enable coverage logging from the worker

src/environment/__tests__/ReactWebWorker-test.js

@@ -31,6 +31,8 @@ describe('ReactWebWorker', function() {
       var data = JSON.parse(e.data);
       if (data.type == 'error') {
         error = data.message + "\n" + data.stack;
+      } else if (data.type == 'log') {
+        console.log(data.message);
       } else {
         expect(data.type).toBe('done');
         done = true;
@@ -42,7 +44,7 @@ describe('ReactWebWorker', function() {
     });
     runs(function() {
       if (error) {
-        console.log(error);
+        console.error(error);
         throw new Error(error);
       }
     });

src/test/worker.js

@@ -1,6 +1,26 @@
 /* jshint worker: true */
 "use strict";
 
+if (typeof console == 'undefined') {
+  this.console = {
+    error: function(e){
+      postMessage(JSON.stringify({
+        type: 'error',
+        message: e.message,
+        stack: e.stack
+      }));
+    },
+    log: function(message){
+      postMessage(JSON.stringify({
+        type: 'log',
+        message: message
+      }));
+    }
+  }
+}
+
+console.log('worker BEGIN');
+
 // The UMD wrapper tries to store on `global` if `window` isn't available
 var global = {};
 importScripts("phantomjs-shims.js");
@@ -8,13 +28,11 @@ importScripts("phantomjs-shims.js");
 try {
   importScripts("../../build/react.js");
 } catch (e) {
-  postMessage(JSON.stringify({
-    type: 'error',
-    message: e.message,
-    stack: e.stack
-  }));
+  console.error(e);
 }
 
 postMessage(JSON.stringify({
   type: 'done'
 }));
+
+console.log('worker END');