private void TestAnnotation(SyntaxAnnotation annotation, SyntaxNode root, SyntaxTrivia oldTrivia) { var results = root.GetAnnotatedTrivia(annotation); Assert.Equal(1, results.Count()); var annotatedTrivia = results.Single(); // try to check whether it is same token as old token. Assert.Equal(oldTrivia.FullSpan, annotatedTrivia.FullSpan); Assert.Equal(oldTrivia.Span, annotatedTrivia.Span); Assert.True(oldTrivia.IsEquivalentTo(annotatedTrivia)); }