent.OriginalContent))
{
output.Content.SetContent(tagHelperOutputContent.OriginalContent);
}
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
tagHelper.Generator = htmlGenerator;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(tagHelperOutputContent.ExpectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.False(output.SelfClosing);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task TagHelper_CallsGeneratorWithExpectedValues_RealModelType(
Type modelType,
object model,
bool allowMultiple)
{
// Arrange
var contextAttributes = new ReadOnlyTagHelperAttributeList <IReadOnlyTagHelperAttribute>(
Enumerable.Empty <IReadOnlyTagHelperAttribute>());
var originalAttributes = new TagHelperAttributeList();
var propertyName = "Property1";
var tagName = "select";
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
tagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var metadataProvider = new EmptyModelMetadataProvider();
var modelExplorer = metadataProvider.GetModelExplorerForType(modelType, model);
var modelExpression = new ModelExpression(propertyName, modelExplorer);
var htmlGenerator = new Mock <IHtmlGenerator>(MockBehavior.Strict);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator.Object, metadataProvider);
var currentValues = new string[0];
htmlGenerator
.Setup(real => real.GetCurrentValues(
viewContext,
modelExplorer,
propertyName, // expression
allowMultiple))
.Returns(currentValues)
.Verifiable();
htmlGenerator
.Setup(real => real.GenerateSelect(
viewContext,
modelExplorer,
null, // optionLabel
propertyName, // expression
It.IsAny <IEnumerable <SelectListItem> >(),
currentValues,
allowMultiple,
null)) // htmlAttributes
.Returns((TagBuilder)null)
.Verifiable();
var tagHelper = new SelectTagHelper(htmlGenerator.Object)
{
For = modelExpression,
ViewContext = viewContext,
};
// Act
tagHelper.Init(tagHelperContext);
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
htmlGenerator.Verify();
var keyValuePair = Assert.Single(
tagHelperContext.Items,
entry => (Type)entry.Key == typeof(SelectTagHelper));
Assert.Same(currentValues, keyValuePair.Value);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func <object> modelAccessor,
string propertyPath,
TagHelperOutputContent tagHelperOutputContent)
{
// Arrange
var expectedTagName = "not-label";
var expectedAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
{ "for", tagHelperOutputContent.ExpectedId }
};
var metadataProvider = new DataAnnotationsModelMetadataProvider();
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var metadata = metadataProvider.GetMetadataForProperty(modelAccessor, containerType, propertyName: "Text");
var modelExpression = new ModelExpression(propertyPath, metadata);
var tagHelper = new LabelTagHelper
{
For = modelExpression,
};
var expectedPreContent = "original pre-content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
uniqueId: "test",
getChildContentAsync: () => Task.FromResult(tagHelperOutputContent.OriginalChildContent));
var htmlAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes)
{
PreContent = expectedPreContent,
PostContent = expectedPostContent,
};
// LabelTagHelper checks ContentSet so we don't want to forcibly set it if
// tagHelperOutputContent.OriginalContent is going to be null or empty.
if (!string.IsNullOrEmpty(tagHelperOutputContent.OriginalContent))
{
output.Content = tagHelperOutputContent.OriginalContent;
}
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
tagHelper.Generator = htmlGenerator;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent);
Assert.Equal(tagHelperOutputContent.ExpectedContent, output.Content);
Assert.Equal(expectedPostContent, output.PostContent);
Assert.False(output.SelfClosing);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
string originalContent,
string selected,
string value,
IEnumerable<string> selectedValues,
TagHelperOutput expectedTagHelperOutput)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
};
if (selected != null)
{
originalAttributes.Add("selected", selected);
}
var contextAttributes = new TagHelperAttributeList(originalAttributes);
if (value != null)
{
contextAttributes.Add("value", value);
}
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
// GetChildContentAsync should not be invoked since we are setting the content below.
