public async Task TryUpdateModel_ReturnsFalse_IfBinderReturnsNull()
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var binder = new Mock<IModelBinder>();
binder.Setup(b => b.BindModelAsync(It.IsAny<ModelBindingContext>()))
.Returns(Task.FromResult<ModelBindingResult>(null));
var model = new MyModel();
// Act
var result = await ModelBindingHelper.TryUpdateModelAsync(
model,
null,
Mock.Of<HttpContext>(),
new ModelStateDictionary(),
metadataProvider,
GetCompositeBinder(binder.Object),
Mock.Of<IValueProvider>(),
new List<IInputFormatter>(),
new DefaultObjectValidator(new IExcludeTypeValidationFilter[0], metadataProvider),
Mock.Of<IModelValidatorProvider>());
// Assert
Assert.False(result);
Assert.Null(model.MyProperty);
}
public async Task JsonPatchInputFormatter_ReadsMultipleOperations_Successfully()
{
// Arrange
var formatter = new JsonPatchInputFormatter();
var content = "[{\"op\": \"add\", \"path\" : \"Customer/Name\", \"value\":\"John\"}," +
"{\"op\": \"remove\", \"path\" : \"Customer/Name\"}]";
var contentBytes = Encoding.UTF8.GetBytes(content);
var modelState = new ModelStateDictionary();
var httpContext = GetHttpContext(contentBytes);
var provider = new EmptyModelMetadataProvider();
var metadata = provider.GetMetadataForType(typeof(JsonPatchDocument<Customer>));
var context = new InputFormatterContext(
httpContext,
modelName: string.Empty,
modelState: modelState,
metadata: metadata);
// Act
var result = await formatter.ReadAsync(context);
// Assert
Assert.False(result.HasError);
var patchDoc = Assert.IsType<JsonPatchDocument<Customer>>(result.Model);
Assert.Equal("add", patchDoc.Operations[0].op);
Assert.Equal("Customer/Name", patchDoc.Operations[0].path);
Assert.Equal("John", patchDoc.Operations[0].value);
Assert.Equal("remove", patchDoc.Operations[1].op);
Assert.Equal("Customer/Name", patchDoc.Operations[1].path);
}
public void ModelType_UsesDeclaredType_WhenModelIsNull()
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(typeof(BaseClass), model: null);
// Act
var modelType = modelExplorer.ModelType;
// Assert
Assert.Equal(typeof(BaseClass), modelType);
}
public void ModelType_UsesRuntimeType()
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(typeof(BaseClass), new DerivedClass());
// Act
var modelType = modelExplorer.ModelType;
// Assert
Assert.Equal(typeof(DerivedClass), modelType);
}
public void GetSimpleDisplayText_WithoutSimpleDisplayProperty(
object model,
Type modelType,
string expectedResult)
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(modelType, model);
// Act
var result = modelExplorer.GetSimpleDisplayText();
// Assert
Assert.Equal(expectedResult, result);
}
public void ConstructorWithOneParameterInitalizesMembers()
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
// Act
var viewData = new ViewDataDictionary(metadataProvider);
// Assert
Assert.NotNull(viewData.ModelState);
Assert.NotNull(viewData.TemplateInfo);
Assert.Null(viewData.Model);
Assert.NotNull(viewData.ModelMetadata);
Assert.Equal(0, viewData.Count);
}
public void Constructor_InitalizesMembers()
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var modelState = new ModelStateDictionary();
// Act
var viewData = new ViewDataDictionary<string>(metadataProvider, modelState);
// Assert
Assert.Same(modelState, viewData.ModelState);
Assert.NotNull(viewData.TemplateInfo);
Assert.Null(viewData.Model);
Assert.NotNull(viewData.ModelMetadata);
Assert.Equal(0, viewData.Count);
}
public void FromStringExpression_SetsContainerAsExpected()
{
// Arrange
var myModel = new TestModel { SelectedCategory = new Category() };
var provider = new EmptyModelMetadataProvider();
var viewData = new ViewDataDictionary<TestModel>(provider);
viewData["Object"] = myModel;
// Act
var metadata = ExpressionMetadataProvider.FromStringExpression("Object.SelectedCategory",
viewData,
provider);
// Assert
Assert.Same(myModel, metadata.Container.Model);
}
public void ObjectTemplateDisplaysNullDisplayTextWhenObjectIsNull()
{
// Arrange
var html = DefaultTemplatesUtilities.GetHtmlHelper();
