v8/test/mjsunit/harmony/proxies-function.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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// Flags: --harmony-proxies --allow-natives-syntax


// TODO(neis): These tests are temporarily commented out because of ongoing
// changes to the implementation of proxies.


//// Ensures that checking the "length" property of a function proxy doesn't
//// crash due to lack of a [[Get]] method.
//var handler = {
//  get : function(r, n) { return n == "length" ? 2 : undefined }
//}
//
//
//// Calling (call, Function.prototype.call, Function.prototype.apply,
////          Function.prototype.bind).
//
//var global_object = this
//var receiver
//
//function TestCall(isStrict, callTrap) {
//  assertEquals(42, callTrap(5, 37))
//  assertSame(isStrict ? undefined : global_object, receiver)
//
//  var handler = {
//    get: function(r, k) {
//      return k == "length" ? 2 : Function.prototype[k]
//    }
//  }
//  var f = Proxy.createFunction(handler, callTrap)
//  var o = {f: f}
//  global_object.f = f
//
//  receiver = 333
//  assertEquals(42, f(11, 31))
//  assertSame(isStrict ? undefined : global_object, receiver)
//  receiver = 333
//  assertEquals(42, o.f(10, 32))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, o["f"](9, 33))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, (1, o).f(8, 34))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, (1, o)["f"](7, 35))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, f.call(o, 32, 10))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, f.call(undefined, 33, 9))
//  assertSame(isStrict ? undefined : global_object, receiver)
//  receiver = 333
//  assertEquals(42, f.call(null, 33, 9))
//  assertSame(isStrict ? null : global_object, receiver)
//  receiver = 333
//  assertEquals(44, f.call(2, 21, 23))
//  assertSame(2, receiver.valueOf())
//  receiver = 333
//  assertEquals(42, Function.prototype.call.call(f, o, 20, 22))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(43, Function.prototype.call.call(f, null, 20, 23))
//  assertSame(isStrict ? null : global_object, receiver)
//  assertEquals(44, Function.prototype.call.call(f, 2, 21, 23))
//  assertEquals(2, receiver.valueOf())
//  receiver = 333
//  assertEquals(32, f.apply(o, [16, 16]))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(32, Function.prototype.apply.call(f, o, [17, 15]))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Call(f, o, 11, 31));
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Call(f, null, 11, 31));
//  assertSame(isStrict ? null : global_object, receiver)
//  receiver = 333
//  assertEquals(42, %Apply(f, o, [11, 31], 0, 2))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Apply(f, null, [11, 31], 0, 2))
//  assertSame(isStrict ? null : global_object, receiver)
//  receiver = 333
//  assertEquals(42, %_Call(f, o, 11, 31))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %_Call(f, null, 11, 31))
//  assertSame(isStrict ? null : global_object, receiver)
//
//  var ff = Function.prototype.bind.call(f, o, 12)
//  assertTrue(ff.length <= 1)  // TODO(rossberg): Not spec'ed yet, be lax.
//  receiver = 333
//  assertEquals(42, ff(30))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(33, Function.prototype.call.call(ff, {}, 21))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(32, Function.prototype.apply.call(ff, {}, [20]))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(23, %Call(ff, {}, 11));
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(23, %Call(ff, {}, 11, 3));
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(24, %Apply(ff, {}, [12, 13], 0, 1))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(24, %Apply(ff, {}, [12, 13], 0, 2))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(34, %_Call(ff, {}, 22))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(34, %_Call(ff, {}, 22, 3))
//  assertSame(o, receiver)
//
//  var fff = Function.prototype.bind.call(ff, o, 30)
//  assertEquals(0, fff.length)
//  receiver = 333
//  assertEquals(42, fff())
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, Function.prototype.call.call(fff, {}))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, Function.prototype.apply.call(fff, {}))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Call(fff, {}));
