1 files changed, 85 insertions, 0 deletions
diff --git a/uriloader/exthandler/tests/mochitest/browser_web_handler_app_pinned_tab.js b/uriloader/exthandler/tests/mochitest/browser_web_handler_app_pinned_tab.js
new file mode 100644
index 0000000000..a9d4803fca
--- /dev/null
+++ b/uriloader/exthandler/tests/mochitest/browser_web_handler_app_pinned_tab.js
@@ -0,0 +1,85 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+ChromeUtils.defineESModuleGetters(this, {
+  UrlbarTestUtils: "resource://testing-common/UrlbarTestUtils.sys.mjs",
+});
+
+let testURL =
+  "http://mochi.test:8888/browser/" +
+  "uriloader/exthandler/tests/mochitest/mailto.html";
+
+XPCOMUtils.defineLazyServiceGetter(
+  this,
+  "gExternalProtocolService",
+  "@mozilla.org/uriloader/external-protocol-service;1",
+  "nsIExternalProtocolService"
+);
+XPCOMUtils.defineLazyServiceGetter(
+  this,
+  "gHandlerService",
+  "@mozilla.org/uriloader/handler-service;1",
+  "nsIHandlerService"
+);
+
+let prevAlwaysAskBeforeHandling;
+let prevPreferredAction;
+let prevPreferredApplicationHandler;
+
+add_setup(async function () {
+  let handler = gExternalProtocolService.getProtocolHandlerInfo("mailto", {});
+
+  // Create a fake mail handler
+  const APP_NAME = "ExMail";
+  const HANDLER_URL = "https://example.com/?extsrc=mailto&url=%s";
+  let app = Cc["@mozilla.org/uriloader/web-handler-app;1"].createInstance(
+    Ci.nsIWebHandlerApp
+  );
+  app.uriTemplate = HANDLER_URL;
+  app.name = APP_NAME;
+
+  // Store defaults
+  prevAlwaysAskBeforeHandling = handler.alwaysAskBeforeHandling;
+  prevPreferredAction = handler.preferredAction;
+  prevPreferredApplicationHandler = handler.preferredApplicationHandler;
+
+  // Set the fake app as default
+  handler.alwaysAskBeforeHandling = false;
+  handler.preferredAction = Ci.nsIHandlerInfo.useHelperApp;
+  handler.preferredApplicationHandler = app;
+  gHandlerService.store(handler);
+});
+
+registerCleanupFunction(async function () {
+  let handler = gExternalProtocolService.getProtocolHandlerInfo("mailto", {});
+  handler.alwaysAskBeforeHandling = prevAlwaysAskBeforeHandling;
+  handler.preferredAction = prevPreferredAction;
+  handler.preferredApplicationHandler = prevPreferredApplicationHandler;
+  gHandlerService.store(handler);
+});
+
+add_task(async function () {
+  const expectedURL =
+    "https://example.com/?extsrc=mailto&url=mailto%3Amail%40example.com";
+
+  // Load a page with mailto handler.
+  let browser = gBrowser.selectedBrowser;
+  BrowserTestUtils.startLoadingURIString(browser, testURL);
+  await BrowserTestUtils.browserLoaded(browser, false, testURL);
+
+  // Pin as an app tab
+  gBrowser.pinTab(gBrowser.selectedTab);
+
+  // Click the link and check the new tab is correct
+  let promiseTabOpened = BrowserTestUtils.waitForNewTab(gBrowser, expectedURL);
+  await BrowserTestUtils.synthesizeMouseAtCenter("#link", {}, browser);
+  let tab = await promiseTabOpened;
+  is(
+    gURLBar.value,
+    UrlbarTestUtils.trimURL(expectedURL),
+    "the mailto web handler is opened in a new tab"
+  );
+  BrowserTestUtils.removeTab(tab);
+});