public async Task ProcessAsync_GeneratesExpectedOutput_WithDisplayName(
string displayName,
string originalChildContent,
string htmlFieldPrefix,
string expectedContent,
string expectedId)
{
// Arrange
var expectedAttributes = new TagHelperAttributeList
{
{ "for", expectedId }
};
var name = nameof(NestedModel.Text);
var metadataProvider = new TestModelMetadataProvider();
metadataProvider
.ForProperty <NestedModel>(name)
.DisplayDetails(metadata => metadata.DisplayName = () => displayName);
var htmlGenerator = new TestableHtmlGenerator(metadataProvider);
var viewContext = TestableHtmlGenerator.GetViewContext(
model: null,
htmlGenerator: htmlGenerator,
metadataProvider: metadataProvider);
var viewData = new ViewDataDictionary <NestedModel>(metadataProvider, viewContext.ModelState);
viewData.TemplateInfo.HtmlFieldPrefix = htmlFieldPrefix;
viewContext.ViewData = viewData;
var containerExplorer = metadataProvider.GetModelExplorerForType(typeof(NestedModel), model: null);
var modelExplorer = containerExplorer.GetExplorerForProperty(name);
var modelExpression = new ModelExpression(name, modelExplorer);
var tagHelper = new LabelTagHelper(htmlGenerator)
{
For = modelExpression,
ViewContext = viewContext,
};
var tagHelperContext = new TagHelperContext(
tagName: "label",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
"label",
new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml(originalChildContent);
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
// Act
await tagHelper.ProcessAsync(tagHelperContext, output);
// Assert
Assert.Equal(expectedAttributes, output.Attributes);
Assert.Equal(expectedContent, HtmlContentUtilities.HtmlContentToString(output.Content));
}
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(
tagName: "not-label",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var htmlAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(
expectedTagName,
htmlAttributes,
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml(tagHelperOutputContent.OriginalChildContent);
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
output.PreContent.AppendHtml(expectedPreContent);
output.PostContent.AppendHtml(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.AppendHtml(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,
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 TagHelperAttributeList(),
items: new Dictionary<object, object>(),
uniqueId: "test");
var htmlAttributes = new TagHelperAttributeList
{
{ "class", "form-control" },
};
var output = new TagHelperOutput(
expectedTagName,
htmlAttributes,
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.AppendHtml(tagHelperOutputContent.OriginalChildContent);
return Task.FromResult<TagHelperContent>(tagHelperContent);
});
output.PreContent.AppendHtml(expectedPreContent);
output.PostContent.AppendHtml(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.AppendHtml(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);
}
