Upload Kmake

deps/v8/test/mjsunit/es6/proxies-ownkeys-clone.js

@@ -0,0 +1,25 @@
+// Copyright 2019 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.
+
+var p = new Proxy({a: 1, b: 2}, {
+  ownKeys() { return ['a', 'b']; }
+});
+
+// clone and return a
+function f(a) {
+  var y = {...a}
+  return y;
+}
+
+// Call with different maps to force it into megamorphic state
+f({a: 1, b: 2});
+f({a1: 1, b1: 3});
+f({a2: 1, b2: 3});
+f({a3: 1, b3: 4});
+f({a4: 1, b4: 5});
+
+// Test that y was initialized correctly in the slow path
+var clone = f(p);
+assertEquals(clone.a, 1);
+assertEquals(clone.b, 2);