1 files changed, 128 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/broadcastchannel/basics.any.js b/testing/web-platform/tests/webmessaging/broadcastchannel/basics.any.js
new file mode 100644
index 0000000000..eec09d65a3
--- /dev/null
+++ b/testing/web-platform/tests/webmessaging/broadcastchannel/basics.any.js
@@ -0,0 +1,128 @@
+test(function() {
+  assert_throws_js(
+      TypeError,
+      () => BroadcastChannel(""),
+      "Calling BroadcastChannel constructor without 'new' must throw"
+    );
+}, "BroadcastChannel constructor called as normal function");
+
+async_test(t => {
+    let c1 = new BroadcastChannel('eventType');
+    let c2 = new BroadcastChannel('eventType');
+
+    c2.onmessage = t.step_func(e => {
+        assert_true(e instanceof MessageEvent);
+        assert_equals(e.target, c2);
+        assert_equals(e.type, 'message');
+        assert_equals(e.origin, location.origin, 'origin');
+        assert_equals(e.data, 'hello world');
+        assert_equals(e.source, null, 'source');
+        t.done();
+      });
+    c1.postMessage('hello world');
+  }, 'postMessage results in correct event');
+
+async_test(t => {
+    let c1 = new BroadcastChannel('order');
+    let c2 = new BroadcastChannel('order');
+    let c3 = new BroadcastChannel('order');
+
+    let events = [];
+    let doneCount = 0;
+    let handler = t.step_func(e => {
+      events.push(e);
+      if (e.data == 'done') {
+        doneCount++;
+        if (doneCount == 2) {
+          assert_equals(events.length, 6);
+          assert_equals(events[0].target, c2, 'target for event 0');
+          assert_equals(events[0].data, 'from c1');
+          assert_equals(events[1].target, c3, 'target for event 1');
+          assert_equals(events[1].data, 'from c1');
+          assert_equals(events[2].target, c1, 'target for event 2');
+          assert_equals(events[2].data, 'from c3');
+          assert_equals(events[3].target, c2, 'target for event 3');
+          assert_equals(events[3].data, 'from c3');
+          assert_equals(events[4].target, c1, 'target for event 4');
+          assert_equals(events[4].data, 'done');
+          assert_equals(events[5].target, c3, 'target for event 5');
+          assert_equals(events[5].data, 'done');
+          t.done();
+        }
+      }
+    });
+    c1.onmessage = handler;
+    c2.onmessage = handler;
+    c3.onmessage = handler;
+
+    c1.postMessage('from c1');
+    c3.postMessage('from c3');
+    c2.postMessage('done');
+  }, 'messages are delivered in port creation order');
+
+async_test(t => {
+    let c1 = new BroadcastChannel('closed');
+    let c2 = new BroadcastChannel('closed');
+    let c3 = new BroadcastChannel('closed');
+
+    c2.onmessage = t.unreached_func();
+    c2.close();
+    c3.onmessage = t.step_func(() => t.done());
+    c1.postMessage('test');
+  }, 'messages aren\'t delivered to a closed port');
+
+ async_test(t => {
+    let c1 = new BroadcastChannel('closed');
+    let c2 = new BroadcastChannel('closed');
+    let c3 = new BroadcastChannel('closed');
+
+    c2.onmessage = t.unreached_func();
+    c3.onmessage = t.step_func(() => t.done());
+    c1.postMessage('test');
+    c2.close();
+}, 'messages aren\'t delivered to a port closed after calling postMessage.');
+
+async_test(t => {
+    let c1 = new BroadcastChannel('create-in-onmessage');
+    let c2 = new BroadcastChannel('create-in-onmessage');
+
+    c2.onmessage = t.step_func(e => {
+        assert_equals(e.data, 'first');
+        c2.close();
+        let c3 = new BroadcastChannel('create-in-onmessage');
+        c3.onmessage = t.step_func(event => {
+            assert_equals(event.data, 'done');
+            t.done();
+          });
+        c1.postMessage('done');
+      });
+    c1.postMessage('first');
+    c2.postMessage('second');
+  }, 'closing and creating channels during message delivery works correctly');
+
+async_test(t => {
+    let c1 = new BroadcastChannel('close-in-onmessage');
+    let c2 = new BroadcastChannel('close-in-onmessage');
+    let c3 = new BroadcastChannel('close-in-onmessage');
+    let events = [];
+    c1.onmessage = e => events.push('c1: ' + e.data);
+    c2.onmessage = e => events.push('c2: ' + e.data);
+    c3.onmessage = e => events.push('c3: ' + e.data);
+
+    // c2 closes itself when it receives the first message
+    c2.addEventListener('message', e => {
+        c2.close();
+      });
+
+    c3.addEventListener('message', t.step_func(e => {
+        if (e.data == 'done') {
+          assert_array_equals(events, [
+              'c2: first',
+              'c3: first',
+              'c3: done']);
+          t.done();
+        }
+      }));
+    c1.postMessage('first');
+    c1.postMessage('done');
+  }, 'Closing a channel in onmessage prevents already queued tasks from firing onmessage events');