var metadata =
new EmptyModelMetadataProvider()
.GetMetadataForType(null, typeof(DefaultTemplatesUtilities.ObjectTemplateModel));
metadata.NullDisplayText = "(null value)";
html.ViewData.ModelMetadata = metadata;
// Act
var result = DefaultDisplayTemplates.ObjectTemplate(html);
// Assert
Assert.Equal(metadata.NullDisplayText, result);
}
public async Task JsonFormatterReadsSimpleTypes(string content, Type type, object expected)
{
// Arrange
var formatter = new JsonInputFormatter();
var contentBytes = Encoding.UTF8.GetBytes(content);
var httpContext = GetHttpContext(contentBytes);
var modelState = new ModelStateDictionary();
var metadata = new EmptyModelMetadataProvider().GetMetadataForType(null, type);
var context = new InputFormatterContext(httpContext, metadata, modelState);
// Act
await formatter.ReadAsync(context);
// Assert
Assert.Equal(expected, context.Model);
}
public void Properties_UsesDeclaredType_WhenModelIsNull()
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(typeof(BaseClass), model: null);
// Act
var properties = modelExplorer.Properties.ToArray();
// Assert
Assert.Equal(1, properties.Length);
var baseProperty = Assert.Single(properties, p => p.Metadata.PropertyName == "Base1");
Assert.Equal(typeof(int), baseProperty.Metadata.ModelType);
Assert.Equal(typeof(BaseClass), baseProperty.Metadata.ContainerType);
Assert.Same(modelExplorer, baseProperty.Container);
}
public void FromLambaExpression_SetsContainerAsExpected()
{
// Arrange
var myModel = new TestModel { SelectedCategory = new Category() };
var provider = new EmptyModelMetadataProvider();
var viewData = new ViewDataDictionary<TestModel>(provider);
viewData.Model = myModel;
// Act
var metadata = ExpressionMetadataProvider.FromLambdaExpression<TestModel, Category>(
model => model.SelectedCategory,
viewData,
provider);
// Assert
Assert.Same(myModel, metadata.Container.Model);
}
private static ModelBindingContext GetBindingContext(Type modelType)
{
var metadataProvider = new EmptyModelMetadataProvider();
ModelBindingContext bindingContext = new ModelBindingContext
{
ModelMetadata = metadataProvider.GetMetadataForType(modelType),
ModelName = "someName",
OperationBindingContext = new OperationBindingContext
{
HttpContext = new DefaultHttpContext(),
MetadataProvider = metadataProvider,
}
};
bindingContext.OperationBindingContext.HttpContext.Request.Method = "GET";
return bindingContext;
}
public void ObjectTemplateDisplaysSimpleDisplayTextWhenTemplateDepthGreaterThanOne()
{
// Arrange
var model = new DefaultTemplatesUtilities.ObjectTemplateModel();
var html = DefaultTemplatesUtilities.GetHtmlHelper(model);
var metadata =
new EmptyModelMetadataProvider()
.GetMetadataForType(() => model, typeof(DefaultTemplatesUtilities.ObjectTemplateModel));
metadata.SimpleDisplayText = "Simple Display Text";
html.ViewData.ModelMetadata = metadata;
html.ViewData.TemplateInfo.AddVisited("foo");
html.ViewData.TemplateInfo.AddVisited("bar");
// Act
var result = DefaultDisplayTemplates.ObjectTemplate(html);
// Assert
Assert.Equal(metadata.SimpleDisplayText, result);
}
public async Task JsonFormatterReadsComplexTypes()
{
// Arrange
var content = "{name: 'Person Name', Age: '30'}";
var formatter = new JsonInputFormatter();
var contentBytes = Encoding.UTF8.GetBytes(content);
var httpContext = GetHttpContext(contentBytes);
var modelState = new ModelStateDictionary();
var metadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(User));
var context = new InputFormatterContext(httpContext, metadata, modelState);
// Act
await formatter.ReadAsync(context);
// Assert
var model = Assert.IsType<User>(context.Model);
Assert.Equal("Person Name", model.Name);
Assert.Equal(30, model.Age);
}
public void CopyConstructors_InitalizeModelAndModelMetadataBasedOnSource()
{
// Arrange
var metadataProvider = new EmptyModelMetadataProvider();
var model = new TestModel();
var source = new ViewDataDictionary<object>(metadataProvider)
{
Model = model
};
source["foo"] = "bar";
source.TemplateInfo.HtmlFieldPrefix = "prefix";
// Act
