[inspector] added test infrastructure and test for es6 modules

test/inspector/runtime/es6-module.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.
+
+print('Checks basic ES6 modules support.');
+
+var module1 = `
+export function foo() {
+  console.log('module1');
+  return 42;
+}
+export let a1 = 1`;
+
+var module2 = `
+export function foo() {
+  console.log('module2');
+  return 239;
+}
+export let a2 = 2`;
+
+var module3 = `
+import { foo as foo1 } from 'module1';
+import { foo as foo2 } from 'module2';
+console.log(foo1());
+console.log(foo2());
+import { a1 } from 'module1';
+import { a2 } from 'module2';
+debugger;
+`;
+
+var module4 = '}';
+
+InspectorTest.setupScriptMap();
+// We get scriptParsed events for modules ..
+Protocol.Debugger.onScriptParsed(message => {
+  if (message.params.url === 'wait-pending-tasks.js') return;
+  InspectorTest.logMessage(message);
+});
+// .. scriptFailed to parse for modules with syntax error ..
+Protocol.Debugger.onScriptFailedToParse(InspectorTest.logMessage);
+// .. API messages from modules contain correct stack trace ..
+Protocol.Runtime.onConsoleAPICalled(message => {
+  InspectorTest.log(`console.log(${message.params.args[0].value})`);
+  InspectorTest.logCallFrames(message.params.stackTrace.callFrames);
+  InspectorTest.log('');
+});
+// .. we could break inside module and scope contains correct list of variables ..
+Protocol.Debugger.onPaused(message => {
+  InspectorTest.logMessage(message);
+  Protocol.Runtime.getProperties({ objectId: message.params.callFrames[0].scopeChain[0].object.objectId})
+    .then(InspectorTest.logMessage)
+    .then(() => Protocol.Debugger.resume());
+});
+// .. we process uncaught errors from modules correctly.
+Protocol.Runtime.onExceptionThrown(InspectorTest.logMessage);
+
+Protocol.Runtime.enable();
+Protocol.Debugger.enable()
+  .then(() => InspectorTest.addModule(module1, "module1"))
+  .then(() => InspectorTest.addModule(module2, "module2"))
+  .then(() => InspectorTest.addModule(module3, "module3"))
+  .then(() => InspectorTest.addModule(module4, "module4"))
+  .then(() => InspectorTest.waitPendingTasks())
+  .then(InspectorTest.completeTest);