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Call(fff, {}, 11, 3))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Apply(fff, {}, [], 0, 0))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Apply(fff, {}, [12, 13], 0, 0))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %Apply(fff, {}, [12, 13], 0, 2))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %_Call(fff, {}))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %_Call(fff, {}, 3, 4, 5))
//  assertSame(o, receiver)
//
//  var f = CreateFrozen({}, callTrap)
//  receiver = 333
//  assertEquals(42, f(11, 31))
//  assertSame(isStrict ? undefined : global_object, receiver)
//  var o = {f: f}
//  receiver = 333
//  assertEquals(42, o.f(10, 32))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, o["f"](9, 33))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, (1, o).f(8, 34))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, (1, o)["f"](7, 35))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, Function.prototype.call.call(f, o, 20, 22))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(32, Function.prototype.apply.call(f, o, [17, 15]))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(23, %Call(f, o, 11, 12))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(27, %Apply(f, o, [12, 13, 14], 1, 2))
//  assertSame(o, receiver)
//  receiver = 333
//  assertEquals(42, %_Call(f, o, 18, 24))
//  assertSame(o, receiver)
//}
//
//TestCall(false, function(x, y) {
//  receiver = this
//  return x + y
//})
//
//TestCall(true, function(x, y) {
//  "use strict"
//  receiver = this
//  return x + y
//})
//
//TestCall(false, function() {
//  receiver = this
//  return arguments[0] + arguments[1]
//})
//
//TestCall(false, Proxy.createFunction(handler, function(x, y) {
//  receiver = this
//  return x + y
//}))
//
//TestCall(true, Proxy.createFunction(handler, function(x, y) {
//  "use strict"
//  receiver = this
//  return x + y
//}))
//
//TestCall(false, CreateFrozen(handler, function(x, y) {
//  receiver = this
//  return x + y
//}))
//
//
//
//// Using intrinsics as call traps.
//
//function TestCallIntrinsic(type, callTrap) {
//  var f = Proxy.createFunction({}, callTrap)
//  var x = f()
//  assertTrue(typeof x == type)
//}
//
//TestCallIntrinsic("boolean", Boolean)
//TestCallIntrinsic("number", Number)
//TestCallIntrinsic("string", String)
//TestCallIntrinsic("object", Object)
//TestCallIntrinsic("function", Function)
//
//
//
//// Throwing from call trap.
//
//function TestCallThrow(callTrap) {
//  var f = Proxy.createFunction({}, callTrap)
//  assertThrows(function(){ f(11) }, "myexn")
//  assertThrows(function(){ ({x: f}).x(11) }, "myexn")
//  assertThrows(function(){ ({x: f})["x"](11) }, "myexn")
//  assertThrows(function(){ Function.prototype.call.call(f, {}, 2) }, "myexn")
//  assertThrows(function(){ Function.prototype.apply.call(f, {}, [1]) }, "myexn")
//  assertThrows(function(){ %Call(f, {}) }, "myexn")
//  assertThrows(function(){ %Call(f, {}, 1, 2) }, "myexn")
//  assertThrows(function(){ %Apply({}, f, [], 3, 0) }, "myexn")
//  assertThrows(function(){ %Apply({}, f, [3, 4], 0, 1) }, "myexn")
//  assertThrows(function(){ %_Call(f, {}) }, "myexn")
//  assertThrows(function(){ %_Call(f, {}, 1, 2) }, "myexn")
//
//  var f = CreateFrozen({}, callTrap)
//  assertThrows(function(){ f(11) }, "myexn")
//  assertThrows(function(){ ({x: f}).x(11) }, "myexn")
//  assertThrows(function(){ ({x: f})["x"](11) }, "myexn")
//  assertThrows(function(){ Function.prototype.call.call(f, {}, 2) }, "myexn")
//  assertThrows(function(){ Function.prototype.apply.call(f, {}, [1]) }, "myexn")
//  assertThrows(function(){ %Call(f, {}) }, "myexn")
//  assertThrows(function(){ %Call(f, {}, 1, 2) }, "myexn")
//  assertThrows(function(){ %Apply({}, f, [], 3, 0) }, "myexn")
//  assertThrows(function(){ %Apply({}, f, [3, 4], 0, 1) }, "myexn")
//  assertThrows(function(){ %_Call(f, {}) }, "myexn")
//  assertThrows(function(){ %_Call(f, {}, 1, 2) }, "myexn")
//}
//
//TestCallThrow(function() { throw "myexn" })
//TestCallThrow(Proxy.createFunction({}, function() { throw "myexn" }))
//TestCallThrow(CreateFrozen({}, function() { throw "myexn" }))
//
//
//
//// Construction (new).
