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Diffstat (limited to 'deps/v8/test/mjsunit/es6/proxies-get.js')
-rw-r--r-- | deps/v8/test/mjsunit/es6/proxies-get.js | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/es6/proxies-get.js b/deps/v8/test/mjsunit/es6/proxies-get.js new file mode 100644 index 0000000000..b1b92dbb06 --- /dev/null +++ b/deps/v8/test/mjsunit/es6/proxies-get.js @@ -0,0 +1,127 @@ +// Copyright 2015 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: --allow-natives-syntax + +(function testBasicFunctionality() { + var target = { + target_one: 1, + property: "value" + }; + + var handler = {handler:1}; + + var proxy = new Proxy(target, handler); + assertEquals("value", proxy.property); + assertEquals(undefined, proxy.nothing); + assertEquals(undefined, proxy.handler); + + handler.get = function() { return "value 2" }; + assertEquals("value 2", proxy.property); + assertEquals("value 2", proxy.nothing); + assertEquals("value 2", proxy.handler); + + var handler2 = new Proxy({get: function() { return "value 3" }},{}); + var proxy2 = new Proxy(target, handler2); + assertEquals("value 3", proxy2.property); + assertEquals("value 3", proxy2.nothing); + assertEquals("value 3", proxy2.handler); +})(); + +(function testThrowOnGettingTrap() { + var handler = new Proxy({}, {get: function(){ throw Error() }}); + var proxy = new Proxy({}, handler); + assertThrows("proxy.property", Error); +})(); + +(function testFallback() { + var target = {property:"value"}; + var proxy = new Proxy(target, {}); + assertEquals("value", proxy.property); + assertEquals(undefined, proxy.property2); +})(); + +(function testFallbackUndefinedTrap() { + var handler = new Proxy({}, {get: function(){ return undefined }}); + var target = {property:"value"}; + var proxy = new Proxy(target, handler); + assertEquals("value", proxy.property); + assertEquals(undefined, proxy.property2); +})(); + +(function testFailingInvariant() { + var target = {}; + var handler = { get: function(r, p){ if (p != "key4") return "value" }} + var proxy = new Proxy(target, handler); + assertEquals("value", proxy.property); + assertEquals("value", proxy.key); + assertEquals("value", proxy.key2); + assertEquals("value", proxy.key3); + + // Define a non-configurable, non-writeable property on the target for + // which the handler will return a different value. + Object.defineProperty(target, "key", { + configurable: false, + writable: false, + value: "different value" + }); + assertEquals("value", proxy.property); + assertThrows(function(){ proxy.key }, TypeError); + assertEquals("value", proxy.key2); + assertEquals("value", proxy.key3); + + // Define a non-configurable getter on the target for which the handler + // will return a value, according to the spec we do not throw. + Object.defineProperty(target, "key2", { + configurable: false, + get: function() { return "different value" } + }); + assertEquals("value", proxy.property); + assertThrows(function(){ proxy.key }, TypeError); + assertEquals("value", proxy.key2); + assertEquals("value", proxy.key3); + + // Define a non-configurable setter without a corresponding getter on the + // target for which the handler will return a value. + Object.defineProperty(target, "key3", { + configurable: false, + set: function() { } + }); + assertEquals("value", proxy.property); + assertThrows(function(){ proxy.key }, TypeError); + assertEquals("value", proxy.key2); + assertThrows(function(){ proxy.key3 }, TypeError); + + // Define a non-configurable setter without a corresponding getter on the + // target for which the handler will return undefined. + Object.defineProperty(target, "key4", { + configurable: false, + set: function() { } + }); + assertSame(undefined, proxy.key4); +})(); + +(function testGetInternalIterators() { + var log = []; + var array = [1,2,3,4,5] + var origIt = array[Symbol.iterator](); + var it = new Proxy(origIt, { + get(t, name) { + log.push(`[[Get]](iterator, ${String(name)})`); + return Reflect.get(t, name); + }, + set(t, name, val) { + log.push(`[[Set]](iterator, ${String(name)}, ${String(val)})`); + return Reflect.set(t, name, val); + } + }); + + assertThrows(function() { + for (var v of it) log.push(v); + }, TypeError); + assertEquals([ + "[[Get]](iterator, Symbol(Symbol.iterator))", + "[[Get]](iterator, next)" + ], log); +})(); |