diff --git a/changelog.md b/changelog.md
index 5f35acd18..0116c51ab 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,6 @@
 # 更新日志
 2.0(2020-03)
+- 修复了连续多次调用BI.Msg.alert后只有最后弹出的可以关闭的问题
 - 修复了time_combo设置格式为%M:%S后value设置大于30分钟的值时标红的问题
 - 复选下拉树系列展开节点性能优化
 
diff --git a/src/base/foundation/message.js b/src/base/foundation/message.js
index 8dbbca146..c2a96e0cc 100644
--- a/src/base/foundation/message.js
+++ b/src/base/foundation/message.js
@@ -5,7 +5,9 @@
  */
 BI.Msg = function () {
 
-    var messageShow, $mask, $pop;
+    var $mask, $pop;
+
+    var messageShows = [];
 
     var toastStack = [];
 
@@ -67,7 +69,7 @@ BI.Msg = function () {
             }, 5000);
         },
         _show: function (hasCancel, title, message, callback) {
-            $mask = BI.Widget._renderEngine.createElement("<div class=\"bi-z-index-mask\">").css({
+            BI.isNull($mask) && ($mask = BI.Widget._renderEngine.createElement("<div class=\"bi-z-index-mask\">").css({
                 position: "absolute",
                 zIndex: BI.zIndex_tip - 2,
                 top: 0,
@@ -75,7 +77,7 @@ BI.Msg = function () {
                 right: 0,
                 bottom: 0,
                 opacity: 0.5
-            }).appendTo("body");
+            }).appendTo("body"));
             $pop = BI.Widget._renderEngine.createElement("<div class=\"bi-message-depend\">").css({
                 position: "absolute",
                 zIndex: BI.zIndex_tip - 1,
@@ -85,8 +87,12 @@ BI.Msg = function () {
                 bottom: 0
             }).appendTo("body");
             var close = function () {
-                messageShow.destroy();
-                $mask.remove();
+                messageShows[messageShows.length - 1].destroy();
+                messageShows.pop();
+                if (messageShows.length === 0) {
+                    $mask.remove();
+                    $mask = null;
+                }
             };
             var controlItems = [];
             if (hasCancel === true) {
@@ -191,7 +197,7 @@ BI.Msg = function () {
                 ]
             };
 
-            messageShow = BI.createWidget(conf);
+            messageShows[messageShows.length] = BI.createWidget(conf);
         }
     };
 }();
\ No newline at end of file
diff --git a/src/base/grid/__test__/grid.test.js b/src/base/grid/__test__/grid.test.js
new file mode 100644
index 000000000..d65c3d24c
--- /dev/null
+++ b/src/base/grid/__test__/grid.test.js
@@ -0,0 +1,41 @@
+/**
+ * @author windy
+ * @version 2.0
+ * Created by windy on 2020/3/20
+ */
+describe("GridTest", function () {
+
+    /**
+     * test_author_windy
+     */
+    it("grid", function () {
+        var items = [];
+        var rowCount = 1000, columnCount = 100;
+        for (var i = 0; i < rowCount; i++) {
+            items[i] = [];
+            for (var j = 0; j < columnCount; j++) {
+                items[i][j] = {
+                    type: "bi.label",
+                    text: i + "-" + j
+                };
+            }
+        }
+        var grid = BI.createWidget({
+            type: "bi.grid_view",
+            width: 400,
+            height: 300,
+            estimatedRowSize: 30,
+            estimatedColumnSize: 100,
+            items: items,
+            scrollTop: 100,
+            rowHeightGetter: function () {
+                return 30;
+            },
+            columnWidthGetter: function () {
+                return 100;
+            }
+        });
+        // TODO 性能展示类控件，不知道要测啥，标记一下
+        grid.destroy();
+    });
+});
\ No newline at end of file
diff --git a/src/case/colorchooser/farbtastic/__test__/farbtastic.test.js b/src/case/colorchooser/farbtastic/__test__/farbtastic.test.js
new file mode 100644
index 000000000..b3703d908
--- /dev/null
+++ b/src/case/colorchooser/farbtastic/__test__/farbtastic.test.js
@@ -0,0 +1,21 @@
+/**
+ * @author windy
+ * @version 2.0
+ * Created by windy on 2020/3/20
+ */
+describe("FarbtasticTest", function () {
+
+    /**
+     * test_author_windy
+     */
+    it("Farbtastic", function () {
+        var a = BI.Test.createWidget({
+            type: "bi.farbtastic",
+            height: 200,
+            width: 200
+        });
+        a.setValue("#d56c6c");
+        expect(a.getValue()).to.equal("#d56c6c");
+        a.destroy();
+    });
+});
\ No newline at end of file
diff --git a/src/case/pager/__test__/pager.test.js b/src/case/pager/__test__/pager.test.js
index 257e79272..a0904109e 100644
--- a/src/case/pager/__test__/pager.test.js
+++ b/src/case/pager/__test__/pager.test.js
@@ -78,4 +78,20 @@ describe("PagerTest", function () {
         a.clear();
         a.destroy();
     });
+
+    /**
+     * test_author_windy
+     */
+    it("detail_Pager", function () {
+        var a = BI.Test.createWidget({
+            type: "bi.detail_pager",
+            pages: 100
+        });
+        a.setAllPages(200);
+        a.populate();
+        a.setValue(200);
+        expect(a.hasPrev(200)).to.equal(true);
+        expect(a.hasNext(200)).to.equal(false);
+        a.destroy();
+    });
 });
\ No newline at end of file