//
//var prototype = {myprop: 0}
//var receiver
//
//var handlerWithPrototype = {
//  fix: function() { return { prototype: { value: prototype } }; },
//  get: function(r, n) {
//    if (n == "length") return 2;
//    assertEquals("prototype", n);
//    return prototype;
//  }
//}
//
//var handlerSansPrototype = {
//  fix: function() { return { length: { value: 2 } } },
//  get: function(r, n) {
//    if (n == "length") return 2;
//    assertEquals("prototype", n);
//    return undefined;
//  }
//}
//
//function ReturnUndef(x, y) {
//  "use strict";
//  receiver = this;
//  this.sum = x + y;
//}
//
//function ReturnThis(x, y) {
//  "use strict";
//  receiver = this;
//  this.sum = x + y;
//  return this;
//}
//
//function ReturnNew(x, y) {
//  "use strict";
//  receiver = this;
//  return {sum: x + y};
//}
//
//function ReturnNewWithProto(x, y) {
//  "use strict";
//  receiver = this;
//  var result = Object.create(prototype);
//  result.sum = x + y;
//  return result;
//}
//
//function TestConstruct(proto, constructTrap) {
//  TestConstruct2(proto, constructTrap, handlerWithPrototype)
//  TestConstruct2(proto, constructTrap, handlerSansPrototype)
//}
//
//function TestConstruct2(proto, constructTrap, handler) {
//  var f = Proxy.createFunction(handler, function() {}, constructTrap)
//  var o = new f(11, 31)
//  assertEquals(undefined, receiver)
//  assertEquals(42, o.sum)
//  assertSame(proto, Object.getPrototypeOf(o))
//
//  var f = CreateFrozen(handler, function() {}, constructTrap)
//  var o = new f(11, 32)
//  assertEquals(undefined, receiver)
//  assertEquals(43, o.sum)
//  assertSame(proto, Object.getPrototypeOf(o))
//}
//
//TestConstruct(Object.prototype, ReturnNew)
//TestConstruct(prototype, ReturnNewWithProto)
//
//TestConstruct(Object.prototype, Proxy.createFunction(handler, ReturnNew))
//TestConstruct(prototype, Proxy.createFunction(handler, ReturnNewWithProto))
//
//TestConstruct(Object.prototype, CreateFrozen(handler, ReturnNew))
//TestConstruct(prototype, CreateFrozen(handler, ReturnNewWithProto))
//
//
//
//// Construction with derived construct trap.
//
//function TestConstructFromCall(proto, returnsThis, callTrap) {
//  TestConstructFromCall2(prototype, returnsThis, callTrap, handlerWithPrototype)
//  TestConstructFromCall2(proto, returnsThis, callTrap, handlerSansPrototype)
//}
//
//function TestConstructFromCall2(proto, returnsThis, callTrap, handler) {
//  // TODO(rossberg): handling of prototype for derived construct trap will be
//  // fixed in a separate change. Commenting out checks below for now.
//  var f = Proxy.createFunction(handler, callTrap)
//  var o = new f(11, 31)
//  if (returnsThis) assertEquals(o, receiver)
//  assertEquals(42, o.sum)
//  // assertSame(proto, Object.getPrototypeOf(o))
//
//  var g = CreateFrozen(handler, callTrap)
//  // assertSame(f.prototype, g.prototype)
//  var o = new g(11, 32)
//  if (returnsThis) assertEquals(o, receiver)
//  assertEquals(43, o.sum)
//  // assertSame(proto, Object.getPrototypeOf(o))
//}
//
//TestConstructFromCall(Object.prototype, true, ReturnUndef)
//TestConstructFromCall(Object.prototype, true, ReturnThis)
//TestConstructFromCall(Object.prototype, false, ReturnNew)
//TestConstructFromCall(prototype, false, ReturnNewWithProto)
//
//TestConstructFromCall(Object.prototype, true,
//                      Proxy.createFunction(handler, ReturnUndef))
//TestConstructFromCall(Object.prototype, true,
//                      Proxy.createFunction(handler, ReturnThis))
//TestConstructFromCall(Object.prototype, false,