Assert.True(false);
return Task.FromResult<TagHelperContent>(null);
});
var output = new TagHelperOutput(expectedTagHelperOutput.TagName, originalAttributes)
{
SelfClosing = false,
};
output.Content.SetContent(originalContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
viewContext.FormContext.FormData[SelectTagHelper.SelectedValuesFormDataKey] = selectedValues;
var tagHelper = new OptionTagHelper(htmlGenerator)
{
Value = value,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedTagHelperOutput.TagName, output.TagName);
Assert.Equal(expectedTagHelperOutput.Content.GetContent(), output.Content.GetContent());
Assert.Equal(expectedTagHelperOutput.Attributes.Count, output.Attributes.Count);
foreach (var attribute in output.Attributes)
{
Assert.Contains(attribute, expectedTagHelperOutput.Attributes);
}
}
public async Task ProcessAsync_GeneratesExpectedOutput_WithItems(
object model,
Type containerType,
Func <object> modelAccessor,
NameAndId nameAndId,
string expectedOptions)
{
// Arrange
var originalAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
};
var originalContent = "original content";
var expectedAttributes = new Dictionary <string, string>(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedContent = originalContent + expectedOptions;
var expectedTagName = "select";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var metadata = metadataProvider.GetMetadataForProperty(modelAccessor, containerType, propertyName: "Text");
var modelExpression = new ModelExpression(nameAndId.Name, metadata);
var tagHelperContext = new TagHelperContext(new Dictionary <string, object>());
var output = new TagHelperOutput(expectedTagName, originalAttributes, originalContent)
{
SelfClosing = true,
};
var items = new SelectList(new[] { "", "outer text", "inner text", "other text" });
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Generator = htmlGenerator,
Items = items,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, output.Content);
Assert.False(output.SelfClosing);
Assert.Equal(expectedTagName, output.TagName);
Assert.NotNull(viewContext.FormContext?.FormData);
var keyValuePair = Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
Assert.NotNull(keyValuePair.Value);
var selectedValues = Assert.IsAssignableFrom <ICollection <string> >(keyValuePair.Value);
Assert.InRange(selectedValues.Count, 0, 1);
}
public void ValidationSummaryProperty_ThrowsWhenSetToInvalidValidationSummaryValue(
ValidationSummary validationSummary)
{
// Arrange
var generator = new TestableHtmlGenerator(new EmptyModelMetadataProvider());
var validationSummaryTagHelper = new ValidationSummaryTagHelper(generator);
var expectedMessage = string.Format(
@"The value of argument 'value' ({0}) is invalid for Enum type 'Microsoft.AspNet.Mvc.ValidationSummary'.
Parameter name: value",
validationSummary);
// Act & Assert
var ex = Assert.Throws<ArgumentException>(
"value",
() => { validationSummaryTagHelper.ValidationSummary = validationSummary; });
Assert.Equal(expectedMessage, ex.Message);
}
public async Task ProcessAsync_CallsGeneratorWithExpectedValues_ItemsAndMultiple(
IEnumerable <SelectListItem> inputItems,
string multiple,
IEnumerable <SelectListItem> expectedItems,
bool expectedAllowMultiple)
{
// Arrange
var contextAttributes = new Dictionary <string, object>
{
// Attribute will be restored if value matches "multiple".
{ "multiple", multiple },
};
var originalAttributes = new Dictionary <string, string>();
var content = "original content";
var propertyName = "Property1";
var expectedTagName = "select";
var tagHelperContext = new TagHelperContext(contextAttributes);
var output = new TagHelperOutput(expectedTagName, originalAttributes, content);
// TODO: https://github.com/aspnet/Mvc/issues/1253
// In real (model => model) scenario, ModelExpression should have name "" and
// TemplateInfo.HtmlFieldPrefix should be "Property1" but empty ModelExpression name is not currently
// supported, see also #1408.
