1 files changed, 20 insertions, 0 deletions
diff --git a/dom/tests/unit/test_PromiseDebugging.js b/dom/tests/unit/test_PromiseDebugging.js
new file mode 100644
index 000000000..d6c8d4306
--- /dev/null
+++ b/dom/tests/unit/test_PromiseDebugging.js
@@ -0,0 +1,20 @@
+function run_test()
+{
+    // Hack around Promise.jsm being stuck on my global
+    do_check_false(PromiseDebugging === undefined);
+    var res;
+    var p = new Promise(function(resolve, reject) { res = resolve });
+    var state = PromiseDebugging.getState(p);
+    do_check_eq(state.state, "pending");
+
+    do_test_pending();
+
+    p.then(function() {
+        var state = PromiseDebugging.getState(p);
+        do_check_eq(state.state, "fulfilled");
+        do_check_eq(state.value, 5);
+	do_test_finished();
+    });
+
+    res(5);
+}