var viewData1 = new ViewDataDictionary<object>(source);
var viewData2 = new ViewDataDictionary(source);
// Assert
Assert.NotNull(viewData1.ModelState);
Assert.NotNull(viewData1.TemplateInfo);
Assert.Equal("prefix", viewData1.TemplateInfo.HtmlFieldPrefix);
Assert.NotSame(source.TemplateInfo, viewData1.TemplateInfo);
Assert.Same(model, viewData1.Model);
Assert.NotNull(viewData1.ModelMetadata);
Assert.Equal(typeof(TestModel), viewData1.ModelMetadata.ModelType);
Assert.Same(source.ModelMetadata, viewData1.ModelMetadata);
Assert.Equal(source.Count, viewData1.Count);
Assert.Equal("bar", viewData1["foo"]);
Assert.IsType<CopyOnWriteDictionary<string, object>>(viewData1.Data);
Assert.NotNull(viewData2.ModelState);
Assert.NotNull(viewData2.TemplateInfo);
Assert.Equal("prefix", viewData2.TemplateInfo.HtmlFieldPrefix);
Assert.NotSame(source.TemplateInfo, viewData2.TemplateInfo);
Assert.Same(model, viewData2.Model);
Assert.NotNull(viewData2.ModelMetadata);
Assert.Equal(typeof(TestModel), viewData2.ModelMetadata.ModelType);
Assert.Same(source.ModelMetadata, viewData2.ModelMetadata);
Assert.Equal(source.Count, viewData2.Count);
Assert.Equal("bar", viewData2["foo"]);
Assert.IsType<CopyOnWriteDictionary<string, object>>(viewData2.Data);
}
public void MultipartFormatter_CanRead_ReturnsTrueForSupportedMediaTypes(string requestContentType)
{
// Arrange
var formatter = new MultipartFormatter();
var httpContext = new DefaultHttpContext();
httpContext.Request.ContentType = requestContentType;
var provider = new EmptyModelMetadataProvider();
var metadata = provider.GetMetadataForType(typeof(void));
var context = new InputFormatterContext(
httpContext,
modelName: string.Empty,
modelState: new ModelStateDictionary(),
metadata: metadata);
// Act
var result = formatter.CanRead(context);
// Assert
Assert.True(result);
}
public void CanRead_ReturnsTrueForAnySupportedContentType(string requestContentType, bool expectedCanRead)
{
// Arrange
var formatter = new JsonInputFormatter();
var contentBytes = Encoding.UTF8.GetBytes("content");
var httpContext = GetHttpContext(contentBytes, contentType: requestContentType);
var provider = new EmptyModelMetadataProvider();
var metadata = provider.GetMetadataForType(typeof(string));
var formatterContext = new InputFormatterContext(
httpContext,
modelName: string.Empty,
modelState: new ModelStateDictionary(),
metadata: metadata);
// Act
var result = formatter.CanRead(formatterContext);
// Assert
Assert.Equal(expectedCanRead, result);
}
public void Properties_UsesRuntimeType()
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(typeof(BaseClass), new DerivedClass());
// Act
var properties = modelExplorer.Properties.ToArray();
// Assert
Assert.Equal(2, properties.Length);
var baseProperty = Assert.Single(properties, p => p.Metadata.PropertyName == "Base1");
Assert.Equal(typeof(int), baseProperty.Metadata.ModelType);
Assert.Equal(typeof(DerivedClass), baseProperty.Metadata.ContainerType);
Assert.Same(modelExplorer, baseProperty.Container);
var derivedProperty = Assert.Single(properties, p => p.Metadata.PropertyName == "Derived1");
Assert.Equal(typeof(string), derivedProperty.Metadata.ModelType);
Assert.Equal(typeof(DerivedClass), derivedProperty.Metadata.ContainerType);
Assert.Same(modelExplorer, derivedProperty.Container);
}
public void LabelHelpers_DisplayMetadataPropertyNameForProperty()
{
// Arrange
var propertyName = "Property1";
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider
.GetModelExplorerForType(typeof(DefaultTemplatesUtilities.ObjectTemplateModel), model: null)
.GetExplorerForProperty(propertyName);
var helper = DefaultTemplatesUtilities.GetHtmlHelper();
helper.ViewData.ModelExplorer = modelExplorer;
// Act
var labelResult = helper.Label(expression: string.Empty);
var labelForResult = helper.LabelFor(m => m);
var labelForModelResult = helper.LabelForModel();
// Assert
Assert.Equal("<label for=\"\">HtmlEncode[[" + propertyName + "]]</label>", labelResult.ToString());
Assert.Equal("<label for=\"\">HtmlEncode[[" + propertyName + "]]</label>", labelForResult.ToString());
