public void IncrementalParse() { var oldText = new StringText("class C { }"); var newText = oldText.WithChanges(new TextChange(new TextSpan(9, 0), "void M() { } ")); SyntaxTree tree = SyntaxTree.ParseText(oldText); var newTree = tree.WithChangedText(newText); Assert.AreEqual(newText.ToString(), newTree.ToString()); }