1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/with/unscopables-prop-get-err.js b/js/src/tests/test262/language/statements/with/unscopables-prop-get-err.js
new file mode 100644
index 0000000000..a097be2e5d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/with/unscopables-prop-get-err.js
@@ -0,0 +1,48 @@
+// 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: >
+  Behavior when accessing property of `Symbol.unscopables` property throws an
+  error
+info: |
+  [...]
+  2. Let envRec be lex's EnvironmentRecord.
+  3. Let exists be ? envRec.HasBinding(name).
+
+  8.1.1.2.1 HasBinding
+
+  [...]
+  5. If the withEnvironment flag of envRec is false, return true.
+  6. Let unscopables be ? Get(bindings, @@unscopables).
+  7. If Type(unscopables) is Object, then
+     a. Let blocked be ToBoolean(? Get(unscopables, N)).
+     b. If blocked is true, 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 env = { x: 86 };
+env[Symbol.unscopables] = {};
+
+Object.defineProperty(env[Symbol.unscopables], 'x', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+with (env) {
+  assert.throws(Test262Error, function() {
+    x;
+  });
+}
+
+reportCompare(0, 0);