public void GetTagHelperSpans_ReturnsExpectedSpans()
{
// Arrange
var codeDocument = GetCodeDocument(
@"<div>
<taghelper></taghelper>
</div>");
var tagHelperContext = codeDocument.GetTagHelperContext();
var expectedSourceSpan = new SourceSpan("test.cshtml", 11, 1, 4, 23);
var syntaxTree = codeDocument.GetSyntaxTree();
var service = new DefaultRazorSyntaxFactsService();
// Act
var spans = service.GetTagHelperSpans(syntaxTree);
// Assert
var actualSpan = Assert.Single(spans);
Assert.Equal(expectedSourceSpan, actualSpan.Span);
Assert.Equal(tagHelperContext.TagHelpers, actualSpan.TagHelpers);
Assert.Equal(tagHelperContext.Prefix, actualSpan.Binding.TagHelperPrefix);
Assert.Equal("div", actualSpan.Binding.ParentTagName);
}
