[ServiceWorker] Tests for Cache

LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js

Index: LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js
diff --git a/LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js b/LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js
index 3d45c2270cce1988908fb58366f3f7d07a2635aa..646e08d9eae93f4a7874e1397046d42fbe4535b9 100644
--- a/LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js
+++ b/LayoutTests/http/tests/serviceworker/resources/worker-test-harness.js
@@ -102,3 +102,25 @@ function assert_promise_throws(promise, code, description) {
       assert_throws(code, function() { throw e; }, description);
     });
 }
+
+(function() {
+  var next_cache_index = 1;
+
+  // Returns a promise that resolves to a newly created Cache object. The
+  // returned Cache will be destroyed when |test| completes.
+  function create_temporary_cache(test, base_name) {

[jsbell, 2014/08/20 18:18:08]

This is great!

[asanka, 2014/08/20 21:24:58]

Thanks!

+    var uniquifier = base_name || String(++next_cache_index);
+    var cache_name = self.location.pathname + '/' + uniquifier;
+
+    test.add_cleanup(function() {
+        self.caches.delete(cache_name);
+      });
+
+    return self.caches.delete(cache_name)
+      .then(function() {
+          return self.caches.create(cache_name);
+        });
+  }
+
+  self.create_temporary_cache = create_temporary_cache;
+})();