Import wpt@5a1f188e0536ad023936cc62f9a00617299dc192

third_party/WebKit/LayoutTests/imported/wpt/service-workers/cache-storage/script-tests/cache-storage-keys.js

Index: third_party/WebKit/LayoutTests/imported/wpt/service-workers/cache-storage/script-tests/cache-storage-keys.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/service-workers/cache-storage/script-tests/cache-storage-keys.js b/third_party/WebKit/LayoutTests/imported/wpt/service-workers/cache-storage/script-tests/cache-storage-keys.js
new file mode 100644
index 0000000000000000000000000000000000000000..4d7bc623f00dba0c46cb3f43d8305fb7636e9930
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/wpt/service-workers/cache-storage/script-tests/cache-storage-keys.js
@@ -0,0 +1,36 @@
+if (self.importScripts) {
+    importScripts('/resources/testharness.js');
+    importScripts('../resources/testharness-helpers.js');
+    importScripts('../resources/test-helpers.js');
+}
+
+var test_cache_list =
+  ['', 'example', 'Another cache name', 'A', 'a', 'ex ample'];
+
+promise_test(function(test) {
+    return self.caches.keys()
+      .then(function(keys) {
+          assert_true(Array.isArray(keys),
+                      'CacheStorage.keys should return an Array.');
+          return Promise.all(keys.map(function(key) {
+              return self.caches.delete(key);
+            }));
+        })
+      .then(function() {
+          return Promise.all(test_cache_list.map(function(key) {
+              return self.caches.open(key);
+            }));
+        })
+
+      .then(function() { return self.caches.keys(); })
+      .then(function(keys) {
+          assert_true(Array.isArray(keys),
+                      'CacheStorage.keys should return an Array.');
+          assert_array_equals(keys,
+                              test_cache_list,
+                              'CacheStorage.keys should only return ' +
+                              'existing caches.');
+        });
+  }, 'CacheStorage keys');
+
+done();