var metadataProvider = new EmptyModelMetadataProvider();
string model = null;
var metadata = metadataProvider.GetMetadataForType(() => model, typeof(string));
var modelExpression = new ModelExpression(propertyName, metadata);
var htmlGenerator = new Mock <IHtmlGenerator>(MockBehavior.Strict);
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator.Object, metadataProvider);
ICollection <string> selectedValues = new string[0];
htmlGenerator
.Setup(real => real.GenerateSelect(
viewContext,
metadata,
null, // optionLabel
propertyName, // name
expectedItems,
expectedAllowMultiple,
null, // htmlAttributes
out selectedValues))
.Returns((TagBuilder)null)
.Verifiable();
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Items = inputItems,
Generator = htmlGenerator.Object,
Multiple = multiple,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
htmlGenerator.Verify();
Assert.NotNull(viewContext.FormContext?.FormData);
var keyValuePair = Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
Assert.Same(selectedValues, keyValuePair.Value);
}
public async Task ProcessAsync_DoesNotUseGenerator_IfSelectedNullOrNoSelectedValues(
string originalContent,
string selected,
string value,
IEnumerable <string> selectedValues,
TagHelperOutput ignored)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
};
var originalTagName = "not-option";
var contextAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
{ "value", value },
};
var originalPreContent = "original pre-content";
var originalPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
originalTagName,
originalAttributes,
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(originalContent);
return(Task.FromResult <TagHelperContent>(tagHelperContent));
})
{
TagMode = TagMode.StartTagAndEndTag,
};
output.PreContent.SetContent(originalPreContent);
output.Content.SetContent(originalContent);
output.PostContent.SetContent(originalPostContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
tagHelperContext.Items[typeof(SelectTagHelper)] = selectedValues;
var tagHelper = new OptionTagHelper(htmlGenerator)
{
Value = value,
ViewContext = viewContext,
};
// Act & Assert (does not throw)
// Tag helper would throw an NRE if it used Generator value.
await tagHelper.ProcessAsync(tagHelperContext, output);
}
public async Task Process_GeneratesExpectedOutput(
object model,
Type containerType,
Func <object> modelAccessor,
NameAndId nameAndId,
string expectedContent)
{
// Arrange
var expectedAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedTagName = "not-textarea";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var metadata = metadataProvider.GetMetadataForProperty(modelAccessor, containerType, propertyName: "Text");
var modelExpression = new ModelExpression(nameAndId.Name, metadata);
var tagHelper = new TextAreaTagHelper
{
For = modelExpression,
};
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
uniqueId: "test",
getChildContentAsync: () => Task.FromResult("Something"));
var htmlAttributes = new Dictionary <string, string>
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes)
{
Content = "original content",
SelfClosing = true,
};
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
tagHelper.Generator = htmlGenerator;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, output.Content);
Assert.False(output.SelfClosing);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task CheckBoxHandlesMultipleAttributesSameNameCorrectly(
TagHelperAttributeList outputAttributes,
string expectedAttributeString)
{
// Arrange
var originalContent = "original content";
var originalTagName = "not-input";
var expectedContent = $"{originalContent}<input {expectedAttributeString} id=\"HtmlEncode[[IsACar]]\" " +
"name=\"HtmlEncode[[IsACar]]\" type=\"HtmlEncode[[checkbox]]\" value=\"HtmlEncode[[true]]\" />" +
"<input name=\"HtmlEncode[[IsACar]]\" type=\"HtmlEncode[[hidden]]\" value=\"HtmlEncode[[false]]\" />";
var context = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult => Task.FromResult<TagHelperContent>(result: null));
var output = new TagHelperOutput(originalTagName, outputAttributes)
{
TagMode = TagMode.SelfClosing,
};
output.Content.SetContent(originalContent);
var htmlGenerator = new TestableHtmlGenerator(new EmptyModelMetadataProvider());
var tagHelper = GetTagHelper(htmlGenerator, model: false, propertyName: nameof(Model.IsACar));
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Empty(output.Attributes); // Moved to Content and cleared
Assert.Equal(expectedContent, HtmlContentUtilities.HtmlContentToString(output.Content));
Assert.Equal(TagMode.SelfClosing, output.TagMode);
Assert.Null(output.TagName); // Cleared
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func<object> modelAccessor,
string propertyPath,
TagHelperOutputContent tagHelperOutputContent)
{
// Arrange
var expectedTagName = "not-label";
var expectedAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
{ "for", tagHelperOutputContent.ExpectedId }
};
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var modelExpression = new ModelExpression(propertyPath, modelExplorer);
var tagHelper = new LabelTagHelper(htmlGenerator)
{
For = modelExpression,
};
var expectedPreContent = "original pre-content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(tagHelperOutputContent.OriginalChildContent);
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var htmlAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, htmlAttributes);
output.PreContent.SetContent(expectedPreContent);
output.PostContent.SetContent(expectedPostContent);
// LabelTagHelper checks IsContentModified so we don't want to forcibly set it if
// tagHelperOutputContent.OriginalContent is going to be null or empty.
