import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

testing/mochitest/tests/browser/browser_add_task.js

@@ -0,0 +1,31 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var test1Complete = false;
+var test2Complete = false;
+
+function executeWithTimeout() {
+  return new Promise(resolve =>
+    executeSoon(function() {
+      ok(true, "we get here after a timeout");
+      resolve();
+    })
+  );
+}
+
+add_task(function* asyncTest_no1() {
+  yield executeWithTimeout();
+  test1Complete = true;
+});
+
+add_task(function* asyncTest_no2() {
+  yield executeWithTimeout();
+  test2Complete = true;
+});
+
+add_task(function() {
+  ok(test1Complete, "We have been through test 1");
+  ok(test2Complete, "We have been through test 2");
+});