it("should insert the selected attribute value with the closing (single) quote", function () {
                testDocument.replaceRange("dir='", { line: 9, ch: 7 });  // insert dir=' after <div tag
                testEditor.setCursorPos({ line: 9, ch: 12 });
                selectHint(HTMLCodeHints.attrHintProvider, "rtl");
                expect(testDocument.getLine(9)).toBe("  <div dir='rtl'");