Assert.Equal("<label for=\"\">HtmlEncode[[" + propertyName + "]]</label>", labelForModelResult.ToString());
}
public void Properties_UsesRuntimeType()
{
// Arrange
var provider = new EmptyModelMetadataProvider();
var modelExplorer = provider.GetModelExplorerForType(typeof(BaseClass), new DerivedClass());
// Act
var properties = modelExplorer.Properties.ToArray();
// Assert
Assert.Equal(2, properties.Length);
var baseProperty = Assert.Single(properties, p => p.Metadata.PropertyName == "Base1");
Assert.Equal(typeof(int), baseProperty.Metadata.ModelType);
Assert.Equal(typeof(DerivedClass), baseProperty.Metadata.ContainerType);
Assert.Same(modelExplorer, baseProperty.Container);
var derivedProperty = Assert.Single(properties, p => p.Metadata.PropertyName == "Derived1");
Assert.Equal(typeof(string), derivedProperty.Metadata.ModelType);
Assert.Equal(typeof(DerivedClass), derivedProperty.Metadata.ContainerType);
Assert.Same(modelExplorer, derivedProperty.Container);
}
public void ModelStateConstructorWithDetail_AddsCorrectDictionaryItems()
{
// Arrange
ModelStateDictionary modelState = new ModelStateDictionary();
var provider = new EmptyModelMetadataProvider();
var metadata = provider.GetMetadataForProperty(typeof(string), nameof(string.Length));
modelState.AddModelError("[0].Name", "error1");
modelState.AddModelError("[0].Name", "error2");
modelState.AddModelError("[0].Address", "error");
modelState.AddModelError("[2].Name", new Exception("OH NO"), metadata);
// Act
HttpError error = new HttpError(modelState, true);
// Assert
HttpError modelStateError = error["ModelState"] as HttpError;
Assert.Contains(new KeyValuePair<string, object>("Message", "The request is invalid."), error);
Assert.Contains("error1", modelStateError["[0].Name"] as IEnumerable<string>);
Assert.Contains("error2", modelStateError["[0].Name"] as IEnumerable<string>);
Assert.Contains("error", modelStateError["[0].Address"] as IEnumerable<string>);
Assert.True(modelStateError.ContainsKey("[2].Name"));
Assert.Contains("OH NO", modelStateError["[2].Name"] as IEnumerable<string>);
}
private ModelValidationContext GetModelValidationContext(
object model, Type type, List <Type> excludedTypes = null)
{
var modelStateDictionary = new ModelStateDictionary();
var providers = new IModelValidatorProvider[]
{
new DataAnnotationsModelValidatorProvider(),
new DataMemberModelValidatorProvider()
};
var modelMetadataProvider = new EmptyModelMetadataProvider();
var excludedValidationTypesPredicate =
new List <IExcludeTypeValidationFilter>();
if (excludedTypes != null)
{
var mockExcludeTypeFilter = new Mock <IExcludeTypeValidationFilter>();
mockExcludeTypeFilter.Setup(o => o.IsTypeExcluded(It.IsAny <Type>()))
.Returns <Type>(excludedType =>
excludedTypes.Any(t => t.IsAssignableFrom(excludedType)));
excludedValidationTypesPredicate.Add(mockExcludeTypeFilter.Object);
}
return(new ModelValidationContext(
modelMetadataProvider,
new CompositeModelValidatorProvider(providers),
modelStateDictionary,
new ModelMetadata(
provider: modelMetadataProvider,
containerType: typeof(object),
modelAccessor: () => model,
modelType: type,
propertyName: null),
containerMetadata: null,
excludeFromValidationFilters: excludedValidationTypesPredicate));
}
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_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);
}
private static ModelBindingContext GetBindingContext(Type modelType, HttpContext httpContext)
{
var metadataProvider = new EmptyModelMetadataProvider();
var bindingContext = new ModelBindingContext
{
ModelMetadata = metadataProvider.GetMetadataForType(modelType),
ModelName = "file",
ModelState = new ModelStateDictionary(),
OperationBindingContext = new OperationBindingContext
{
ModelBinder = new FormFileModelBinder(),
MetadataProvider = metadataProvider,
HttpContext = httpContext,
},
ValidationState = new ValidationStateDictionary(),
};
return bindingContext;
}
private static ViewContext MakeViewContext(string requestPathBase = null)
{
