Class fields, part 3 (backends)

test/mjsunit/harmony/class-fields-attributes.js

Index: test/mjsunit/harmony/class-fields-attributes.js
diff --git a/test/mjsunit/harmony/class-fields-attributes.js b/test/mjsunit/harmony/class-fields-attributes.js
new file mode 100644
index 0000000000000000000000000000000000000000..675af20c9d1bc2f052c7bf3228d941a14d78e702
--- /dev/null
+++ b/test/mjsunit/harmony/class-fields-attributes.js
@@ -0,0 +1,26 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-class-fields
+
+{
+  class C {
+    a = 0;
+    b;
+  }
+
+  let c = new C;
+
+  var descriptor_a = Object.getOwnPropertyDescriptor(c, 'a');
+  assertEquals(0, descriptor_a.value);
+  assertTrue(descriptor_a.writable);
+  assertTrue(descriptor_a.configurable);
+  assertFalse(descriptor_a.enumerable);
+
+  var descriptor_b = Object.getOwnPropertyDescriptor(c, 'b');
+  assertEquals(undefined, descriptor_b.value);
+  assertTrue(descriptor_b.writable);
+  assertTrue(descriptor_b.configurable);
+  assertFalse(descriptor_b.enumerable);
+}