1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Object-asEnvironment-01.js b/js/src/jit-test/tests/debug/Object-asEnvironment-01.js
new file mode 100644
index 0000000000..39bfe4dabf
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Object-asEnvironment-01.js
@@ -0,0 +1,15 @@
+// Tests D.O.asEnvironment() returning the global lexical scope.
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger;
+var gw = dbg.addDebuggee(g);
+
+g.evaluate(`
+  var x = 42;
+  let y = "foo"
+`);
+
+var globalLexical = gw.asEnvironment();
+assertEq(globalLexical.names().length, 1);
+assertEq(globalLexical.getVariable("y"), "foo");
+assertEq(globalLexical.parent.getVariable("x"), 42);