[ServiceWorker] Tests for Cache

LayoutTests/http/tests/serviceworker/resources/cache-put-test-worker.js

+importScripts('worker-test-harness.js');
+
+promise_test(function(t) {
+    var request = new Request('http://example.com/foo', {method: 'GET'});
+    var response = new Response(
+                                'Hello, world!', {

[jsbell, 2014/08/01 00:02:25]

This line break is weird.

[asanka, 2014/08/13 03:30:04]

Indeed. Fixed.

+        status: 200,
+        statusText: 'OK',
+        headers: [['Content-Type', 'text/plain']]
+      });
+    return new Cache().put(request, response)
+      .then(t.step_func(function(result) {
+          assert_equals(result,
+                        response,
+                        'Cache.put should resolve with the response ' +
+                        'parameter.');
+        }));
+  }, 'Cache.put with a valid request');
+
+promise_test(function(t) {
+    var request = new Request('http://example.com/foo', {method: 'HEAD'});
+    var response = new Response('Hello, world!', {
+        status: 200,
+        statusText: 'OK',
+        headers: [['Content-Type', 'text/plain']]
+      });
+    return new Cache().put(request, response)
+      .then(t.unreached_func('Cache.put should not accept non-GET requests.'))
+      .catch(t.step_func(function(e) {
+          assert_true(e instanceof TypeError,
+                      'Cache.put should throw a TypeError for non-GET ' +
+                      'requests');
+        }));
+  }, 'Cache.put with a non-GET request');
+
+promise_test(function(t) {
+    var request = new Request('http://example.com/foo', {method: 'HEAD'});
+    return new Cache().put(request, null)
+      .then(t.unreached_func('Cache.put should not accept empty responses.'))
+      .catch(t.step_func(function(e) {
+          assert_true(e instanceof TypeError,
+                      'Cache.put should throw a TypeError for an empty ' +
+                      'response');
+        }));
+  }, 'Cache.put with an empty response');