1 files changed, 94 insertions, 0 deletions
diff --git a/devtools/shared/commands/resource/tests/browser_resources_last_private_context_exit.js b/devtools/shared/commands/resource/tests/browser_resources_last_private_context_exit.js
new file mode 100644
index 0000000000..1e2d894be3
--- /dev/null
+++ b/devtools/shared/commands/resource/tests/browser_resources_last_private_context_exit.js
@@ -0,0 +1,94 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Verify that LAST_PRIVATE_CONTEXT_EXIT fires when closing the last opened private window
+
+"use strict";
+
+const NON_PRIVATE_TEST_URI =
+  "data:text/html;charset=utf8,<!DOCTYPE html>Not private";
+const PRIVATE_TEST_URI = `data:text/html;charset=utf8,<!DOCTYPE html>Test in private windows`;
+
+add_task(async function () {
+  await pushPref("devtools.browsertoolbox.scope", "everything");
+  const { commands } = await initMultiProcessResourceCommand();
+  const { resourceCommand } = commands;
+
+  const availableResources = [];
+  await resourceCommand.watchResources(
+    [resourceCommand.TYPES.LAST_PRIVATE_CONTEXT_EXIT],
+    {
+      onAvailable(resources) {
+        availableResources.push(resources);
+      },
+    }
+  );
+  is(
+    availableResources.length,
+    0,
+    "We do not get any LAST_PRIVATE_CONTEXT_EXIT after initialization"
+  );
+
+  await addTab(NON_PRIVATE_TEST_URI);
+
+  info("Open a new private window and select the new tab opened in it");
+  const privateWindow = await BrowserTestUtils.openNewBrowserWindow({
+    private: true,
+  });
+  ok(PrivateBrowsingUtils.isWindowPrivate(privateWindow), "window is private");
+  const privateBrowser = privateWindow.gBrowser;
+  privateBrowser.selectedTab = BrowserTestUtils.addTab(
+    privateBrowser,
+    PRIVATE_TEST_URI
+  );
+
+  info("private tab opened");
+  ok(
+    PrivateBrowsingUtils.isBrowserPrivate(privateBrowser.selectedBrowser),
+    "tab window is private"
+  );
+
+  info("Open a second tab in the private window");
+  await addTab(PRIVATE_TEST_URI, { window: privateWindow });
+
+  // Let a chance to an unexpected async event to be fired
+  await wait(1000);
+
+  is(
+    availableResources.length,
+    0,
+    "We do not get any LAST_PRIVATE_CONTEXT_EXIT when opening a private window"
+  );
+
+  info("Open a second private browsing window");
+  const secondPrivateWindow = await BrowserTestUtils.openNewBrowserWindow({
+    private: true,
+  });
+
+  info("Close the second private window");
+  secondPrivateWindow.BrowserTryToCloseWindow();
+
+  // Let a chance to an unexpected async event to be fired
+  await wait(1000);
+
+  is(
+    availableResources.length,
+    0,
+    "We do not get any LAST_PRIVATE_CONTEXT_EXIT when closing the second private window only"
+  );
+
+  info(
+    "close the private window and check if LAST_PRIVATE_CONTEXT_EXIT resource is sent"
+  );
+  privateWindow.BrowserTryToCloseWindow();
+
+  info("Wait for LAST_PRIVATE_CONTEXT_EXIT");
+  await waitFor(() => availableResources.length == 1);
+  is(
+    availableResources.length,
+    1,
+    "We get one LAST_PRIVATE_CONTEXT_EXIT when closing the last opened private window"
+  );
+
+  await commands.destroy();
+});