public async Task ProcessAsync_MissingLegend_ThrowsInvalidOperationException()
{
// Arrange
var context = new TagHelperContext(
tagName: "govuk-fieldset",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-fieldset",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var fieldsetContext = context.GetContextItem <FieldsetContext>();
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Main content");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new FieldsetTagHelper()
{
DescribedBy = "describedby",
Role = "therole"
};
// Act
var ex = await Record.ExceptionAsync(() => tagHelper.ProcessAsync(context, output));
// Assert
Assert.IsType <InvalidOperationException>(ex);
Assert.Equal("A <govuk-fieldset-legend> element must be provided.", ex.Message);
}
public async Task ProcessAsync_IsPageHeadingGeneratesExpectedOutput()
{
// Arrange
var context = new TagHelperContext(
tagName: "govuk-fieldset",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-fieldset",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var fieldsetContext = (FieldsetContext)context.Items[typeof(FieldsetContext)];
fieldsetContext.TrySetLegend(
isPageHeading: true,
attributes: null,
content: new HtmlString("Legend text"));
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Main text");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new FieldsetTagHelper(new DefaultGovUkHtmlGenerator())
{
DescribedBy = "describedby",
Role = "therole"
};
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var html = output.AsString();
Assert.Equal(
"<fieldset aria-describedby=\"describedby\" class=\"govuk-fieldset\" role=\"therole\">" +
"<legend class=\"govuk-fieldset__legend\">" +
"<h1 class=\"govuk-fieldset__heading\">Legend text</h1>" +
"</legend>" +
"Main text" +
"</fieldset>",
html);
}
public async Task ProcessAsync_LegendHasIsPageHeading_GeneratesExpectedOutput()
{
// Arrange
var context = new TagHelperContext(
tagName: "govuk-fieldset",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>(),
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-fieldset",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var fieldsetContext = context.GetContextItem <FieldsetContext>();
fieldsetContext.SetLegend(
isPageHeading: true,
attributes: null,
content: new HtmlString("Legend text"));
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Main content");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new FieldsetTagHelper()
{
DescribedBy = "describedby",
Role = "therole"
};
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var expectedHtml = @"
<fieldset aria-describedby=""describedby"" class=""govuk-fieldset"" role=""therole"">
<legend class=""govuk-fieldset__legend"">
<h1 class=""govuk-fieldset__heading"">Legend text</h1>
</legend>
Main content
</fieldset>";
AssertEx.HtmlEqual(expectedHtml, output.RenderToString());
}
