[inspector] added reconnect method for tests

test/inspector/runtime/runtime-restore.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.v8
+
+InspectorTest.log('Checks that Runtime agent correctly restore its state.');
+
+InspectorTest.addScript(`
+var formatter = {
+    header: function(x)
+    {
+        return ["span", {}, "Header formatted ", x.name];
+    },
+
+    hasBody: function(x)
+    {
+        return true;
+    },
+
+    body: function(x)
+    {
+        return ["span", {}, "Body formatted ", x.name]
+    }
+};
+
+devtoolsFormatters = [ formatter ];
+
+//# sourceURL=test.js`)
+
+InspectorTest.runTestSuite([
+  function testExecutionContextsNotificationsOnRestore(next) {
+    Protocol.Runtime.onExecutionContextsCleared(InspectorTest.logMessage);

[dgozman, 2017/02/28 19:46:40]

Future idea: automatic way to remove all listeners at the end of the test. Maybe
even do that in runTestSuite.

+    Protocol.Runtime.onExecutionContextCreated(InspectorTest.logMessage);
+    Protocol.Runtime.onExecutionContextDestroyed(InspectorTest.logMessage);
+    Protocol.Runtime.enable()
+      .then(reconnect)
+      .then(Protocol.Runtime.disable)
+      .then(() => {
+        Protocol.Runtime.onExecutionContextsCleared(null);
+        Protocol.Runtime.onExecutionContextCreated(null);
+        Protocol.Runtime.onExecutionContextDestroyed(null);
+        next()
+      });
+  },
+
+  function testConsoleAPICalledAfterRestore(next) {
+    Protocol.Runtime.onConsoleAPICalled(InspectorTest.logMessage);
+    Protocol.Runtime.enable()
+      .then(reconnect)
+      .then(() => Protocol.Runtime.evaluate({ expression: 'console.log(42);' }))
+      .then(Protocol.Runtime.disable)
+      .then(() => {
+        Protocol.Runtime.onConsoleAPICalled(null);
+        next();
+      });
+  },
+
+  function testSetCustomObjectFormatterEnabled(next) {
+    Protocol.Runtime.onConsoleAPICalled(InspectorTest.logMessage);
+    // cleanup console message storage
+    reconnect();
+    Protocol.Runtime.enable()
+      .then(() => Protocol.Runtime.setCustomObjectFormatterEnabled({ enabled: true }))
+      .then(reconnect)
+      .then(() => Protocol.Runtime.evaluate({ expression: 'console.log({ name: 42 })'}))
+      .then(InspectorTest.logMessage)
+      .then(Protocol.Runtime.disable)
+      .then(() => {
+        Protocol.Runtime.onConsoleAPICalled(null);
+        next();
+      });
+  },
+]);
+
+function reconnect() {
+  InspectorTest.logMessage('will reconnect..');
+  utils.reconnect();
+}