it("should list hints between prev attribute value and next attribute name (space on both sides of cursor)", function () {
                testDocument.replaceRange(" ", { line: 8, ch: 14 });  // insert a space: "'aaa' class" -> "'aaa'  class"

                testEditor.setCursorPos({ line: 8, ch: 15 });   // cursor between two spaces, which are between end of attribute value ("p") and start of attribute name
                var hintList = expectHints(HTMLCodeHints.attrHintProvider);