public void SetTitle_AlreadyGotTitle_ThrowsInvalidOperationException()
{
// Arrange
var context = new ErrorSummaryContext();
context.SetTitle(attributes: null, content: new HtmlString("Existing title"));
// Act
var ex = Record.Exception(() => context.SetTitle(attributes: null, content: new HtmlString("Title")));
// Assert
Assert.IsType <InvalidOperationException>(ex);
Assert.Equal("Only one <govuk-error-summary-title> element is permitted within each <govuk-error-summary>.", ex.Message);
}
public void SetTitle_SetsTitleOnContext()
{
// Arrange
var context = new ErrorSummaryContext();
// Act
context.SetTitle(attributes: null, content: new HtmlString("Title"));
// Assert
Assert.Equal("Title", context.Title?.Content?.RenderToString());
}