public async Task ProcessAsync_AddsSummaryToContext()
{
// Arrange
var accordionContext = new AccordionContext();
var itemContext = new AccordionItemContext();
var context = new TagHelperContext(
tagName: "govuk-accordion-item-summary",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(AccordionContext), accordionContext },
{ typeof(AccordionItemContext), itemContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-accordion-item-summary",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Summary content");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new AccordionItemSummaryTagHelper();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.NotNull(itemContext.Summary);
Assert.Equal("Summary content", itemContext.Summary?.Content.RenderToString());
}
public async Task ProcessAsync_ItemAlreadyHasSummaryThrowsInvalidOperationException()
{
// Arrange
var accordionContext = new AccordionContext();
var itemContext = new AccordionItemContext();
itemContext.TrySetSummary(attributes: null, new HtmlString("Existing summary"));
var context = new TagHelperContext(
tagName: "govuk-accordion-item-summary",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(AccordionContext), accordionContext },
{ typeof(AccordionItemContext), itemContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-accordion-item-summary",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("Summary content");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new AccordionItemSummaryTagHelper();
// Act & Assert
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => tagHelper.ProcessAsync(context, output));
Assert.Equal("Cannot render <govuk-accordion-item-summary> here.", ex.Message);
}
