public async Task ProcessAsync_AlreadyHaveDescriptionThrowsInvalidOperationException()
{
// Arrange
var errorSummaryContext = new ErrorSummaryContext();
errorSummaryContext.TrySetDescription(attributes: null, new HtmlString("Existing description"));
var context = new TagHelperContext(
tagName: "govuk-error-summary-description",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(ErrorSummaryContext), errorSummaryContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-error-summary-description",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Some description");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new ErrorSummaryDescriptionTagHelper();
// Act
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => tagHelper.ProcessAsync(context, output));
Assert.Equal("Cannot render <govuk-error-summary-description> here.", ex.Message);
}
public async Task ProcessAsync_AddsDescriptionToContext()
{
// Arrange
var errorSummaryContext = new ErrorSummaryContext();
var context = new TagHelperContext(
tagName: "govuk-error-summary-description",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(ErrorSummaryContext), errorSummaryContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-error-summary-description",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Some description");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new ErrorSummaryDescriptionTagHelper();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Equal("Some description", errorSummaryContext.Description?.content.AsString());
}