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+<!DOCTYPE HTML>
+<html>
+<!--
+  Test that an unresolved respondWith promise will reset the channel when
+  the service worker is terminated due to idling, and that appropriate error
+  messages are logged for both the termination of the serice worker and the
+  resetting of the channel.
+  -->
+<head>
+  <title>Test for Bug 1188545</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="error_reporting_helpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
+</head>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1188545">Mozilla Bug 118845</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+
+<script src="utils.js"></script>
+<script class="testbody" type="text/javascript">
+// (This doesn't really need to be its own task, but it allows the actual test
+// case to be self-contained.)
+add_task(function setupPrefs() {
+  return SpecialPowers.pushPrefEnv({"set": [
+    ["dom.serviceWorkers.enabled", true],
+    ["dom.serviceWorkers.testing.enabled", true],
+  ]});
+});
+
+add_task(async function grace_timeout_termination_with_interrupted_intercept() {
+  // Setup timeouts so that the service worker will go into grace timeout after
+  // a zero-length idle timeout.
+  await SpecialPowers.pushPrefEnv({"set": [
+    ["dom.serviceWorkers.idle_timeout", 0],
+    ["dom.serviceWorkers.idle_extended_timeout", 299999]]});
+
+  let registration = await navigator.serviceWorker.register(
+    "unresolved_fetch_worker.js", { scope: "./"} );
+  await waitForState(registration.installing, "activated");
+  ok(navigator.serviceWorker.controller, "Controlled"); // double check!
+
+  // We want to make sure the SW is active and processing the fetch before we
+  // try and kill it.  It sends us a message when it has done so.
+  let waitForFetchActive = new Promise((resolve) => {
+    navigator.serviceWorker.onmessage = resolve;
+  });
+
+  // Issue a fetch which the SW will respondWith() a never resolved promise.
+  // The fetch, however, will terminate when the SW is killed, so check that.
+  let hangingFetch = fetch("does_not_exist.html")
+    .then(() => { ok(false, "should have rejected "); },
+          () => { ok(true, "hung fetch terminates when worker dies"); });
+
+  await waitForFetchActive;
+
+  let expectedMessage = expect_console_message(
+    // Termination error
+    "ServiceWorkerGraceTimeoutTermination",
+    [make_absolute_url("./")],
+    // The interception failure error generated by the RespondWithHandler
+    // destructor when it notices it didn't get a response before being
+    // destroyed.  It logs via the intercepted channel nsIConsoleReportCollector
+    // that is eventually flushed to our document and its console.
+    "InterceptionFailedWithURL",
+    [make_absolute_url("does_not_exist.html")]
+  );
+
+  // Zero out the grace timeout too so the worker will get terminated after two
+  // zero-length timer firings.  Note that we need to do something to get the
+  // SW to renew its keepalive for this to actually cause the timers to be
+  // rescheduled...
+  await SpecialPowers.pushPrefEnv({"set": [
+    ["dom.serviceWorkers.idle_extended_timeout", 0]]});
+  // ...which we do by postMessaging it.
+  navigator.serviceWorker.controller.postMessage("doomity doom doom");
+
+  // Now wait for signs that the worker was terminated by the fetch failing.
+  await hangingFetch;
+
+  // The worker should now be dead and the error logged, wait/assert.
+  await wait_for_expected_message(expectedMessage);
+
+  // roll back all of our test case specific preferences and otherwise cleanup
+  await SpecialPowers.popPrefEnv();
+  await SpecialPowers.popPrefEnv();
+  await registration.unregister();
+});
+</script>
+</body>
+</html>