[DevTools] Migrate inspector-protocol/{timeline,worker} tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/resources/tracing-test.js

 // Copyright 2014 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.
 
-var evalCallbackCallId = 3;
+(function initialize_tracingHarness(testRunner, session) {
 
-initialize_tracingHarness = function()
-{
+  class TracingHelper {
+    startTracing(callback) {

[caseq, 2017/06/22 19:32:41]

nit: if you're rewriting this beyond any recognition, it would be nice to have
promises instead of callbacks ;)

[dgozman, 2017/06/22 21:48:55]

Done.

+      this.startTracingWithArguments({ "categories": "-*,disabled-by-default-devtools.timeline,devtools.timeline", "type": "", "options": "" }, callback);
+    }
 
-InspectorTest.startTracing = function(callback)
-{
-    InspectorTest.startTracingWithArguments({ "categories": "-*,disabled-by-default-devtools.timeline,devtools.timeline", "type": "", "options": "" }, callback);
-}
-
-InspectorTest.startTracingAndSaveAsStream = function(callback)
-{
-    var args = {
+    startTracingAndSaveAsStream(callback) {
+      var args = {
         "categories": "-*,disabled-by-default-devtools.timeline,devtools.timeline",
         "type": "",
         "options": "",
         "transferMode": "ReturnAsStream"
-    };
-    InspectorTest.startTracingWithArguments(args, callback);
-}
-
-InspectorTest.startTracingWithArguments = function(args, callback)
-{
-    InspectorTest.sendCommand("Tracing.start", args, onStart);
-
-    function onStart(response)
-    {
-        InspectorTest.log("Recording started");
-        callback();
-    }
-}
-
-InspectorTest.stopTracing = function(callback)
-{
-    InspectorTest.eventHandler["Tracing.tracingComplete"] = tracingComplete;
-    InspectorTest.eventHandler["Tracing.dataCollected"] = dataCollected;
-    InspectorTest.sendCommand("Tracing.end", { });
-
-    InspectorTest.devtoolsEvents = [];
-    function dataCollected(reply)
-    {
-        var allEvents = reply.params.value;
-        InspectorTest.devtoolsEvents = InspectorTest.devtoolsEvents.concat(allEvents.filter(function(e)
-        {
-            return /devtools.timeline/.test(e.cat);
-        }));
+      };
+      this.startTracingWithArguments(args, callback);
     }
 
-    function tracingComplete(event)
-    {
-        InspectorTest.log("Tracing complete");
-        InspectorTest.eventHandler["Tracing.tracingComplete"] = null;
-        InspectorTest.eventHandler["Tracing.dataCollected"] = null;
-        callback(InspectorTest.devtoolsEvents);
-    }
-}
-
-InspectorTest.stopTracingAndReturnStream = function(callback)
-{
-    InspectorTest.eventHandler["Tracing.tracingComplete"] = tracingComplete;
-    InspectorTest.eventHandler["Tracing.dataCollected"] = dataCollected;
-    InspectorTest.sendCommand("Tracing.end");
-
-    function dataCollected(reply)
-    {
-        InspectorTest.log("FAIL: dataCollected event should not be fired when returning trace as stream.");
-
+    startTracingWithArguments(args, callback) {
+      session.protocol.Tracing.start(args).then(onStart);
+      function onStart(response) {
+        testRunner.log("Recording started");
+        callback();
+      }
     }
 
-    function tracingComplete(event)
-    {
-        InspectorTest.log("Tracing complete");
-        InspectorTest.eventHandler["Tracing.tracingComplete"] = null;
-        InspectorTest.eventHandler["Tracing.dataCollected"] = null;
+    stopTracing(callback) {
+      this.devtoolsEvents = [];
+      var dataCollected = reply => {
+        var allEvents = reply.params.value;
+        this.devtoolsEvents = this.devtoolsEvents.concat(allEvents.filter(function(e) {
+          return /devtools.timeline/.test(e.cat);
+        }));
+      };
+
+      var tracingComplete = event => {
+        testRunner.log("Tracing complete");
+        session.protocol.Tracing.offTracingComplete(tracingComplete);
+        session.protocol.Tracing.offDataCollected(dataCollected);
+        callback(this.devtoolsEvents);
+      };
+
+      session.protocol.Tracing.onTracingComplete(tracingComplete);
+      session.protocol.Tracing.onDataCollected(dataCollected);
+      session.protocol.Tracing.end();
+    }
+
+    stopTracingAndReturnStream(callback) {
+      session.protocol.Tracing.onTracingComplete(tracingComplete);
+      session.protocol.Tracing.onDataCollected(dataCollected);
+      session.protocol.Tracing.end();
+
+      function dataCollected(reply) {
+        testRunner.log("FAIL: dataCollected event should not be fired when returning trace as stream.");
+      }
+
+      function tracingComplete(event) {
+        testRunner.log("Tracing complete");
+        session.protocol.Tracing.offTracingComplete(tracingComplete);
+        session.protocol.Tracing.offDataCollected(dataCollected);
         callback(event.params.stream);
+      }
     }
-}
 
