1 files changed, 7 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_promise.js b/js/xpconnect/tests/unit/test_promise.js
new file mode 100644
index 0000000000..305e016fb5
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_promise.js
@@ -0,0 +1,7 @@
+function run_test() {
+  sb = new Cu.Sandbox('http://www.example.com');
+  sb.equal = equal;
+  Cu.evalInSandbox('equal(typeof new Promise(function(resolve){resolve();}), "object");',
+                   sb);
+  Assert.equal(typeof new Promise(function(resolve){resolve();}), "object");
+}