Add container feature test

test/features/containers.test.js

@@ -0,0 +1,28 @@
+describe("Containers Management", () => {
+  beforeEach(async () => {
+    await helper.browser.initializeWithTab();
+  });
+
+  describe("creating a new container", () => {
+    beforeEach(async () => {
+      await helper.popup.clickElementById("container-add-link");
+      await helper.popup.clickElementById("edit-container-ok-link");
+    });
+
+    it("should create it in the browser as well", () => {
+      background.browser.contextualIdentities.create.should.have.been.calledOnce;
+    });
+
+    describe("removing it afterwards", () => {
+      beforeEach(async () => {
+        await helper.popup.clickElementById("edit-containers-link");
+        await helper.popup.clickLastMatchingElementByQuerySelector(".delete-container-icon");
+        await helper.popup.clickElementById("delete-container-ok-link");
+      });
+
+      it("should remove it in the browser as well", () => {
+        background.browser.contextualIdentities.remove.should.have.been.calledOnce;
+      });
+    });
+  });
+});