[DevTools] New harness for inspector-protocol layout tests

third_party/WebKit/LayoutTests/inspector-protocol/worker/exception-from-worker-contains-stack.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('Tests that console message from worker contains stack trace.');
+
+  var workerRequestId = 1;
+  function sendCommandToWorker(method, params, workerId) {
+    dp.Target.sendMessageToTarget({
+      targetId: workerId,
+      message: JSON.stringify({ method: method, params: params, id: workerRequestId++ })
+    });
+  }
+
+  var waitForWorkers = 2;
+  dp.Target.onAttachedToTarget(messageObject => {
+    var workerId = messageObject['params']['targetInfo']['targetId'];
+    testRunner.log('Worker created');
+    sendCommandToWorker('Runtime.enable', {}, workerId);
+    if (!--waitForWorkers)
+      session.evaluate('worker1.postMessage(239);worker2.postMessage(42);');
+  });
+
+  var workerTerminated = false;
+  var messageReceived = false;
+  dp.Target.onReceivedMessageFromTarget(messageObject => {
+    var message = JSON.parse(messageObject['params']['message']);
+    if (message['method'] === 'Runtime.exceptionThrown') {
+      var callFrames = message.params.exceptionDetails.stackTrace ? message.params.exceptionDetails.stackTrace.callFrames : [];
+      testRunner.log(callFrames.length > 0 ? 'Message with stack trace received.' : '[FAIL] Message contains empty stack trace');
+      messageReceived = true;
+      if (messageReceived && workerTerminated)
+        testRunner.completeTest();
+    }
+  });
+
+  function onDetached(messageObject) {
+    dp.Target.offDetachedFromTarget(onDetached);
+    workerTerminated = true;
+    if (messageReceived && workerTerminated)
+      testRunner.completeTest();
+  }
+  dp.Target.onDetachedFromTarget(onDetached);
+
+  await dp.Target.setAutoAttach({autoAttach: true, waitForDebuggerOnStart: false});
+  session.evaluate(`
+    window.worker1 = new Worker('${testRunner.url('../resources/worker-with-throw.js')}');
+    window.worker1.onerror = function(e) {
+      e.preventDefault();
+      worker1.terminate();
+    }
+    window.worker2 = new Worker('${testRunner.url('../resources/worker-with-throw.js')}');
+  `);
+})