var actionContext = new ActionContext(new DefaultHttpContext(), new RouteData(), new ActionDescriptor());
if (requestPathBase != null)
{
actionContext.HttpContext.Request.PathBase = new Http.PathString(requestPathBase);
}
var metadataProvider = new EmptyModelMetadataProvider();
var viewData = new ViewDataDictionary(metadataProvider);
var viewContext = new ViewContext(
actionContext,
Mock.Of<IView>(),
viewData,
Mock.Of<ITempDataDictionary>(),
TextWriter.Null,
new HtmlHelperOptions());
return viewContext;
}
private static ModelBindingContext GetBindingContext(
Type modelType,
IEnumerable<IInputFormatter> inputFormatters = null,
HttpContext httpContext = null,
IModelMetadataProvider metadataProvider = null)
{
if (httpContext == null)
{
httpContext = new DefaultHttpContext();
}
if (inputFormatters == null)
{
inputFormatters = Enumerable.Empty<IInputFormatter>();
}
if (metadataProvider == null)
{
metadataProvider = new EmptyModelMetadataProvider();
}
var operationBindingContext = new OperationBindingContext
{
InputFormatters = inputFormatters.ToList(),
ModelBinder = new BodyModelBinder(),
MetadataProvider = metadataProvider,
HttpContext = httpContext,
};
var bindingContext = new ModelBindingContext
{
ModelMetadata = metadataProvider.GetMetadataForType(modelType),
ModelName = "someName",
ValueProvider = Mock.Of<IValueProvider>(),
ModelState = new ModelStateDictionary(),
OperationBindingContext = operationBindingContext,
BindingSource = BindingSource.Body,
};
return bindingContext;
}
private static ModelExpression CreateModelExpression(string name)
{
var modelMetadataProvider = new EmptyModelMetadataProvider();
return new ModelExpression(
name,
modelMetadataProvider.GetModelExplorerForType(typeof(object), model: null));
}
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 Invoke_UsesDefaultValuesIfNotBound()
{
// Arrange
var actionDescriptor = new ControllerActionDescriptor
{
ControllerTypeInfo = typeof(TestController).GetTypeInfo(),
BoundProperties = new List<ParameterDescriptor>(),
MethodInfo = typeof(TestController).GetTypeInfo()
.DeclaredMethods
.First(m => m.Name.Equals("ActionMethodWithDefaultValues", StringComparison.Ordinal)),
Parameters = new List<ParameterDescriptor>
{
new ParameterDescriptor
{
Name = "value",
ParameterType = typeof(int),
BindingInfo = new BindingInfo(),
}
},
FilterDescriptors = new List<FilterDescriptor>()
};
var binder = new Mock<IModelBinder>();
binder.Setup(b => b.BindModelAsync(It.IsAny<ModelBindingContext>()))
.Returns(ModelBindingResult.NoResultAsync);
var context = new Mock<HttpContext>();
context.SetupGet(c => c.Items)
.Returns(new Dictionary<object, object>());
context.Setup(c => c.RequestServices.GetService(typeof(ILoggerFactory)))
.Returns(new NullLoggerFactory());
var actionContext = new ActionContext(context.Object, new RouteData(), actionDescriptor);
var controllerFactory = new Mock<IControllerFactory>();
controllerFactory.Setup(c => c.CreateController(It.IsAny<ControllerContext>()))
.Returns(new TestController());
var metadataProvider = new EmptyModelMetadataProvider();
var invoker = new ControllerActionInvoker(
actionContext,
new List<IFilterProvider>(),
controllerFactory.Object,
actionDescriptor,
new IInputFormatter[0],
new DefaultControllerActionArgumentBinder(
metadataProvider,
new DefaultObjectValidator(metadataProvider)),
new IModelBinder[] { binder.Object },
new IModelValidatorProvider[0],
new IValueProviderFactory[0],
new NullLoggerFactory().CreateLogger<ControllerActionInvoker>(),
new DiagnosticListener("Microsoft.AspNet"),
200);
// Act
await invoker.InvokeAsync();
// Assert
Assert.Equal(5, context.Object.Items["Result"]);
}
private static ViewContext MakeViewContext(HttpContext httpContext)
{
var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor());
var metadataProvider = new EmptyModelMetadataProvider();
var viewData = new ViewDataDictionary(metadataProvider);
var viewContext = new ViewContext(
actionContext,
Mock.Of<IView>(),
viewData,
Mock.Of<ITempDataDictionary>(),
TextWriter.Null,
new HtmlHelperOptions());
return viewContext;
}
