DevTools: create test infrastructure so devtools drives the test

third_party/WebKit/Source/devtools/front_end/integration_test_runner/IntegrationTestRunner.js

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * Export all public members onto TestRunner namespace so test writers have a simpler API.
+ * @fileoverview using private properties isn't a Closure violation in tests.
+ * @suppress {accessControls}
+ */
+
+/**
+ * @param {!SDK.Target} target
+ */
+IntegrationTestRunner._setupTestHelpers = function(target) {
+  TestRunner.CSSAgent = target.cssAgent();
+  TestRunner.DeviceOrientationAgent = target.deviceOrientationAgent();
+  TestRunner.DOMAgent = target.domAgent();
+  TestRunner.DOMDebuggerAgent = target.domdebuggerAgent();
+  TestRunner.DebuggerAgent = target.debuggerAgent();
+  TestRunner.EmulationAgent = target.emulationAgent();
+  TestRunner.HeapProfilerAgent = target.heapProfilerAgent();
+  TestRunner.InspectorAgent = target.inspectorAgent();
+  TestRunner.NetworkAgent = target.networkAgent();
+  TestRunner.PageAgent = target.pageAgent();
+  TestRunner.ProfilerAgent = target.profilerAgent();
+  TestRunner.RuntimeAgent = target.runtimeAgent();
+  TestRunner.TargetAgent = target.targetAgent();
+
+  TestRunner.networkManager = target.model(SDK.NetworkManager);
+  TestRunner.securityOriginManager = target.model(SDK.SecurityOriginManager);
+  TestRunner.resourceTreeModel = target.model(SDK.ResourceTreeModel);
+  TestRunner.debuggerModel = target.model(SDK.DebuggerModel);
+  TestRunner.runtimeModel = target.model(SDK.RuntimeModel);
+  TestRunner.domModel = target.model(SDK.DOMModel);
+  TestRunner.domDebuggerModel = target.model(SDK.DOMDebuggerModel);
+  TestRunner.cssModel = target.model(SDK.CSSModel);
+  TestRunner.cpuProfilerModel = target.model(SDK.CPUProfilerModel);
+  TestRunner.serviceWorkerManager = target.model(SDK.ServiceWorkerManager);
+  TestRunner.tracingManager = target.model(SDK.TracingManager);
+  TestRunner.mainTarget = target;
+};
+
+/**
+ * @param {string} code
+ * @param {!Function} callback
+ */
+TestRunner.evaluateInPage = async function(code, callback) {
+  var response = await TestRunner.RuntimeAgent.invoke_evaluate({expression: code, objectGroup: 'console'});
+  if (!response[Protocol.Error]) {
+    TestRunner.safeWrap(callback)(
+        TestRunner.runtimeModel.createRemoteObject(response.result), response.exceptionDetails);
+  }
+};
+
+/**
+ * @param {string} code
+ * @return {!Promise<!SDK.RemoteObject>}
+ */
+TestRunner.evaluateInPagePromise = function(code) {
+  return new Promise(success => TestRunner.evaluateInPage(code, success));
+};
+
+/**
+ * @param {!Function} callback
+ */
+TestRunner.deprecatedRunAfterPendingDispatches = function(callback) {
+  var targets = SDK.targetManager.targets();
+  var promises = targets.map(target => new Promise(resolve => target._deprecatedRunAfterPendingDispatches(resolve)));
+  Promise.all(promises).then(TestRunner.safeWrap(callback));
+};
+
+(function() {

[dgozman, 2017/06/19 22:55:52]

We don't use iife in frontend usually.

[chenwilliam, 2017/06/19 23:48:17]

Done.

+  /** @type {boolean} */
+  IntegrationTestRunner._startedTest = false;
+
+  /**
+   * @implements {SDK.TargetManager.Observer}
+   */
+  class TestObserver {

[dgozman, 2017/06/19 22:55:52]

IntegrationTestRunner.TargetObserver

[chenwilliam, 2017/06/19 23:48:17]

Done.

+    /**
+     * @param {!SDK.Target} target
+     * @override
+     */
+    targetAdded(target) {
+      if (IntegrationTestRunner._startedTest)
+        return;
+      IntegrationTestRunner._startedTest = true;
+      IntegrationTestRunner._setupTestHelpers(target);
+      TestRunner.executeTestScript();
+    }
+
+    /**
+     * @param {!SDK.Target} target
+     * @override
+     */
+    targetRemoved(target) {
+    }
+  }
+  SDK.targetManager.observeTargets(new TestObserver());
+})();