Port EventSource in Web Workers to WorkerRef,
bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1445740
gecko-commit: 83cf165404102d1d22070a2e22fe99ab2ea28b8f
gecko-integration-branch: mozilla-inbound
gecko-reviewers: smaug
diff --git a/eventsource/dedicated-worker/eventsource-close2.htm b/eventsource/dedicated-worker/eventsource-close2.htm
new file mode 100644
index 0000000..b1b74e8
--- /dev/null
+++ b/eventsource/dedicated-worker/eventsource-close2.htm
@@ -0,0 +1,29 @@
+<!--
+self.close()
+var source = new EventSource("../resources/message.py")
+postMessage(source.readyState)
+/*-->
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>dedicated worker - EventSource created after: worker.close()</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      var test = async_test();
+      test.step(function() {
+        var worker = new Worker('#')
+        worker.onmessage = function(e) {
+          test.step(function() {
+            assert_equals(e.data, EventSource.CONNECTING, 'this.readyState')
+          })
+          test.done()
+        }
+      })
+    </script>
+  </body>
+</html>
+<!--*/ //-->