if (!string.IsNullOrEmpty(tagHelperOutputContent.OriginalContent))
{
output.Content.SetContent(tagHelperOutputContent.OriginalContent);
}
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
tagHelper.ViewContext = viewContext;
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(
tagHelperOutputContent.ExpectedContent,
HtmlContentUtilities.HtmlContentToString(output.Content));
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(TagMode.StartTagAndEndTag, output.TagMode);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object model,
Type containerType,
Func<object> modelAccessor,
NameAndId nameAndId,
string ignored)
{
// Arrange
var originalAttributes = new Dictionary<string, object>
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new Dictionary<string, object>(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent;
var expectedTagName = "not-select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary<string, object>(),
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(expectedTagName, originalAttributes)
{
SelfClosing = true,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Generator = htmlGenerator,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.True(output.SelfClosing);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
Assert.NotNull(viewContext.FormContext?.FormData);
Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-form";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>
{
{ "id", "myform" },
{ "asp-route-foo", "bar" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "method", "post" },
{ "asp-anti-forgery", true }
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new Dictionary <string, string>
{
{ "id", "myform" },
{ "asp-route-foo", "bar" },
},
content: "Something");
var urlHelper = new Mock <IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(It.IsAny <string>(),
It.IsAny <string>(),
It.IsAny <object>(),
It.IsAny <string>(),
It.IsAny <string>(),
It.IsAny <string>()))
.Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var expectedContent = "Something" + htmlGenerator.GenerateAntiForgery(viewContext)
.ToString(TagRenderMode.SelfClosing);
var formTagHelper = new FormTagHelper
{
Action = "index",
AntiForgery = true,
Controller = "home",
Generator = htmlGenerator,
Method = "post",
ViewContext = viewContext,
};
// Act
await formTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(3, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("id"));
Assert.Equal("myform", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("method"));
Assert.Equal("post", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("action"));
Assert.Equal("home/index", attribute.Value);
Assert.Equal(expectedContent, output.Content);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-form";
var metadataProvider = new TestModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new TagHelperAttributeList
{
{ "id", "myform" },
{ "asp-route-name", "value" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "method", "post" },
{ "asp-antiforgery", true }
},
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "id", "myform" },
},
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something Else");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
output.PostContent.SetContent("Something");
var urlHelper = new Mock <IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(It.IsAny <UrlActionContext>())).Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var expectedPostContent = "Something" +
HtmlContentUtilities.HtmlContentToString(
htmlGenerator.GenerateAntiforgery(viewContext),
new NullTestEncoder());
var formTagHelper = new FormTagHelper(htmlGenerator)
{
Action = "index",
Antiforgery = true,
Controller = "home",
ViewContext = viewContext,
RouteValues =
{
{ "name", "value" },
},
};
// Act
await formTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(3, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("id"));
Assert.Equal("myform", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("method"));
Assert.Equal("post", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("action"));
Assert.Equal("home/index", attribute.Value);
Assert.Empty(output.PreContent.GetContent());
Assert.True(output.Content.IsEmpty);
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
string originalContent,
string selected,
string value,
IEnumerable <string> selectedValues,
TagHelperOutput expectedTagHelperOutput)
{
// Arrange
var originalAttributes = new Dictionary <string, object>
{
{ "label", "my-label" },
};
if (selected != null)
