1 files changed, 81 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/browser/browser_exit_button.js b/devtools/client/responsive/test/browser/browser_exit_button.js
new file mode 100644
index 0000000000..7fbcd3cc51
--- /dev/null
+++ b/devtools/client/responsive/test/browser/browser_exit_button.js
@@ -0,0 +1,81 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URL = "data:text/html;charset=utf-8,";
+
+// Test global exit button
+addRDMTask(TEST_URL, async function (...args) {
+  await testExitButton(...args);
+});
+
+// Test global exit button on detached tab.
+// See Bug 1262806
+addRDMTask(
+  null,
+  async function () {
+    let tab = await addTab(TEST_URL);
+    const { ui, manager } = await openRDM(tab);
+
+    await waitBootstrap(ui);
+
+    const waitTabIsDetached = Promise.all([
+      once(tab, "TabClose"),
+      once(tab.linkedBrowser, "SwapDocShells"),
+    ]);
+
+    // Detach the tab with RDM open.
+    const newWindow = gBrowser.replaceTabWithWindow(tab);
+
+    // Wait until the tab is detached and the new window is fully initialized.
+    await waitTabIsDetached;
+    await newWindow.delayedStartupPromise;
+
+    // Get the new tab instance.
+    tab = newWindow.gBrowser.tabs[0];
+
+    // Detaching a tab closes RDM.
+    ok(
+      !manager.isActiveForTab(tab),
+      "Responsive Design Mode is not active for the tab"
+    );
+
+    // Reopen the RDM and test the exit button again.
+    await testExitButton(await openRDM(tab));
+    await BrowserTestUtils.closeWindow(newWindow);
+  },
+  { onlyPrefAndTask: true }
+);
+
+async function waitBootstrap(ui) {
+  const { toolWindow, tab } = ui;
+  const { store } = toolWindow;
+  const url = String(tab.linkedBrowser.currentURI.spec);
+
+  // Wait until the viewport has been added.
+  await waitUntilState(store, state => state.viewports.length == 1);
+
+  // Wait until the document has been loaded.
+  await waitForFrameLoad(ui, url);
+}
+
+async function testExitButton({ ui, manager }) {
+  await waitBootstrap(ui);
+
+  const exitButton = ui.toolWindow.document.getElementById("exit-button");
+
+  ok(
+    manager.isActiveForTab(ui.tab),
+    "Responsive Design Mode active for the tab"
+  );
+
+  exitButton.click();
+
+  await once(manager, "off");
+
+  ok(
+    !manager.isActiveForTab(ui.tab),
+    "Responsive Design Mode is not active for the tab"
+  );
+}