1 files changed, 60 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webstorage/event_initstorageevent.window.js b/testing/web-platform/tests/webstorage/event_initstorageevent.window.js
new file mode 100644
index 0000000000..ac0a757021
--- /dev/null
+++ b/testing/web-platform/tests/webstorage/event_initstorageevent.window.js
@@ -0,0 +1,60 @@
+test(() => {
+    const event = new StorageEvent('storage');
+    assert_throws_js(TypeError, () => event.initStorageEvent());
+    // should be redundant, but .length can be wrong with custom bindings
+    assert_equals(event.initStorageEvent.length, 1, 'event.initStorageEvent.length');
+}, 'initStorageEvent with 0 arguments');
+
+test(() => {
+    const event = new StorageEvent('storage');
+    event.initStorageEvent('type');
+    assert_equals(event.type, 'type', 'event.type');
+    assert_equals(event.bubbles, false, 'event.bubbles');
+    assert_equals(event.cancelable, false, 'event.cancelable');
+    assert_equals(event.key, null, 'event.key');
+    assert_equals(event.oldValue, null, 'event.oldValue');
+    assert_equals(event.newValue, null, 'event.newValue');
+    assert_equals(event.url, '', 'event.url');
+    assert_equals(event.storageArea, null, 'event.storageArea');
+}, 'initStorageEvent with 1 argument');
+
+test(() => {
+    assert_not_equals(localStorage, null, 'localStorage'); // precondition
+
+    const event = new StorageEvent('storage');
+    event.initStorageEvent('type', true, true, 'key', 'oldValue', 'newValue', 'url', localStorage);
+    assert_equals(event.type, 'type', 'event.type');
+    assert_equals(event.bubbles, true, 'event.bubbles');
+    assert_equals(event.cancelable, true, 'event.cancelable');
+    assert_equals(event.key, 'key', 'event.key');
+    assert_equals(event.oldValue, 'oldValue', 'event.oldValue');
+    assert_equals(event.newValue, 'newValue', 'event.newValue');
+    assert_equals(event.url, 'url', 'event.url');
+    assert_equals(event.storageArea, localStorage, 'event.storageArea');
+}, 'initStorageEvent with 8 sensible arguments');
+
+test(() => {
+    const event = new StorageEvent('storage');
+    event.initStorageEvent(null, null, null, null, null, null, null, null);
+    assert_equals(event.type, 'null', 'event.type');
+    assert_equals(event.bubbles, false, 'event.bubbles');
+    assert_equals(event.cancelable, false, 'event.cancelable');
+    assert_equals(event.key, null, 'event.key');
+    assert_equals(event.oldValue, null, 'event.oldValue');
+    assert_equals(event.newValue, null, 'event.newValue');
+    assert_equals(event.url, 'null', 'event.url');
+    assert_equals(event.storageArea, null, 'event.storageArea');
+}, 'initStorageEvent with 8 null arguments');
+
+test(() => {
+    const event = new StorageEvent('storage');
+    event.initStorageEvent(undefined, undefined, undefined, undefined, undefined, undefined, undefined, undefined);
+    assert_equals(event.type, 'undefined', 'event.type');
+    assert_equals(event.bubbles, false, 'event.bubbles');
+    assert_equals(event.cancelable, false, 'event.cancelable');
+    assert_equals(event.key, null, 'event.key');
+    assert_equals(event.oldValue, null, 'event.oldValue');
+    assert_equals(event.newValue, null, 'event.newValue');
+    assert_equals(event.url, '', 'event.url');
+    assert_equals(event.storageArea, null, 'event.storageArea');
+}, 'initStorageEvent with 8 undefined arguments');