{
originalAttributes.Add("selected", selected);
}
var contextAttributes = new Dictionary <string, object>(originalAttributes);
if (value != null)
{
contextAttributes.Add("value", value);
}
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(originalContent);
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var output = new TagHelperOutput(expectedTagHelperOutput.TagName, originalAttributes)
{
SelfClosing = false,
};
output.Content.SetContent(originalContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
viewContext.FormContext.FormData[SelectTagHelper.SelectedValuesFormDataKey] = selectedValues;
var tagHelper = new OptionTagHelper
{
Generator = htmlGenerator,
Value = value,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedTagHelperOutput.TagName, output.TagName);
Assert.Equal(expectedTagHelperOutput.Content.GetContent(), output.Content.GetContent());
Assert.Equal(expectedTagHelperOutput.Attributes.Count, output.Attributes.Count);
foreach (var attribute in output.Attributes)
{
Assert.Contains(attribute, expectedTagHelperOutput.Attributes);
}
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-span";
var metadataProvider = new TestModelMetadataProvider();
var modelExpression = CreateModelExpression("Name");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var validationMessageTagHelper = new ValidationMessageTagHelper(htmlGenerator)
{
For = modelExpression
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new TagHelperAttributeList
{
{ "id", "myvalidationmessage" },
{ "for", modelExpression },
},
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "id", "myvalidationmessage" }
});
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(expectedPostContent);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
validationMessageTagHelper.ViewContext = viewContext;
// Act
await validationMessageTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(4, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("id"));
Assert.Equal("myvalidationmessage", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("class"));
Assert.Equal("field-validation-valid", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("data-valmsg-for"));
Assert.Equal("Name", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("data-valmsg-replace"));
Assert.Equal("true", attribute.Value);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-a";
var metadataProvider = new TestModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new TagHelperAttributeList
{
{ "id", "myanchor" },
{ "asp-route-name", "value" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "asp-fragment", "hello=world" },
{ "asp-host", "contoso.com" },
{ "asp-protocol", "http" }
},
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something Else");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "id", "myanchor" },
});
output.Content.SetContent("Something");
var urlHelper = new Mock <IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(It.IsAny <UrlActionContext>())).Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var anchorTagHelper = new AnchorTagHelper(htmlGenerator)
{
Action = "index",
Controller = "home",
Fragment = "hello=world",
Host = "contoso.com",
Protocol = "http",
RouteValues =
{
{ "name", "value" },
},
};
// Act
await anchorTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(2, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("id"));
Assert.Equal("myanchor", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("href"));
Assert.Equal("home/index", attribute.Value);
Assert.Equal("Something", output.Content.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-form";
var metadataProvider = new TestModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new TagHelperAttributeList
{
{ "id", "myform" },
{ "asp-route-name", "value" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "method", "post" },
{ "asp-antiforgery", true }
},
items: new Dictionary<object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
expectedTagName,
attributes: new TagHelperAttributeList
{
{ "id", "myform" },
},
getChildContentAsync: useCachedResult =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something Else");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
output.PostContent.SetContent("Something");
var urlHelper = new Mock<IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(It.IsAny<UrlActionContext>())).Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var expectedPostContent = "Something" +
HtmlContentUtilities.HtmlContentToString(
htmlGenerator.GenerateAntiforgery(viewContext),