//                      Proxy.createFunction(handler, ReturnNew))
//TestConstructFromCall(prototype, false,
//                      Proxy.createFunction(handler, ReturnNewWithProto))
//
//TestConstructFromCall(Object.prototype, true, CreateFrozen({}, ReturnUndef))
//TestConstructFromCall(Object.prototype, true, CreateFrozen({}, ReturnThis))
//TestConstructFromCall(Object.prototype, false, CreateFrozen({}, ReturnNew))
//TestConstructFromCall(prototype, false, CreateFrozen({}, ReturnNewWithProto))
//
//ReturnUndef.prototype = prototype
//ReturnThis.prototype = prototype
//ReturnNew.prototype = prototype
//ReturnNewWithProto.prototype = prototype
//
//TestConstructFromCall(prototype, true, ReturnUndef)
//TestConstructFromCall(prototype, true, ReturnThis)
//TestConstructFromCall(Object.prototype, false, ReturnNew)
//TestConstructFromCall(prototype, false, ReturnNewWithProto)
//
//TestConstructFromCall(Object.prototype, true,
//                      Proxy.createFunction(handler, ReturnUndef))
//TestConstructFromCall(Object.prototype, true,
//                      Proxy.createFunction(handler, ReturnThis))
//TestConstructFromCall(Object.prototype, false,
//                      Proxy.createFunction(handler, ReturnNew))
//TestConstructFromCall(prototype, false,
//                      Proxy.createFunction(handler, ReturnNewWithProto))
//
//TestConstructFromCall(prototype, true,
//                      Proxy.createFunction(handlerWithPrototype, ReturnUndef))
//TestConstructFromCall(prototype, true,
//                      Proxy.createFunction(handlerWithPrototype, ReturnThis))
//TestConstructFromCall(Object.prototype, false,
//                      Proxy.createFunction(handlerWithPrototype, ReturnNew))
//TestConstructFromCall(prototype, false,
//                      Proxy.createFunction(handlerWithPrototype,
//                                           ReturnNewWithProto))
//
//TestConstructFromCall(prototype, true,
//                      CreateFrozen(handlerWithPrototype, ReturnUndef))
//TestConstructFromCall(prototype, true,
//                      CreateFrozen(handlerWithPrototype, ReturnThis))
//TestConstructFromCall(Object.prototype, false,
//                      CreateFrozen(handlerWithPrototype, ReturnNew))
//TestConstructFromCall(prototype, false,
//                      CreateFrozen(handlerWithPrototype, ReturnNewWithProto))
//
//
//
//// Throwing from the construct trap.
//
//function TestConstructThrow(trap) {
//  TestConstructThrow2(Proxy.createFunction({ fix: function() {return {};} },
//                                           trap))
//  TestConstructThrow2(Proxy.createFunction({ fix: function() {return {};} },
//                                           function() {},
//                                           trap))
//}
//
//function TestConstructThrow2(f) {
//  assertThrows(function(){ new f(11) }, "myexn")
//  Object.freeze(f)
//  assertThrows(function(){ new f(11) }, "myexn")
//}
//
//TestConstructThrow(function() { throw "myexn" })
//TestConstructThrow(Proxy.createFunction({}, function() { throw "myexn" }))
//TestConstructThrow(CreateFrozen({}, function() { throw "myexn" }))
//
//
//
//// Using function proxies as getters and setters.
//
//var value
//var receiver
//
//function TestAccessorCall(getterCallTrap, setterCallTrap) {
//  var handler = { fix: function() { return {} } }
//  var pgetter = Proxy.createFunction(handler, getterCallTrap)
//  var psetter = Proxy.createFunction(handler, setterCallTrap)
//
//  var o = {}
//  var oo = Object.create(o)
//  Object.defineProperty(o, "a", {get: pgetter, set: psetter})
