Fix for DockPanel.tabsMovable to set false to all tabs

packages/widgets/src/dockpanel.ts

@@ -210,7 +210,7 @@ class DockPanel extends Widget {
    */
   set tabsMovable(value: boolean) {
     this._tabsMovable = value;
-    each(this.tabBars(), (tabbar) => tabbar.tabsMovable = value);
+    each(this.tabBars(), (tabbar) => { tabbar.tabsMovable = value });
   }
 
   /**

packages/widgets/tests/src/dockpanel.spec.ts

@@ -7,3 +7,86 @@
 |
 | The full license is in the file LICENSE, distributed with this software.
 |----------------------------------------------------------------------------*/
+
+import {
+  expect
+} from 'chai';
+
+import {
+  each
+} from '@lumino/algorithm';
+
+import {
+  TabBar, DockPanel, Widget
+} from '@lumino/widgets';
+
+import {
+//  LogWidget
+} from './widget.spec';
+
+
+describe('@lumino/widgets', () => {
+
+  describe('DockPanel', () => {
+
+    describe('#constructor()', () => {
+
+      it('should construct a new dock panel and take no arguments', () => {
+        let panel = new DockPanel();
+        expect(panel).to.be.an.instanceof(DockPanel);
+      });
+
+      it('should accept options', () => {
+        let renderer = Object.create(TabBar.defaultRenderer);
+        let panel = new DockPanel({
+          tabsMovable: true,
+          renderer
+        });
+        each(panel.tabBars(), (tabBar) => { expect(tabBar.tabsMovable).to.equal(true); });
+        each(panel.tabBars(), (tabBar) => { expect(tabBar.renderer).to.equal(renderer); });
+      });
+
+      it('should add a `lm-DockPanel` class', () => {
+        let panel = new DockPanel();
+        expect(panel.hasClass('lm-DockPanel')).to.equal(true);
+      });
+
+    });
+
+    describe('#dispose()', () => {
+
+      it('should dispose of the resources held by the widget', () => {
+        let panel = new DockPanel();
+        panel.addWidget(new Widget());
+        panel.dispose();
+        expect(panel.isDisposed).to.equal(true);
+        panel.dispose();
+        expect(panel.isDisposed).to.equal(true);
+      });
+
+    });
+
+    describe('#tabsMovable', () => {
+
+      it('should get whether tabs are movable', () => {
+        let panel = new DockPanel();
+        expect(panel.tabsMovable).to.equal(true);
+      });
+
+      it('should set tabsMovable of all tabs', () => {
+        let panel = new DockPanel();
+        let w1 = new Widget();
+        let w2 = new Widget();
+        panel.addWidget(w1);
+        panel.addWidget(w2, { mode: 'split-right', ref: w1 });
+        each(panel.tabBars(), (tabBar) => { expect(tabBar.tabsMovable).to.equal(true); });
+
+        panel.tabsMovable = false;
+        each(panel.tabBars(), (tabBar) => { expect(tabBar.tabsMovable).to.equal(false); });
+      });
+
+    });
+
+  });
+
+});