HtmlEncoder.Default);
var formTagHelper = new FormTagHelper(htmlGenerator)
{
Action = "index",
Antiforgery = true,
Controller = "home",
ViewContext = viewContext,
RouteValues =
{
{ "name", "value" },
},
};
// Act
await formTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(3, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("id"));
Assert.Equal("myform", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("method"));
Assert.Equal("post", attribute.Value);
attribute = Assert.Single(output.Attributes, attr => attr.Name.Equals("action"));
Assert.Equal("home/index", attribute.Value);
Assert.Empty(output.PreContent.GetContent());
Assert.True(output.Content.IsEmpty);
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_ThrowsIfHrefConflictsWithBoundAttributes(string propertyName)
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var anchorTagHelper = new AnchorTagHelper(htmlGenerator);
var output = new TagHelperOutput(
"a",
attributes: new TagHelperAttributeList
{
{ "href", "http://www.contoso.com" }
},
getChildContentAsync: _ => Task.FromResult<TagHelperContent>(null));
if (propertyName == "asp-route-")
{
anchorTagHelper.RouteValues.Add("name", "value");
}
else
{
typeof(AnchorTagHelper).GetProperty(propertyName).SetValue(anchorTagHelper, "Home");
}
var expectedErrorMessage = "Cannot override the 'href' attribute for <a>. An <a> with a specified " +
"'href' must not have attributes starting with 'asp-route-' or an " +
"'asp-action', 'asp-controller', 'asp-route', 'asp-protocol', 'asp-host', or " +
"'asp-fragment' attribute.";
var context = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test");
// Act & Assert
var ex = await Assert.ThrowsAsync<InvalidOperationException>(
() => anchorTagHelper.ProcessAsync(context, output));
Assert.Equal(expectedErrorMessage, ex.Message);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
object container,
Type containerType,
object model,
NameAndId nameAndId,
string expectedValue)
{
// Arrange
var expectedAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
{ "type", "text" },
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
{ "value", expectedValue },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = "original post-content";
var expectedTagName = "not-input";
var context = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var originalAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(expectedTagName, originalAttributes)
{
SelfClosing = false,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(expectedPostContent);
var htmlGenerator = new TestableHtmlGenerator(new EmptyModelMetadataProvider())
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
// Property name is either nameof(Model.Text) or nameof(NestedModel.Text).
var tagHelper = GetTagHelper(
htmlGenerator,
container,
containerType,
model,
propertyName: nameof(Model.Text),
expressionName: nameAndId.Name);
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.False(output.SelfClosing);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_ThrowsIfRouteAndActionOrControllerProvided(string propertyName)
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var anchorTagHelper = new AnchorTagHelper(htmlGenerator)
{
Route = "Default",
};
typeof(AnchorTagHelper).GetProperty(propertyName).SetValue(anchorTagHelper, "Home");
var output = new TagHelperOutput(
"a",
attributes: new TagHelperAttributeList(),
getChildContentAsync: _ => Task.FromResult<TagHelperContent>(null));
var expectedErrorMessage = "Cannot determine an 'href' attribute for <a>. An <a> with a specified " +
"'asp-route' must not have an 'asp-action' or 'asp-controller' attribute.";
var context = new TagHelperContext(
allAttributes: new ReadOnlyTagHelperAttributeList<IReadOnlyTagHelperAttribute>(
Enumerable.Empty<IReadOnlyTagHelperAttribute>()),
items: new Dictionary<object, object>(),
uniqueId: "test");
// Act & Assert
var ex = await Assert.ThrowsAsync<InvalidOperationException>(
() => anchorTagHelper.ProcessAsync(context, output));
Assert.Equal(expectedErrorMessage, ex.Message);
}
public void ValidationSummaryProperty_ThrowsWhenSetToInvalidValidationSummaryValue(
ValidationSummary validationSummary)
{
// Arrange
var generator = new TestableHtmlGenerator(new EmptyModelMetadataProvider());
var validationSummaryTagHelper = new ValidationSummaryTagHelper(generator);
var validationTypeName = typeof(ValidationSummary).FullName;
var expectedMessage =
$@"The value of argument 'value' ({validationSummary}) is invalid for Enum type '{validationTypeName}'.
