1 files changed, 38 insertions, 0 deletions
diff --git a/dom/url/tests/test_bug883784.jsm b/dom/url/tests/test_bug883784.jsm
new file mode 100644
index 0000000000..1790007680
--- /dev/null
+++ b/dom/url/tests/test_bug883784.jsm
@@ -0,0 +1,38 @@
+var EXPORTED_SYMBOLS = ["Test"];
+
+var Test = {
+  start(ok, is, finish) {
+    let worker = new ChromeWorker("jsm_url_worker.js");
+    worker.onmessage = function (event) {
+      if (event.data.type == "status") {
+        ok(event.data.status, event.data.msg);
+      } else if (event.data.type == "url") {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", event.data.url, false);
+        xhr.onreadystatechange = function () {
+          if (xhr.readyState == 4) {
+            ok(true, "Blob readable!");
+            URL.revokeObjectURL(event.data.url);
+            finish();
+          }
+        };
+        xhr.onerror = function () {
+          ok(false, "Blob unreadable, should not happen!");
+          URL.revokeObjectURL(event.data.url);
+          finish();
+        };
+        xhr.send();
+      }
+    };
+
+    var self = this;
+    worker.onerror = function (event) {
+      is(event.target, worker);
+      ok(false, "Worker had an error: " + event.data);
+      self.worker.terminate();
+      finish();
+    };
+
+    worker.postMessage(0);
+  },
+};