1 files changed, 51 insertions, 0 deletions
diff --git a/dom/encoding/test/worker_helper.js b/dom/encoding/test/worker_helper.js
new file mode 100644
index 0000000000..86fc51ae9b
--- /dev/null
+++ b/dom/encoding/test/worker_helper.js
@@ -0,0 +1,51 @@
+/*
+ * worker_helper.js
+ * bug 764234 tests
+ */
+function runTestInWorker(files) {
+  function workerRun() {
+    var tests = [];
+    var asserts;
+    test = function(func, msg) {
+      asserts = [];
+      tests.push({ asserts, msg });
+    };
+    assert_equals = function(result, expected, msg) {
+      asserts.push(["assert_equals", result, expected, msg]);
+    };
+    assert_true = function(condition, msg) {
+      asserts.push(["assert_true", condition, msg]);
+    };
+    assert_unreached = function(condition, msg) {
+      asserts.push(["assert_unreached", condition, msg]);
+    };
+    onmessage = function(event) {
+      importScripts.apply(self, event.data);
+      runTest();
+      postMessage(tests);
+    };
+  }
+
+  var url = URL.createObjectURL(
+    new Blob([runTest.toString(), "\n\n", "(", workerRun.toString(), ")();"])
+  );
+  var worker = new Worker(url);
+  var base = location.toString().replace(/\/[^\/]*$/, "/");
+  worker.postMessage(
+    files.map(function(f) {
+      return base + f;
+    })
+  );
+  worker.onmessage = function(event) {
+    URL.revokeObjectURL(url);
+    event.data.forEach(function(t) {
+      test(function() {
+        t.asserts.forEach(function(a) {
+          func = a.shift();
+          self[func].apply(self, a);
+        });
+      }, "worker " + t.msg);
+    });
+    done();
+  };
+}