Add test for unresolved issue

See: #1168 (comment)

test/issues/1168.test.js

@@ -0,0 +1,34 @@
+describe("#1168", () => {
+  describe("when navigation happens too slow after opening new tab to a page which then redirects", () => {
+    let clock, tab;
+
+    beforeEach(async () => {
+      await helper.browser.initializeWithTab({
+        cookieStoreId: "firefox-container-1",
+        url: "https://bugzilla.mozilla.org"
+      });
+      await helper.popup.clickElementById("container-page-assigned");
+
+      clock = sinon.useFakeTimers();
+      tab = await helper.browser.openNewTab({});
+
+      clock.tick(2000);
+
+      await background.browser.tabs._navigate(tab.id, "https://duckduckgo.com/?q=%21bugzilla+thing&t=ffab");
+      await background.browser.tabs._redirect(tab.id, [
+        "https://bugzilla.mozilla.org"
+      ]);
+    });
+
+    // Not solved yet
+    // See: https://github.com/mozilla/multi-account-containers/issues/1168#issuecomment-378394091
+    it.skip("should remove the old tab", async () => {
+      expect(background.browser.tabs.create).to.have.been.calledOnce;
+      expect(background.browser.tabs.remove).to.have.been.calledWith(tab.id);
+    });
+
+    afterEach(() => {
+      clock.restore();
+    });
+  });
+});