//  Object.defineProperty(o, "b", {get: pgetter})
//  Object.defineProperty(o, "c", {set: psetter})
//  Object.defineProperty(o, "3", {get: pgetter, set: psetter})
//  Object.defineProperty(oo, "a", {value: 43})
//
//  receiver = ""
//  assertEquals(42, o.a)
//  assertSame(o, receiver)
//  receiver = ""
//  assertEquals(42, o.b)
//  assertSame(o, receiver)
//  receiver = ""
//  assertEquals(undefined, o.c)
//  assertEquals("", receiver)
//  receiver = ""
//  assertEquals(42, o["a"])
//  assertSame(o, receiver)
//  receiver = ""
//  assertEquals(42, o[3])
//  assertSame(o, receiver)
//
//  receiver = ""
//  assertEquals(43, oo.a)
//  assertEquals("", receiver)
//  receiver = ""
//  assertEquals(42, oo.b)
//  assertSame(oo, receiver)
//  receiver = ""
//  assertEquals(undefined, oo.c)
//  assertEquals("", receiver)
//  receiver = ""
//  assertEquals(43, oo["a"])
//  assertEquals("", receiver)
//  receiver = ""
//  assertEquals(42, oo[3])
//  assertSame(oo, receiver)
//
//  receiver = ""
//  assertEquals(50, o.a = 50)
//  assertSame(o, receiver)
//  assertEquals(50, value)
//  receiver = ""
//  assertEquals(51, o.b = 51)
//  assertEquals("", receiver)
//  assertEquals(50, value)  // no setter
//  assertThrows(function() { "use strict"; o.b = 51 }, TypeError)
//  receiver = ""
//  assertEquals(52, o.c = 52)
//  assertSame(o, receiver)
//  assertEquals(52, value)
//  receiver = ""
//  assertEquals(53, o["a"] = 53)
//  assertSame(o, receiver)
//  assertEquals(53, value)
//  receiver = ""
//  assertEquals(54, o[3] = 54)
//  assertSame(o, receiver)
//  assertEquals(54, value)
//
//  value = 0
//  receiver = ""
//  assertEquals(60, oo.a = 60)
//  assertEquals("", receiver)
//  assertEquals(0, value)  // oo has own 'a'
//  assertEquals(61, oo.b = 61)
//  assertSame("", receiver)
//  assertEquals(0, value)  // no setter
//  assertThrows(function() { "use strict"; oo.b = 61 }, TypeError)
//  receiver = ""
//  assertEquals(62, oo.c = 62)
//  assertSame(oo, receiver)
//  assertEquals(62, value)
//  receiver = ""
//  assertEquals(63, oo["c"] = 63)
//  assertSame(oo, receiver)
//  assertEquals(63, value)
//  receiver = ""
//  assertEquals(64, oo[3] = 64)
//  assertSame(oo, receiver)
//  assertEquals(64, value)
//}
//
//TestAccessorCall(
//  function() { receiver = this; return 42 },
//  function(x) { receiver = this; value = x }
//)
//
//TestAccessorCall(
//  function() { "use strict"; receiver = this; return 42 },
//  function(x) { "use strict"; receiver = this; value = x }
//)
//
//TestAccessorCall(
//  Proxy.createFunction({}, function() { receiver = this; return 42 }),
//  Proxy.createFunction({}, function(x) { receiver = this; value = x })
//)
//
//TestAccessorCall(
//  CreateFrozen({}, function() { receiver = this; return 42 }),
//  CreateFrozen({}, function(x) { receiver = this; value = x })
//)
//
//
//
//// Passing a proxy function to higher-order library functions.
//
//function TestHigherOrder(f) {
//  assertEquals(6, [6, 2].map(f)[0])
//  assertEquals(4, [5, 2].reduce(f, 4))
//  assertTrue([1, 2].some(f))
//  assertEquals("a.b.c", "a.b.c".replace(".", f))
//}
//
//TestHigherOrder(function(x) { return x })
//TestHigherOrder(function(x) { "use strict"; return x })
//TestHigherOrder(Proxy.createFunction({}, function(x) { return x }))
//TestHigherOrder(CreateFrozen({}, function(x) { return x }))
//
//
//
//// TODO(rossberg): Ultimately, I want to have the following test function
//// run through, but it currently fails on so many cases (some not even
//// involving proxies), that I leave that for later...
