1 files changed, 21 insertions, 0 deletions
diff --git a/dom/tests/unit/test_PromiseDebugging.js b/dom/tests/unit/test_PromiseDebugging.js
new file mode 100644
index 0000000000..2262d60d61
--- /dev/null
+++ b/dom/tests/unit/test_PromiseDebugging.js
@@ -0,0 +1,21 @@
+function run_test() {
+  // Hack around Promise.jsm being stuck on my global
+  Assert.equal(false, PromiseDebugging === undefined);
+  var res;
+  var p = new Promise(function (resolve, reject) {
+    res = resolve;
+  });
+  var state = PromiseDebugging.getState(p);
+  Assert.equal(state.state, "pending");
+
+  do_test_pending();
+
+  p.then(function () {
+    var state2 = PromiseDebugging.getState(p);
+    Assert.equal(state2.state, "fulfilled");
+    Assert.equal(state2.value, 5);
+    do_test_finished();
+  });
+
+  res(5);
+}