换种方式，在controller层修改默认控制title

src/core/controller/controller.tooltips.js

@@ -65,7 +65,7 @@ BI.TooltipsController = BI.inherit(BI.Controller, {
         });
         this.showingTips = {};
         if (!this.has(name)) {
-            this.create(name, text, level, opt.container || context);
+            this.create(name, text, level, opt.container || "body");
         }
         if (!opt.belowMouse) {
             var offset = context.element.offset();

src/widget/yearmonth/__test__/combo.yearmonth.test.js

@@ -97,14 +97,12 @@ describe("YearMonthCombo", function () {
         BI.nextTick(function () {
             dateCombo.element.find(".bi-year-month-trigger .bi-basic-button").click();
             BI.nextTick(function () {
-                var input = dateCombo.element.find(".bi-year-month-trigger .bi-input");
-                BI.Test.triggerKeyDown(input, null, BI.KeyCode.ENTER, function () {
-                    BI.delay(function () {
-                        expect(dateCombo.element.find(".bi-year-month-trigger + .bi-popup-view").css("display")).to.equal("none");
-                        dateCombo.destroy();
-                        done();
-                    }, 300);
-                });
+                $("body").mousedown();
+                BI.delay(function () {
+                    expect(dateCombo.element.find(".bi-year-month-trigger + .bi-popup-view").css("display")).to.equal("none");
+                    dateCombo.destroy();
+                    done();
+                }, 300);
             })
         });
     });

src/widget/yearquarter/__test__/combo.yearquarter.test.js

@@ -97,14 +97,12 @@ describe("YearQuarterCombo", function () {
         BI.nextTick(function () {
             dateCombo.element.find(".bi-year-quarter-trigger .bi-basic-button").click();
             BI.nextTick(function () {
-                var input = dateCombo.element.find(".bi-year-quarter-trigger .bi-input");
-                BI.Test.triggerKeyDown(input, null, BI.KeyCode.ENTER, function () {
-                    BI.delay(function () {
-                        expect(dateCombo.element.find(".bi-year-quarter-trigger + .bi-popup-view").css("display")).to.equal("none");
-                        dateCombo.destroy();
-                        done();
-                    }, 300);
-                });
+                $("body").mousedown();
+                BI.delay(function () {
+                    expect(dateCombo.element.find(".bi-year-quarter-trigger + .bi-popup-view").css("display")).to.equal("none");
+                    dateCombo.destroy();
+                    done();
+                }, 300);
             })
         });
     });