1 files changed, 60 insertions, 0 deletions
diff --git a/browser/components/firefoxview/tests/browser/browser_tab_on_close_warning.js b/browser/components/firefoxview/tests/browser/browser_tab_on_close_warning.js
new file mode 100644
index 0000000000..9980980c29
--- /dev/null
+++ b/browser/components/firefoxview/tests/browser/browser_tab_on_close_warning.js
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+class DialogObserver {
+  constructor() {
+    this.wasOpened = false;
+    Services.obs.addObserver(this, "common-dialog-loaded");
+  }
+  cleanup() {
+    Services.obs.removeObserver(this, "common-dialog-loaded");
+  }
+  observe(win, topic) {
+    if (topic == "common-dialog-loaded") {
+      this.wasOpened = true;
+      // Close dialog.
+      win.document.querySelector("dialog").getButton("cancel").click();
+    }
+  }
+}
+
+add_task(
+  async function on_close_warning_should_not_show_for_firefox_view_tab() {
+    const dialogObserver = new DialogObserver();
+    await SpecialPowers.pushPrefEnv({
+      set: [["browser.tabs.warnOnClose", true]],
+    });
+    info("Opening window...");
+    const win = await BrowserTestUtils.openNewBrowserWindow();
+    info("Opening Firefox View tab...");
+    await openFirefoxViewTab(win);
+    info("Trigger warnAboutClosingWindow()");
+    win.BrowserTryToCloseWindow();
+    await BrowserTestUtils.closeWindow(win);
+    ok(!dialogObserver.wasOpened, "Dialog was not opened");
+    dialogObserver.cleanup();
+  }
+);
+
+add_task(
+  async function on_close_warning_should_not_show_for_firefox_view_tab_non_macos() {
+    let initialTab = gBrowser.selectedTab;
+    const dialogObserver = new DialogObserver();
+    await SpecialPowers.pushPrefEnv({
+      set: [
+        ["browser.tabs.warnOnClose", true],
+        ["browser.warnOnQuit", true],
+      ],
+    });
+    info("Opening Firefox View tab...");
+    await openFirefoxViewTab(window);
+    info('Trigger "quit-application-requested"');
+    canQuitApplication("lastwindow", "close-button");
+    ok(!dialogObserver.wasOpened, "Dialog was not opened");
+    await BrowserTestUtils.switchTab(gBrowser, initialTab);
+    closeFirefoxViewTab(window);
+    dialogObserver.cleanup();
+  }
+);