1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/deleteProperty/trap-is-undefined-strict-strict.js b/js/src/tests/test262/built-ins/Proxy/deleteProperty/trap-is-undefined-strict-strict.js
new file mode 100644
index 0000000000..39195e7b89
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/deleteProperty/trap-is-undefined-strict-strict.js
@@ -0,0 +1,34 @@
+'use strict';
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 9.5.10
+description: >
+    [[Delete]] (P)
+
+    8. If trap is undefined, then Return target.[[Delete]](P).
+flags: [onlyStrict]
+features: [Proxy, Reflect]
+---*/
+
+var target = {
+  attr: 1
+};
+var p = new Proxy(target, {});
+
+assert.sameValue(delete p.attr, true);
+assert.sameValue(delete p.notThere, true);
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(target, "attr"),
+  undefined
+);
+
+Object.defineProperty(target, "attr", {
+  configurable: false,
+  enumerable: true,
+  value: 1
+});
+
+assert.sameValue(Reflect.deleteProperty(p, "attr"), false);
+
+reportCompare(0, 0);