public async Task ProcessAsync_ParentAlreadyHasBody_ThrowsInvalidOperationException()
{
// Arrange
var panelContext = new PanelContext();
panelContext.SetBody(new HtmlString("The body"));
var context = new TagHelperContext(
tagName: "govuk-panel-title",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(PanelContext), panelContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-panel-title",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("The title");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new PanelTitleTagHelper();
// Act
var ex = await Record.ExceptionAsync(() => tagHelper.ProcessAsync(context, output));
// Assert
Assert.IsType <InvalidOperationException>(ex);
Assert.Equal("<govuk-panel-title> must be specified before <govuk-panel-body>.", ex.Message);
}
public async Task ProcessAsync_SetsTitleOnContext()
{
// Arrange
var panelContext = new PanelContext();
var context = new TagHelperContext(
tagName: "govuk-panel-title",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(PanelContext), panelContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-panel-title",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetContent("The title");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new PanelTitleTagHelper();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.Equal("The title", panelContext.Title?.RenderToString());
}
public async Task ProcessAsync_ItemAlreadyHasTitleThrowsInvalidOperationException()
{
// Arrange
var panelContext = new PanelContext();
panelContext.TrySetHeading(headingLevel: null, content: new HtmlString("Existing title"));
var context = new TagHelperContext(
tagName: "govuk-panel-title",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(PanelContext), panelContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-panel-title",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetHtmlContent("Title");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new PanelTitleTagHelper();
// Act & Assert
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => tagHelper.ProcessAsync(context, output));
Assert.Equal("Cannot render <govuk-panel-title> here.", ex.Message);
}
public async Task ProcessAsync_InvalidheadingLevelThrowsInvalidOperationException(int level)
{
// Arrange
var panelContext = new PanelContext();
var context = new TagHelperContext(
tagName: "govuk-panel-title",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(PanelContext), panelContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-panel-title",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetHtmlContent("Title");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new PanelTitleTagHelper()
{
HeadingLevel = level
};
// Act & Assert
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => tagHelper.ProcessAsync(context, output));
Assert.Equal("The 'heading-level' attribute must be between 1 and 6.", ex.Message);
}
public async Task ProcessAsync_AddsTitleToContext()
{
// Arrange
var panelContext = new PanelContext();
var context = new TagHelperContext(
tagName: "govuk-panel-title",
allAttributes: new TagHelperAttributeList(),
items: new Dictionary <object, object>()
{
{ typeof(PanelContext), panelContext }
},
uniqueId: "test");
var output = new TagHelperOutput(
"govuk-panel-title",
attributes: new TagHelperAttributeList(),
getChildContentAsync: (useCachedResult, encoder) =>
{
var tagHelperContent = new DefaultTagHelperContent();
tagHelperContent.SetHtmlContent("Title");
return(Task.FromResult <TagHelperContent>(tagHelperContent));
});
var tagHelper = new PanelTitleTagHelper()
{
HeadingLevel = 3
};
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
Assert.NotNull(panelContext.Title);
Assert.Equal(3, panelContext.Title.Value.headingLevel);
Assert.Equal("Title", panelContext.Title.Value.content.AsString());
}
/// <summary>
/// 测试初始化
/// </summary>
public PanelTitleTagHelperTest(ITestOutputHelper output)
{
_output = output;
_component = new PanelTitleTagHelper();
}
