1 files changed, 134 insertions, 0 deletions
diff --git a/dom/workers/test/test_suspend.html b/dom/workers/test/test_suspend.html
new file mode 100644
index 0000000000..ef003ac3e4
--- /dev/null
+++ b/dom/workers/test/test_suspend.html
@@ -0,0 +1,134 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Test for DOM Worker Threads</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+  SimpleTest.waitForExplicitFinish();
+
+  const BLANK_URI = location.href.replace("test_suspend.html", "blank.html").split("?")[0];
+
+  var lastCount;
+
+  var suspended = false;
+  var resumed = false;
+  var finished = false;
+
+  var interval;
+  var oldMessageCount;
+  var waitCount = 0;
+
+  var testWin = window.open("suspend_window.html", "testWin");
+  testWin.onload = testWinLoaded;
+
+  window.addEventListener("message", msg => {
+    if (suspended) {
+      badOnloadCallback();
+    } else {
+      suspendCallback();
+    }
+  })
+
+  function finishTest() {
+    if (finished) {
+      return;
+    }
+    finished = true;
+    testWin.terminateWorker();
+    testWin.close();
+    SimpleTest.finish();
+  }
+
+  function waitInterval() {
+    if (finished) {
+      return;
+    }
+    is(testWin.location.href, BLANK_URI, "Wrong url!");
+    is(suspended, true, "Not suspended?");
+    is(resumed, false, "Already resumed?!");
+    is(lastCount, oldMessageCount, "Received a message while suspended!");
+    if (++waitCount == 5) {
+      clearInterval(interval);
+      resumed = true;
+      testWin.history.back();
+    }
+  }
+
+  function badOnloadCallback() {
+    if (finished) {
+      return;
+    }
+    ok(false, "We don't want suspend_window.html to fire a new load event, we want it to come out of the bfcache!");
+    finishTest();
+  }
+
+  function suspendCallback() {
+    if (finished) {
+      return;
+    }
+    is(testWin.location.href, BLANK_URI, "Wrong url!");
+    is(suspended, false, "Already suspended?");
+    is(resumed, false, "Already resumed?");
+    suspended = true;
+    oldMessageCount = lastCount;
+    interval = setInterval(waitInterval, 1000);
+  }
+
+  function messageCallback(data) {
+    if (finished) {
+      return;
+    }
+
+    if (!suspended) {
+      ok(lastCount === undefined || lastCount == data - 1,
+         "Got good data, lastCount = " + lastCount + ", data = " + data);
+      lastCount = data;
+      if (lastCount == 25) {
+        testWin.location = "blank.html";
+        // We want suspend_window.html to go into bfcache, so we need to flush
+        // out all pending notifications. Otherwise, if they're flushed too
+        // late, they could kick us out of the bfcache again.
+        testWin.document.body.offsetTop;
+      }
+      return;
+    }
+
+    var newLocation = location.href.replace("test_suspend.html",
+                                            "suspend_window.html");
+    is(testWin.location.href, newLocation.split("?")[0], "Wrong url!");
+    is(resumed, true, "Got message before resumed!");
+    is(lastCount, data - 1, "Missed a message, suspend failed!");
+    finishTest();
+  }
+
+  function errorCallback(data) {
+    if (finished) {
+      return;
+    }
+    ok(false, "testWin had an error: '" + data + "'");
+    finishTest();
+  }
+
+  function testWinLoaded() {
+    if (finished) {
+      return;
+    }
+    testWin.startWorker(messageCallback, errorCallback);
+  }
+
+</script>
+</pre>
+</body>
+</html>