Parameter name: value";
// Act & Assert
var ex = Assert.Throws<ArgumentException>(
"value",
() => { validationSummaryTagHelper.ValidationSummary = validationSummary; });
Assert.Equal(expectedMessage, ex.Message);
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-span";
var metadataProvider = new DataAnnotationsModelMetadataProvider();
var modelExpression = CreateModelExpression("Name");
var validationMessageTagHelper = new ValidationMessageTagHelper
{
For = modelExpression
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>
{
{ "id", "myvalidationmessage" },
{ "for", modelExpression },
},
uniqueId: "test",
getChildContentAsync: () => Task.FromResult("Something"));
var output = new TagHelperOutput(
expectedTagName,
attributes: new Dictionary <string, string>
{
{ "id", "myvalidationmessage" }
})
{
PreContent = expectedPreContent,
Content = expectedContent,
PostContent = expectedPostContent,
};
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
validationMessageTagHelper.ViewContext = viewContext;
validationMessageTagHelper.Generator = htmlGenerator;
// Act
await validationMessageTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(4, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("id"));
Assert.Equal("myvalidationmessage", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("class"));
Assert.Equal("field-validation-valid", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("data-valmsg-for"));
Assert.Equal("Name", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("data-valmsg-replace"));
Assert.Equal("true", attribute.Value);
Assert.Equal(expectedPreContent, output.PreContent);
Assert.Equal(expectedContent, output.Content);
Assert.Equal(expectedPostContent, output.PostContent);
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_GeneratesExpectedOutput(
string originalContent,
string selected,
string value,
IEnumerable <string> selectedValues,
TagHelperOutput expectedTagHelperOutput)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
};
if (selected != null)
{
originalAttributes.Add("selected", selected);
}
var contextAttributes = new TagHelperAttributeList(originalAttributes);
if (value != null)
{
contextAttributes.Add("value", value);
}
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: useCachedResult =>
{
// GetChildContentAsync should not be invoked since we are setting the content below.
Assert.True(false);
return(Task.FromResult <TagHelperContent>(null));
});
var output = new TagHelperOutput(expectedTagHelperOutput.TagName, originalAttributes)
{
TagMode = TagMode.StartTagAndEndTag
};
output.Content.SetContent(originalContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
viewContext.FormContext.FormData[SelectTagHelper.SelectedValuesFormDataKey] = selectedValues;
var tagHelper = new OptionTagHelper(htmlGenerator)
{
Value = value,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedTagHelperOutput.TagName, output.TagName);
Assert.Equal(expectedTagHelperOutput.Content.GetContent(), output.Content.GetContent());
Assert.Equal(expectedTagHelperOutput.Attributes.Count, output.Attributes.Count);
foreach (var attribute in output.Attributes)
{
Assert.Contains(attribute, expectedTagHelperOutput.Attributes);
}
}
public async Task ProcessAsync_GeneratesExpectedOutput()
{
// Arrange
var expectedTagName = "not-a";
var metadataProvider = new TestModelMetadataProvider();
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary<string, object>
{
{ "id", "myanchor" },
{ "asp-route-foo", "bar" },
{ "asp-action", "index" },
{ "asp-controller", "home" },
{ "asp-fragment", "hello=world" },
{ "asp-host", "contoso.com" },
{ "asp-protocol", "http" }
},
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something Else");
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(
expectedTagName,
attributes: new Dictionary<string, object>
{
{ "id", "myanchor" },
{ "asp-route-foo", "bar" },
});
output.Content.SetContent("Something");
var urlHelper = new Mock<IUrlHelper>();
urlHelper
.Setup(mock => mock.Action(It.IsAny<UrlActionContext>())).Returns("home/index");
var htmlGenerator = new TestableHtmlGenerator(metadataProvider, urlHelper.Object);
var viewContext = TestableHtmlGenerator.GetViewContext(model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var anchorTagHelper = new AnchorTagHelper
{
Action = "index",
Controller = "home",
Fragment = "hello=world",
Generator = htmlGenerator,
Host = "contoso.com",
Protocol = "http",
};
// Act
await anchorTagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(2, output.Attributes.Count);
var attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("id"));
Assert.Equal("myanchor", attribute.Value);
attribute = Assert.Single(output.Attributes, kvp => kvp.Key.Equals("href"));
Assert.Equal("home/index", attribute.Value);
Assert.Equal("Something", output.Content.GetContent());
Assert.Equal(expectedTagName, output.TagName);
}
public async Task ProcessAsync_DoesNotUseViewContext_IfSelectedNotNull(
string originalContent,
string selected,
string value,
IEnumerable<string> ignoredValues,
TagHelperOutput ignoredOutput)
{
// Arrange
var originalAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
};
var originalTagName = "not-option";
var contextAttributes = new TagHelperAttributeList
{
{ "label", "my-label" },
{ "selected", selected },
{ "value", value },
};
var originalPreContent = "original pre-content";
var originalPostContent = "original post-content";
var tagHelperContext = new TagHelperContext(
contextAttributes,
items: new Dictionary<object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent(originalContent);
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
var output = new TagHelperOutput(originalTagName, originalAttributes)
{
SelfClosing = false,
};
output.PreContent.SetContent(originalPreContent);
output.Content.SetContent(originalContent);
output.PostContent.SetContent(originalPostContent);
var metadataProvider = new EmptyModelMetadataProvider();
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var tagHelper = new OptionTagHelper(htmlGenerator)
{
Value = value,
};
// Act & Assert (does not throw)
// Tag helper would throw an NRE if it used ViewContext or Generator values.
