Introducing FetchEventInit Dictionary.

LayoutTests/http/tests/serviceworker/resources/interfaces-worker.js

 importScripts('interfaces.js');
 importScripts('worker-testharness.js');
 importScripts('/resources/testharness-helpers.js');
 
 var EVENT_HANDLER = 'object';
 
 test(function() {
     verify_interface('ServiceWorkerGlobalScope',
                      self,
                      {
@@ skipping 54 matching lines @@
                              addAll: 'function',
                              put: 'function',
                              delete: 'function',
                              keys: 'function'
                            });
         });
   }, 'Cache');
 
 test(function() {
     assert_equals(new ExtendableEvent('ExtendableEvent').type, 'ExtendableEvent');
+    assert_equals(new FetchEvent('FetchEvent').type, 'FetchEvent');
+    assert_equals(new FetchEvent('FetchEvent').cancelable, false);
+    assert_equals(new FetchEvent('FetchEvent').bubbles, false);
+    assert_equals(new FetchEvent('FetchEvent', {isReload : true}).isReload, true);
+    var req = new Request('http://localhost/',
+                          {method: 'POST',
+                           headers: [['Content-Type', 'Text/Html']]});
+    assert_equals(new FetchEvent('FetchEvent', {request : req, isReload : true}).request.url, 'http://localhost/');

[falken, 2015/04/20 09:15:19]

We should wrap at 80 cols: https://www.chromium.org/blink/serviceworker/testing

It's also a good idea to add a small description to the assert_equals, so if the
test fails the error log won't just be something like "Assert failed: expected
false but got true". E.g., 

assert_equals(new FetchEvent('FetchEvent').cancelable, false,
              'default FetchEvent.cancelable should be false');

[Paritosh Kumar, 2015/04/20 09:57:19]

Thanks.
Done.
Thanks. Done.
Ohh! It should be true. Thanks. Done.

   }, 'Event constructors');