1 files changed, 18 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug845201.js b/js/xpconnect/tests/unit/test_bug845201.js
new file mode 100644
index 0000000000..74253ccaed
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug845201.js
@@ -0,0 +1,18 @@
+function sbTest() {
+  var threw = false;
+  try {
+    for (var x in Components) { }
+    ok(false, "Shouldn't be able to enumerate Components");
+  } catch(e) {
+    ok(true, "Threw appropriately");
+    threw = true;
+  }
+  ok(threw, "Shouldn't have thrown uncatchable exception");
+}
+
+function run_test() {
+  var sb = Cu.Sandbox('http://www.example.com', { wantComponents: true });
+  sb.ok = ok;
+  Cu.evalInSandbox(sbTest.toSource(), sb);
+  Cu.evalInSandbox('sbTest();', sb);
+}