1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-environment-04.js b/js/src/jit-test/tests/debug/Frame-environment-04.js
new file mode 100644
index 000000000..d74e9f2b9
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-environment-04.js
@@ -0,0 +1,12 @@
+// frame.environment can be called from the onEnterFrame hook.
+
+var g = newGlobal();
+g.eval("function f(x) { return 2 * x; }");
+var dbg = Debugger(g);
+var hits = 0;
+dbg.onEnterFrame = function (frame) {
+    assertEq(frame.environment.names().join(","), "arguments,x");
+    hits++;
+};
+assertEq(g.f(22), 44);
+assertEq(hits, 1);