1 files changed, 77 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webstorage/event_constructor.window.js b/testing/web-platform/tests/webstorage/event_constructor.window.js
new file mode 100644
index 0000000000..13f4ca5e97
--- /dev/null
+++ b/testing/web-platform/tests/webstorage/event_constructor.window.js
@@ -0,0 +1,77 @@
+test(function() {
+    assert_throws_js(
+        TypeError,
+        () => StorageEvent(""),
+        "Calling StorageEvent constructor without 'new' must throw"
+    );
+}, "StorageEvent constructor called as normal function");
+
+test(function() {
+    assert_throws_js(TypeError, () => new StorageEvent());
+    // should be redundant, but .length can be wrong with custom bindings
+    assert_equals(StorageEvent.length, 1, 'StorageEvent.length');
+}, 'constructor with no arguments');
+
+test(function() {
+    var event = new StorageEvent('type');
+    assert_equals(event.type, 'type', 'type');
+    assert_equals(event.key, null, 'key');
+    assert_equals(event.oldValue, null, 'oldValue');
+    assert_equals(event.newValue, null, 'newValue');
+    assert_equals(event.url, '', 'url');
+    assert_equals(event.storageArea, null, 'storageArea');
+}, 'constructor with just type argument');
+
+test(function() {
+    assert_not_equals(localStorage, null, 'localStorage'); // precondition
+
+    var event = new StorageEvent('storage', {
+        bubbles: true,
+        cancelable: true,
+        key: 'key',
+        oldValue: 'oldValue',
+        newValue: 'newValue',
+        url: 'url', // not an absolute URL to ensure it isn't resolved
+        storageArea: localStorage
+    });
+    assert_equals(event.type, 'storage', 'type');
+    assert_equals(event.bubbles, true, 'bubbles');
+    assert_equals(event.cancelable, true, 'cancelable');
+    assert_equals(event.key, 'key', 'key');
+    assert_equals(event.oldValue, 'oldValue', 'oldValue');
+    assert_equals(event.newValue, 'newValue', 'newValue');
+    assert_equals(event.url, 'url', 'url');
+    assert_equals(event.storageArea, localStorage, 'storageArea');
+}, 'constructor with sensible type argument and members');
+
+test(function() {
+    var event = new StorageEvent(null, {
+        key: null,
+        oldValue: null,
+        newValue: null,
+        url: null,
+        storageArea: null
+    });
+    assert_equals(event.type, 'null', 'type');
+    assert_equals(event.key, null, 'key');
+    assert_equals(event.oldValue, null, 'oldValue');
+    assert_equals(event.newValue, null, 'newValue');
+    assert_equals(event.url, 'null', 'url');
+    assert_equals(event.storageArea, null, 'storageArea');
+}, 'constructor with null type argument and members');
+
+test(function() {
+    var event = new StorageEvent(undefined, {
+        key: undefined,
+        oldValue: undefined,
+        newValue: undefined,
+        url: undefined,
+        storageArea: undefined
+    });
+    assert_equals(event.type, 'undefined', 'type');
+    assert_equals(event.key, null, 'key');
+    assert_equals(event.oldValue, null, 'oldValue');
+    assert_equals(event.newValue, null, 'newValue');
+    assert_equals(event.url, '', 'url'); // not 'undefined'!
+    assert_equals(event.storageArea, null, 'storageArea');
+}, 'constructor with undefined type argument and members');