1 files changed, 38 insertions, 0 deletions
diff --git a/dom/ipc/tests/browser_very_fission.js b/dom/ipc/tests/browser_very_fission.js
new file mode 100644
index 0000000000..582fe00133
--- /dev/null
+++ b/dom/ipc/tests/browser_very_fission.js
@@ -0,0 +1,38 @@
+/* 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/. */
+
+"use strict";
+
+// This test creates a large number of content processes as a
+// regression test for bug 1635451.
+
+const TEST_PAGE =
+  "http://mochi.test:8888/browser/dom/ipc/tests/file_dummy.html";
+
+const NUM_TABS = 256;
+
+add_task(async () => {
+  let promises = [];
+  for (let i = 0; i < NUM_TABS; ++i) {
+    promises.push(
+      BrowserTestUtils.openNewForegroundTab({
+        gBrowser,
+        opening: TEST_PAGE,
+        waitForLoad: true,
+        forceNewProcess: true,
+      })
+    );
+  }
+
+  let tabs = [];
+  for (const p of promises) {
+    tabs.push(await p);
+  }
+
+  ok(true, "All of the tabs loaded");
+
+  for (const t of tabs) {
+    BrowserTestUtils.removeTab(t);
+  }
+});