1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/global-lexicals-function.js b/js/src/jit-test/tests/basic/global-lexicals-function.js
new file mode 100644
index 0000000000..52b56c8bb5
--- /dev/null
+++ b/js/src/jit-test/tests/basic/global-lexicals-function.js
@@ -0,0 +1,18 @@
+class Foo {};
+let x = 1;
+const y = 2;
+var z = 3;
+
+var obj = globalLexicals();
+assertEq(Object.keys(obj).length >= 3, true);
+assertEq(obj.Foo, Foo);
+assertEq(obj.x, 1);
+assertEq(obj.y, 2);
+assertEq("z" in obj, false);
+
+assertEq("uninit" in obj, false);
+let uninit;
+
+// It's just a copy.
+obj.x = 2;
+assertEq(x, 1);