1 files changed, 9 insertions, 0 deletions
diff --git a/testing/mochitest/tests/browser/browser_fail_timeout.js b/testing/mochitest/tests/browser/browser_fail_timeout.js
new file mode 100644
index 0000000000..44030a00f0
--- /dev/null
+++ b/testing/mochitest/tests/browser/browser_fail_timeout.js
@@ -0,0 +1,9 @@
+function test() {
+  function end() {
+    ok(false, "should have timed out");
+    finish();
+  }
+  waitForExplicitFinish();
+  // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+  setTimeout(end, 40000);
+}