-InspectorTest.retrieveStream = function(streamHandle, offset, chunkSize, callback)
-{
-    var result = "";
-    var had_eof = false;
+    retrieveStream(streamHandle, offset, chunkSize, callback) {
+      var result = "";
+      var had_eof = false;
 
-    var readArguments = { handle: streamHandle };
-    if (typeof chunkSize === "number")
+      var readArguments = { handle: streamHandle };
+      if (typeof chunkSize === "number")
         readArguments.size = chunkSize;
-    var firstReadArguments = JSON.parse(JSON.stringify(readArguments));
-    if (typeof offset === "number")
+      var firstReadArguments = JSON.parse(JSON.stringify(readArguments));
+      if (typeof offset === "number")
         firstReadArguments.offset = 0;
-    InspectorTest.sendCommandOrDie("IO.read", firstReadArguments, onChunkRead);
-    // Assure multiple in-lfight reads are fine (also, save on latencies).
-    InspectorTest.sendCommandOrDie("IO.read", readArguments, onChunkRead);
+      session.protocol.IO.read(firstReadArguments).then(message => onChunkRead(message.result));
+      // Assure multiple in-lfight reads are fine (also, save on latencies).

[caseq, 2017/06/22 19:32:41]

mind fixing my typo while you're here? ;-)

[dgozman, 2017/06/22 21:48:55]

Done.

+      session.protocol.IO.read(readArguments).then(message => onChunkRead(message.result));
 
-    function onChunkRead(response)
-    {
+      function onChunkRead(response) {
         if (had_eof)
-            return;
+          return;
         result += response.data;
         if (response.eof) {
-            // Ignore stray callbacks from proactive read requests.
-            had_eof = true;
-            callback(result);
-            return;
+          // Ignore stray callbacks from proactive read requests.
+          had_eof = true;
+          callback(result);
+          return;
         }
-        InspectorTest.sendCommandOrDie("IO.read", readArguments, onChunkRead);
+        session.protocol.IO.read(readArguments).then(message => onChunkRead(message.result));
+      }
     }
-}
 
-InspectorTest.findEvents = function(name, ph, condition)
-{
-    return InspectorTest.devtoolsEvents.filter(e => e.name === name && e.ph === ph && (!condition || condition(e)));
-}
+    findEvents(name, ph, condition) {
+      return this.devtoolsEvents.filter(e => e.name === name && e.ph === ph && (!condition || condition(e)));
+    }
 
-InspectorTest.findEvent = function(name, ph, condition)
-{
-    var events = InspectorTest.findEvents(name, ph, condition);
-    if (events.length)
+    findEvent(name, ph, condition) {
+      var events = this.findEvents(name, ph, condition);
+      if (events.length)
         return events[0];
-    throw new Error("Couldn't find event " + name + " / " + ph + "\n\n in " + JSON.stringify(InspectorTest.devtoolsEvents, null, 2));
-}
+      throw new Error("Couldn't find event " + name + " / " + ph + "\n\n in " + JSON.stringify(this.devtoolsEvents, null, 2));
+    }
 
-InspectorTest.invokeAsyncWithTracing = function(functionName, callback)
-{
-    InspectorTest.startTracing(onStart);
+    invokeAsyncWithTracing(functionName, callback) {
+      this.startTracing(async () => {
+        var data = await session.evaluateAsync(functionName + "()");
+        this.stopTracing(devtoolsEvents => callback(devtoolsEvents, data));
+      });
+    }
+  }
 
-    function onStart()
-    {
-        InspectorTest.evaluateInPageAsync(functionName + "()").then((data) => InspectorTest.stopTracing((devtoolsEvents) => callback(devtoolsEvents, data)));
-    }
-}
-
-}
+  return new TracingHelper();
+})