Upgrade V8 to 5.1.281.57 DO NOT MERGE
FPIIM-449
Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/test/mjsunit/es6/proxies-for.js b/test/mjsunit/es6/proxies-for.js
new file mode 100644
index 0000000..5b81845
--- /dev/null
+++ b/test/mjsunit/es6/proxies-for.js
@@ -0,0 +1,218 @@
+// 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, x, y, z) {
+ test(function(h){ return new Proxy({}, h) }, x, y, z)
+}
+
+
+// Iterate over a proxy.
+
+function TestForIn(properties, handler) {
+ TestWithProxies(TestForIn2, properties, handler)
+}
+
+function TestForIn2(create, properties, handler) {
+ var p = create(handler)
+ var found = []
+ for (var x in p) found.push(x)
+ assertArrayEquals(properties, found)
+}
+
+TestForIn(["0", "a"], {
+ ownKeys() { return ["0", "a"] },
+ has(target, property) { return true },
+ getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }}
+})
+
+TestForIn(["null", "a"], {
+ ownKeys() { return this.enumerate() },
+ enumerate() { return ["null", "a"] },
+ has(target, property) { return true },
+ getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }}
+})
+
+
+// Iterate over an object with a proxy prototype.
+
+function TestForInDerived(properties, handler) {
+ TestWithProxies(TestForInDerived2, properties, handler)
+}
+
+function TestForInDerived2(create, properties, handler) {
+ var p = create(handler)
+ var o = Object.create(p)
+ o.z = 0
+ var found = []
+ for (var x in o) found.push(x)
+ assertArrayEquals(["z"].concat(properties), found)
+
+ var oo = Object.create(o)
+ oo.y = 0
+ var found = []
+ for (var x in oo) found.push(x)
+ assertArrayEquals(["y", "z"].concat(properties), found)
+}
+
+TestForInDerived(["0", "a"], {
+ ownKeys: function() { return ["0", "a"] },
+ has: function(t, k) { return k == "0" || k == "a" },
+ getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }}
+})
+
+TestForInDerived(["null", "a"], {
+ ownKeys: function() { return this.enumerate() },
+ enumerate: function() { return ["null", "a"] },
+ has: function(t, k) { return k == "null" || k == "a" },
+ getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }}
+})
+
+
+
+// Throw exception in ownKeys trap.
+
+function TestForInThrow(handler) {
+ TestWithProxies(TestForInThrow2, handler)
+}
+
+function TestForInThrow2(create, handler) {
+ var p = create(handler)
+ var o = Object.create(p)
+ assertThrowsEquals(function(){ for (var x in p) {} }, "myexn")
+ assertThrowsEquals(function(){ for (var x in o) {} }, "myexn")
+}
+
+TestForInThrow({
+ ownKeys: function() { throw "myexn" }
+})
+
+TestForInThrow({
+ ownKeys: function() { return this.enumerate() },
+ enumerate: function() { throw "myexn" }
+})
+
+TestForInThrow(new Proxy({}, {
+ get: function(pr, pk) {
+ return function() { throw "myexn" }
+ }
+}));
+
+
+function keys(object) {
+ var keys = [];
+ for (var k in object) {
+ keys.push(k);
+ }
+ return keys;
+}
+
+(function testKeysProxyOnProtoEmpty() {
+ var p = new Proxy({}, {
+ ownKeys() { return []; },
+ });
+ var o = [0];
+ o.__proto__ = p;
+ assertEquals(["0"], keys(o));
+
+ delete o[0];
+ assertEquals([], keys(o));
+})();
+
+(function testKeysProxyOnProto() {
+ var handler = {ownKeys() { return ["0"]; }};
+ var proxy = new Proxy({}, handler);
+ var object = [0];
+ object.__proto__ = proxy;
+ assertEquals(["0"], keys(object));
+
+ // The Proxy doesn't set his ownKeys enumerable.
+ delete object[0];
+ assertEquals([], keys(object));
+
+ // The [[Has]] trap has no influence on which are enumerable properties are
+ // shown in for-in.
+ handler.has = function() { return true };
+ assertEquals([], keys(object));
+
+ handler.getOwnPropertyDescriptor = function() {
+ return {enumerable: true, configurable: true}
+ }
+ assertEquals(["0"], keys(object));
+})();
+
+(function testKeysProxyProto() {
+ var target = {t1:true, t2:true};
+ var handler = {};
+ var proxy = new Proxy(target, handler);
+
+ assertEquals(["t1", "t2"], keys(proxy));
+
+ target.__proto__ = {p1:true, p2:true};
+ assertEquals(["t1", "t2", "p1", "p2"], keys(proxy));
+
+ handler.getPrototypeOf = function(target) {
+ return {p3:true, p4:true};
+ };
+ // for-in walks the prototype chain for the [[Has]] / Enumerable check.
+ assertEquals(["t1", "t2", "p3", "p4"], keys(proxy));
+
+ // [[Has]] is not used in for-in.
+ handler.has = function() { return false };
+ assertEquals(["t1", "t2", "p3", "p4"], keys(proxy));
+
+ // Proxy intercepts enumerability check.
+ handler.getOwnPropertyDescriptor = function() {
+ return {enumerable: false, configurable: true}
+ }
+ assertEquals([], keys(proxy));
+
+ handler.getOwnPropertyDescriptor = function() {
+ return {enumerable: true, configurable: true}
+ }
+ assertEquals(["t1", "t2", "p3", "p4"], keys(proxy));
+
+ handler.getOwnPropertyDescriptor = function(target, key) {
+ return {
+ enumerable: key in target,
+ configurable: true
+ }
+ }
+ assertEquals(["t1", "t2"], keys(proxy));
+
+ handler.getPrototypeOf = function() { throw "error" };
+ assertThrowsEquals(() => {keys(proxy)}, "error");
+})();
+
+
+(function () {
+ var symbol = Symbol();
+ var p = new Proxy({}, {ownKeys() { return ["1", symbol, "2"] }});
+ assertEquals(["1","2"], Object.getOwnPropertyNames(p));
+ assertEquals([symbol], Object.getOwnPropertySymbols(p));
+})();