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diff --git a/deps/v8/test/mjsunit/es6/proxies-hash.js b/deps/v8/test/mjsunit/es6/proxies-hash.js
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+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// Helper.
+
+function TestWithProxies(test, construct, handler) {
+  test(construct, handler, function(h) { return new Proxy({}, h) })
+  // TODO(cbruni): Adapt and enable once we have [[Call]] working.
+  // test(construct, handler, function(h) {
+  //  return Proxy.createFunction(h, function() {})
+  // })
+}
+
+
+// Sets.
+
+function TestSet(construct, fix) {
+  TestWithProxies(TestSet2, construct, fix)
+}
+
+function TestSet2(construct, fix, create) {
+  var handler = {fix: function() { return {} }}
+  var p1 = create(handler)
+  var p2 = create(handler)
+  var p3 = create(handler)
+  fix(p3)
+
+  var s = new construct();
+  s.add(p1);
+  s.add(p2);
+  assertTrue(s.has(p1));
+  assertTrue(s.has(p2));
+  assertFalse(s.has(p3));
+
+  fix(p1)
+  fix(p2)
+  assertTrue(s.has(p1));
+  assertTrue(s.has(p2));
+  assertFalse(s.has(p3));
+
+  s.delete(p2);
+  assertTrue(s.has(p1));
+  assertFalse(s.has(p2));
+  assertFalse(s.has(p3));
+}
+
+TestSet(Set, Object.seal)
+TestSet(Set, Object.freeze)
+TestSet(Set, Object.preventExtensions)
+
+
+// Maps and weak maps.
+
+function TestMap(construct, fix) {
+  TestWithProxies(TestMap2, construct, fix)
+}
+
+function TestMap2(construct, fix, create) {
+  var handler = {fix: function() { return {} }}
+  var p1 = create(handler)
+  var p2 = create(handler)
+  var p3 = create(handler)
+  fix(p3)
+
+  var m = new construct();
+  m.set(p1, 123);
+  m.set(p2, 321);
+  assertTrue(m.has(p1));
+  assertTrue(m.has(p2));
+  assertFalse(m.has(p3));
+  assertSame(123, m.get(p1));
+  assertSame(321, m.get(p2));
+
+  fix(p1)
+  fix(p2)
+  assertTrue(m.has(p1));
+  assertTrue(m.has(p2));
+  assertFalse(m.has(p3));
+  assertSame(123, m.get(p1));
+  assertSame(321, m.get(p2));
+
+  m.delete(p2);
+  assertTrue(m.has(p1));
+  assertFalse(m.has(p2));
+  assertFalse(m.has(p3));
+  assertSame(123, m.get(p1));
+  assertSame(undefined, m.get(p2));
+}
+
+TestMap(Map, Object.seal)
+TestMap(Map, Object.freeze)
+TestMap(Map, Object.preventExtensions)
+
+TestMap(WeakMap, Object.seal)
+TestMap(WeakMap, Object.freeze)
+TestMap(WeakMap, Object.preventExtensions)