import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/shared/tests/unit/test_executeSoon.js

@@ -0,0 +1,48 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Client request stacks should span the entire process from before making the
+ * request to handling the reply from the server.  The server frames are not
+ * included, nor can they be in most cases, since the server can be a remote
+ * device.
+ */
+
+var { executeSoon } = require("devtools/shared/DevToolsUtils");
+var promise = require("promise");
+var defer = require("devtools/shared/defer");
+var Services = require("Services");
+
+var asyncStackEnabled =
+  Services.prefs.getBoolPref("javascript.options.asyncstack");
+
+do_register_cleanup(() => {
+  Services.prefs.setBoolPref("javascript.options.asyncstack",
+                             asyncStackEnabled);
+});
+
+add_task(function* () {
+  Services.prefs.setBoolPref("javascript.options.asyncstack", true);
+
+  yield waitForTick();
+
+  let stack = Components.stack;
+  while (stack) {
+    do_print(stack.name);
+    if (stack.name == "waitForTick") {
+      // Reached back to outer function before executeSoon
+      ok(true, "Complete stack");
+      return;
+    }
+    stack = stack.asyncCaller || stack.caller;
+  }
+  ok(false, "Incomplete stack");
+});
+
+function waitForTick() {
+  let deferred = defer();
+  executeSoon(deferred.resolve);
+  return deferred.promise;
+}