public void GenerateErrorMessage_ErrorMessageSetOnContext_ReturnsContent()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
formGroupContext.SetErrorMessage(visuallyHiddenText: "vht", attributes: null, content: new HtmlString("Error message"));
var modelHelper = new Mock <IModelHelper>();
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
Id = "test"
};
// Act
var errorMessage = tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.NotNull(errorMessage);
}
public void GenerateErrorMessage_NonEmptyErrorMessage_AddsErrorMessageIdToDescribedBy()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
formGroupContext.SetErrorMessage(visuallyHiddenText: null, attributes: null, content: new HtmlString("Context error"));
var modelHelper = new Mock <IModelHelper>();
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
Id = "test"
};
// Act
var errorMessage = tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
var element = errorMessage.RenderToElement();
Assert.Equal("test-error", element.GetAttribute("id"));
Assert.Contains("test-error", tagHelper.DescribedBy?.Split(' ') ?? Array.Empty <string>());
}
public void GenerateErrorMessage_NoErrorMessageOnContextOrModelStateErrors_ReturnsNull()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
var modelExplorer = new EmptyModelMetadataProvider().GetModelExplorerForType(typeof(Model), new Model())
.GetExplorerForProperty(nameof(Model.SimpleProperty));
var viewContext = new ViewContext();
var modelExpression = "Foo";
var modelHelper = new Mock <IModelHelper>();
modelHelper.Setup(mock => mock.GetValidationMessage(viewContext, modelExplorer, modelExpression)).Returns((string)null);
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
AspFor = new ModelExpression(modelExpression, modelExplorer),
Id = "test",
ViewContext = viewContext
};
// Act
var errorMessage = tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.Null(errorMessage);
}
public void GenerateErrorMessage_AddsErrorToFormErrorContext()
{
// Arrange
var formErrorContext = new FormErrorContext();
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(FormErrorContext), formErrorContext }
},
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
formGroupContext.SetErrorMessage(visuallyHiddenText: "vht", attributes: null, content: new HtmlString("Error message"));
var modelHelper = new Mock <IModelHelper>();
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
Id = "test"
};
// Act
tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.Collection(
formErrorContext.Errors,
error =>
{
Assert.Equal("Error message", error.Content.RenderToString());
});
}
public void GenerateErrorMessage_EmptyErrorMessage_DoesNotAddErrorMessageIdToDescribedBy()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
var modelHelper = new Mock <IModelHelper>();
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
Id = "test"
};
// Act
tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.DoesNotContain("test-error", tagHelper.DescribedBy?.Split(' ') ?? Array.Empty <string>());
}
public void GenerateErrorMessage_NoErrorMessageOnContextOrAspFor_ReturnsNull()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
var modelHelper = new Mock <IModelHelper>();
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
Id = "test"
};
// Act
var errorMessage = tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.Null(errorMessage);
}
public void GenerateErrorMessage_ErrorMessageOnContextAndModelStateUsesContextError_ReturnsContent()
{
// Arrange
var tagHelperContext = new TagHelperContext(
tagName: "test",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var formGroupContext = new TestFormGroupContext();
formGroupContext.SetErrorMessage(visuallyHiddenText: "vht", attributes: null, content: new HtmlString("Context error"));
var modelExplorer = new EmptyModelMetadataProvider().GetModelExplorerForType(typeof(Model), new Model())
.GetExplorerForProperty(nameof(Model.SimpleProperty));
var viewContext = new ViewContext();
var modelExpression = nameof(Model.SimpleProperty);
var modelHelper = new Mock <IModelHelper>();
modelHelper.Setup(mock => mock.GetValidationMessage(viewContext, modelExplorer, modelExpression)).Returns("ModelState error");
var tagHelper = new TestFormGroupTagHelper(new ComponentGenerator(), modelHelper.Object)
{
AspFor = new ModelExpression(modelExpression, modelExplorer),
Id = "test",
ViewContext = viewContext
};
// Act
var errorMessage = tagHelper.GenerateErrorMessage(tagHelperContext, formGroupContext);
// Assert
Assert.NotNull(errorMessage);
Assert.Contains("Context error", errorMessage.RenderToString());
}
