1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/with/unscopables-not-referenced-for-undef.js b/js/src/tests/test262/language/statements/with/unscopables-not-referenced-for-undef.js
new file mode 100644
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+++ b/js/src/tests/test262/language/statements/with/unscopables-not-referenced-for-undef.js
@@ -0,0 +1,47 @@
+// Copyright 2015 Mike Pennisi. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-getidentifierreference
+es6id: 8.1.2.1
+description: >
+  `Symbol.unscopables` is not referenced when environment record does not have
+  requested property
+info: |
+  [...]
+  2. Let envRec be lex's EnvironmentRecord.
+  3. Let exists be ? envRec.HasBinding(name).
+
+  8.1.1.2.1 HasBinding
+
+  1. Let envRec be the object Environment Record for which the method was
+     invoked.
+  2. Let bindings be the binding object for envRec.
+  3. Let foundBinding be ? HasProperty(bindings, N).
+  4. If foundBinding is false, return false.
+
+  13.11.7 (The `with` Statement) Runtime Semantics: Evaluation
+
+  [...]
+  5. Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
+  [...]
+flags: [noStrict]
+features: [Symbol.unscopables]
+---*/
+
+var x = 0;
+var env = {};
+var callCount = 0;
+Object.defineProperty(env, Symbol.unscopables, {
+  get: function() {
+    callCount += 1;
+  }
+});
+
+with (env) {
+  x;
+}
+
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);