1 files changed, 64 insertions, 0 deletions
diff --git a/comm/calendar/test/browser/preferences/head.js b/comm/calendar/test/browser/preferences/head.js
new file mode 100644
index 0000000000..8d6d5d3ab5
--- /dev/null
+++ b/comm/calendar/test/browser/preferences/head.js
@@ -0,0 +1,64 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals openPreferencesTab */
+
+async function openNewPrefsTab(paneID, scrollPaneTo, otherArgs) {
+  let tabmail = document.getElementById("tabmail");
+  let prefsTabMode = tabmail.tabModes.preferencesTab;
+
+  Assert.equal(prefsTabMode.tabs.length, 0, "Prefs tab is not open");
+
+  let prefsDocument = await new Promise(resolve => {
+    Services.obs.addObserver(function documentLoaded(subject) {
+      if (subject.URL.startsWith("about:preferences")) {
+        Services.obs.removeObserver(documentLoaded, "chrome-document-loaded");
+        resolve(subject);
+      }
+    }, "chrome-document-loaded");
+    openPreferencesTab(paneID, scrollPaneTo, otherArgs);
+  });
+  Assert.ok(prefsDocument.URL.startsWith("about:preferences"), "Prefs tab is open");
+
+  prefsDocument = prefsTabMode.tabs[0].browser.contentDocument;
+  let prefsWindow = prefsDocument.ownerGlobal;
+  prefsWindow.resizeTo(screen.availWidth, screen.availHeight);
+  if (paneID) {
+    await new Promise(resolve => prefsWindow.setTimeout(resolve));
+    Assert.equal(prefsWindow.gLastCategory.category, paneID, `Selected pane is ${paneID}`);
+  } else {
+    // If we don't wait here for other scripts to run, they
+    // could be in a bad state if our test closes the tab.
+    await new Promise(resolve => prefsWindow.setTimeout(resolve));
+  }
+
+  registerCleanupOnce();
+
+  await new Promise(resolve => prefsWindow.setTimeout(resolve));
+  if (scrollPaneTo) {
+    Assert.greater(
+      prefsDocument.getElementById("preferencesContainer").scrollTop,
+      0,
+      "Prefs page did scroll when it was supposed to"
+    );
+  }
+  return { prefsDocument, prefsWindow };
+}
+
+function registerCleanupOnce() {
+  if (registerCleanupOnce.alreadyRegistered) {
+    return;
+  }
+  registerCleanupFunction(closePrefsTab);
+  registerCleanupOnce.alreadyRegistered = true;
+}
+
+async function closePrefsTab() {
+  info("Closing prefs tab");
+  let tabmail = document.getElementById("tabmail");
+  let prefsTab = tabmail.tabModes.preferencesTab.tabs[0];
+  if (prefsTab) {
+    tabmail.closeTab(prefsTab);
+  }
+}