it("should list attribute value hints within an existing attribute value", function () {
                testDocument.replaceRange(" dir=\"ltr\"", { line: 7, ch: 4 });  // insert dir="ltr" between <p and >

                testEditor.setCursorPos({ line: 7, ch: 11 });       // set cursor right after dir="l
                var hintList = expectHints(HTMLCodeHints.attrHintProvider);