Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/js/xpconnect/tests/unit/test_nuke_sandbox_event_listeners.js b/js/xpconnect/tests/unit/test_nuke_sandbox_event_listeners.js
new file mode 100644
index 0000000000..2e304a8b72
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_nuke_sandbox_event_listeners.js
@@ -0,0 +1,89 @@
+/* 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/. */
+
+// See https://bugzilla.mozilla.org/show_bug.cgi?id=1273251
+
+function promiseEvent(target, event) {
+  return new Promise(resolve => {
+    target.addEventListener(event, resolve, {capture: true, once: true});
+  });
+}
+
+add_task(async function() {
+  let principal = Services.scriptSecurityManager
+    .createContentPrincipalFromOrigin("http://example.com/");
+
+  let webnav = Services.appShell.createWindowlessBrowser(false);
+
+  let docShell = webnav.docShell;
+
+  docShell.createAboutBlankContentViewer(principal, principal);
+
+  let window = webnav.document.defaultView;
+  let sandbox = Cu.Sandbox(window, {sandboxPrototype: window});
+
+  function sandboxContent() {
+    window.onload = function SandboxOnLoad() {};
+
+    window.addEventListener("FromTest", () => {
+      window.dispatchEvent(new CustomEvent("FromSandbox"));
+    }, true);
+  }
+
+  Cu.evalInSandbox(`(${sandboxContent})()`, sandbox);
+
+
+  let fromTestPromise = promiseEvent(window, "FromTest");
+  let fromSandboxPromise = promiseEvent(window, "FromSandbox");
+
+  equal(typeof window.onload, "function",
+        "window.onload should contain sandbox event listener");
+  equal(window.onload.name, "SandboxOnLoad",
+        "window.onload have the correct function name");
+
+  info("Dispatch FromTest event");
+  window.dispatchEvent(new window.CustomEvent("FromTest"));
+
+  await fromTestPromise;
+  info("Got event from test");
+
+  await fromSandboxPromise;
+  info("Got response from sandbox");
+
+
+  window.addEventListener("FromSandbox", () => {
+    ok(false, "Got unexpected reply from sandbox");
+  }, true);
+
+  info("Nuke sandbox");
+  Cu.nukeSandbox(sandbox);
+
+
+  info("Dispatch FromTest event");
+  fromTestPromise = promiseEvent(window, "FromTest");
+  window.dispatchEvent(new window.CustomEvent("FromTest"));
+  await fromTestPromise;
+  info("Got event from test");
+
+
+  // Force cycle collection, which should cause our callback reference
+  // to be dropped, and dredge up potential issues there.
+  Cu.forceGC();
+  Cu.forceCC();
+
+  ok(Cu.isDeadWrapper(window.onload),
+     "window.onload should contain a dead wrapper after sandbox is nuked");
+
+  info("Dispatch FromTest event");
+  fromTestPromise = promiseEvent(window, "FromTest");
+  window.dispatchEvent(new window.CustomEvent("FromTest"));
+  await fromTestPromise;
+  info("Got event from test");
+
+  let listeners = Services.els.getListenerInfoFor(window);
+  ok(!listeners.some(info => info.type == "FromTest"),
+     "No 'FromTest' listeners returned for nuked sandbox");
+
+  webnav.close();
+});