it("should list all prop-name hints right after the open quote for style value context", function () {
                testEditor.setCursorPos({ line: 4, ch: 12 });    // after "='"
                var hintList = expectHints(CSSCodeHints.cssPropHintProvider);
                verifyAttrHints(hintList, "align-content");  // filtered on "empty string"
            });