await tagHelper.ProcessAsync(tagHelperContext, output);
}
public async Task ProcessAsync_WithItems_GeneratesExpectedOutput_DoesNotChangeSelectList(
object model,
Type containerType,
Func <object> modelAccessor,
NameAndId nameAndId,
string expectedOptions)
{
// Arrange
var originalAttributes = new Dictionary <string, object>
{
{ "class", "form-control" },
};
var originalPostContent = "original content";
var expectedAttributes = new Dictionary <string, object>(originalAttributes)
{
{ "id", nameAndId.Id },
{ "name", nameAndId.Name },
{ "valid", "from validation attributes" },
};
var expectedPreContent = "original pre-content";
var expectedContent = "original content";
var expectedPostContent = originalPostContent + expectedOptions;
var expectedTagName = "select";
var metadataProvider = new TestModelMetadataProvider();
var containerMetadata = metadataProvider.GetMetadataForType(containerType);
var containerExplorer = metadataProvider.GetModelExplorerForType(containerType, model);
var propertyMetadata = metadataProvider.GetMetadataForProperty(containerType, "Text");
var modelExplorer = containerExplorer.GetExplorerForExpression(propertyMetadata, modelAccessor());
var modelExpression = new ModelExpression(nameAndId.Name, modelExplorer);
var tagHelperContext = new TagHelperContext(
allAttributes: new Dictionary <string, object>(),
items: new Dictionary <object, object>(),
uniqueId: "test",
getChildContentAsync: () =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Something");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var output = new TagHelperOutput(expectedTagName, originalAttributes)
{
SelfClosing = true,
};
output.PreContent.SetContent(expectedPreContent);
output.Content.SetContent(expectedContent);
output.PostContent.SetContent(originalPostContent);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider)
{
ValidationAttributes =
{
{ "valid", "from validation attributes" },
}
};
var viewContext = TestableHtmlGenerator.GetViewContext(model, htmlGenerator, metadataProvider);
var items = new SelectList(new[] { "", "outer text", "inner text", "other text" });
var savedDisabled = items.Select(item => item.Disabled).ToList();
var savedGroup = items.Select(item => item.Group).ToList();
var savedSelected = items.Select(item => item.Selected).ToList();
var savedText = items.Select(item => item.Text).ToList();
var savedValue = items.Select(item => item.Value).ToList();
var tagHelper = new SelectTagHelper
{
For = modelExpression,
Generator = htmlGenerator,
Items = items,
ViewContext = viewContext,
};
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.True(output.SelfClosing);
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedPreContent, output.PreContent.GetContent());
Assert.Equal(expectedContent, output.Content.GetContent());
Assert.Equal(expectedPostContent, output.PostContent.GetContent());
Assert.Equal(expectedTagName, output.TagName);
Assert.NotNull(viewContext.FormContext?.FormData);
Assert.Single(
viewContext.FormContext.FormData,
entry => entry.Key == SelectTagHelper.SelectedValuesFormDataKey);
Assert.Equal(savedDisabled, items.Select(item => item.Disabled));
Assert.Equal(savedGroup, items.Select(item => item.Group));
Assert.Equal(savedSelected, items.Select(item => item.Selected));
Assert.Equal(savedText, items.Select(item => item.Text));
Assert.Equal(savedValue, items.Select(item => item.Value));
}
