1 files changed, 68 insertions, 0 deletions
diff --git a/browser/components/downloads/test/browser/browser_first_download_panel.js b/browser/components/downloads/test/browser/browser_first_download_panel.js
new file mode 100644
index 0000000000..1beb33402a
--- /dev/null
+++ b/browser/components/downloads/test/browser/browser_first_download_panel.js
@@ -0,0 +1,68 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable mozilla/no-arbitrary-setTimeout */
+
+/**
+ * Make sure the downloads panel only opens automatically on the first
+ * download it notices. All subsequent downloads, even across sessions, should
+ * not open the panel automatically.
+ */
+add_task(async function test_first_download_panel() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.download.autohideButton", false]],
+  });
+  await promiseButtonShown("downloads-button");
+  // Clear the download panel has shown preference first as this test is used to
+  // verify this preference's behaviour.
+  let oldPrefValue = Services.prefs.getBoolPref("browser.download.panel.shown");
+  Services.prefs.setBoolPref("browser.download.panel.shown", false);
+
+  registerCleanupFunction(async function () {
+    // Clean up when the test finishes.
+    await task_resetState();
+
+    // Set the preference instead of clearing it afterwards to ensure the
+    // right value is used no matter what the default was. This ensures the
+    // panel doesn't appear and affect other tests.
+    Services.prefs.setBoolPref("browser.download.panel.shown", oldPrefValue);
+  });
+
+  // Ensure that state is reset in case previous tests didn't finish.
+  await task_resetState();
+
+  // With this set to false, we should automatically open the panel the first
+  // time a download is started.
+  DownloadsCommon.getData(window).panelHasShownBefore = false;
+
+  info("waiting for panel open");
+  let promise = promisePanelOpened();
+  DownloadsCommon.getData(window)._notifyDownloadEvent("start");
+  await promise;
+
+  // If we got here, that means the panel opened.
+  DownloadsPanel.hidePanel();
+
+  ok(
+    DownloadsCommon.getData(window).panelHasShownBefore,
+    "Should have recorded that the panel was opened on a download."
+  );
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.download.alwaysOpenPanel", false]],
+  });
+  // Next, make sure that if we start another download, we don't open the
+  // panel automatically.
+  let originalOnPopupShown = DownloadsPanel.onPopupShown;
+  DownloadsPanel.onPopupShown = function () {
+    originalOnPopupShown.apply(this, arguments);
+    ok(false, "Should not have opened the downloads panel.");
+  };
+
+  DownloadsCommon.getData(window)._notifyDownloadEvent("start");
+
+  // Wait 2 seconds to ensure that the panel does not open.
+  await new Promise(resolve => setTimeout(resolve, 2000));
+  DownloadsPanel.onPopupShown = originalOnPopupShown;
+});