///*
//function TestCalls() {
//  var handler = {
//    get: function(r, k) {
//      return k == "length" ? 2 : Function.prototype[k]
//    }
//  }
//  var bind = Function.prototype.bind
//  var o = {}
//
//  var traps = [
//    function(x, y) {
//      return {receiver: this, result: x + y, strict: false}
//    },
//    function(x, y) { "use strict";
//      return {receiver: this, result: x + y, strict: true}
//    },
//    function() {
//      var x = arguments[0], y = arguments[1]
//      return {receiver: this, result: x + y, strict: false}
//    },
//    Proxy.createFunction(handler, function(x, y) {
//      return {receiver: this, result: x + y, strict: false}
//    }),
//    Proxy.createFunction(handler, function() {
//      var x = arguments[0], y = arguments[1]
//      return {receiver: this, result: x + y, strict: false}
//    }),
//    Proxy.createFunction(handler, function(x, y) { "use strict"
//      return {receiver: this, result: x + y, strict: true}
//    }),
//    CreateFrozen(handler, function(x, y) {
//      return {receiver: this, result: x + y, strict: false}
//    }),
//    CreateFrozen(handler, function(x, y) { "use strict"
//      return {receiver: this, result: x + y, strict: true}
//    }),
//  ]
//  var creates = [
//    function(trap) { return trap },
//    function(trap) { return CreateFrozen({}, callTrap) },
//    function(trap) { return Proxy.createFunction(handler, callTrap) },
//    function(trap) {
//      return Proxy.createFunction(handler, CreateFrozen({}, callTrap))
//    },
//    function(trap) {
//      return Proxy.createFunction(handler, Proxy.createFunction(handler, callTrap))
//    },
//  ]
//  var binds = [
//    function(f, o, x, y) { return f },
//    function(f, o, x, y) { return bind.call(f, o) },
//    function(f, o, x, y) { return bind.call(f, o, x) },
//    function(f, o, x, y) { return bind.call(f, o, x, y) },
//    function(f, o, x, y) { return bind.call(f, o, x, y, 5) },
//    function(f, o, x, y) { return bind.call(bind.call(f, o), {}, x, y) },
//    function(f, o, x, y) { return bind.call(bind.call(f, o, x), {}, y) },
//    function(f, o, x, y) { return bind.call(bind.call(f, o, x, y), {}, 5) },
//  ]
//  var calls = [
//    function(f, x, y) { return f(x, y) },
//    function(f, x, y) { var g = f; return g(x, y) },
//    function(f, x, y) { with ({}) return f(x, y) },
//    function(f, x, y) { var g = f; with ({}) return g(x, y) },
//    function(f, x, y, o) { with (o) return f(x, y) },
//    function(f, x, y, o) { return f.call(o, x, y) },
//    function(f, x, y, o) { return f.apply(o, [x, y]) },
//    function(f, x, y, o) { return Function.prototype.call.call(f, o, x, y) },
//    function(f, x, y, o) { return Function.prototype.apply.call(f, o, [x, y]) },
//    function(f, x, y, o) { return %_Call(f, o, x, y) },
//    function(f, x, y, o) { return %Call(f, o, x, y) },
//    function(f, x, y, o) { return %Apply(f, o, [null, x, y, null], 1, 2) },
//    function(f, x, y, o) { return %Apply(f, o, arguments, 2, 2) },
//    function(f, x, y, o) { if (typeof o == "object") return o.f(x, y) },
//    function(f, x, y, o) { if (typeof o == "object") return o["f"](x, y) },
//    function(f, x, y, o) { if (typeof o == "object") return (1, o).f(x, y) },
//    function(f, x, y, o) { if (typeof o == "object") return (1, o)["f"](x, y) },
//  ]
//  var receivers = [o, global_object, undefined, null, 2, "bla", true]
//  var expectedSloppies = [o, global_object, global_object, global_object]
//
//  for (var t = 0; t < traps.length; ++t) {
//    for (var i = 0; i < creates.length; ++i) {
//      for (var j = 0; j < binds.length; ++j) {
//        for (var k = 0; k < calls.length; ++k) {
//          for (var m = 0; m < receivers.length; ++m) {
//            for (var n = 0; n < receivers.length; ++n) {
//              var bound = receivers[m]
//              var receiver = receivers[n]
//              var func = binds[j](creates[i](traps[t]), bound, 31, 11)
//              var expected = j > 0 ? bound : receiver
//              var expectedSloppy = expectedSloppies[j > 0 ? m : n]
//              o.f = func
//              global_object.f = func
//              var x = calls[k](func, 11, 31, receiver)
//              if (x !== undefined) {
//                assertEquals(42, x.result)
//                if (calls[k].length < 4)
//                  assertSame(x.strict ? undefined : global_object, x.receiver)
//                else if (x.strict)
//                  assertSame(expected, x.receiver)
//                else if (expectedSloppy === undefined)
//                  assertSame(expected, x.receiver.valueOf())
//                else
//                  assertSame(expectedSloppy, x.receiver)
//              }
//            }
//          }
//        }
//      }
//    }
//  }
//}
//
//TestCalls()
//*/
//
//var realms = [Realm.create(), Realm.create()];
//Realm.shared = {};
//
//Realm.eval(realms[0], "function f() { return this; };");
//Realm.eval(realms[0], "Realm.shared.f = f;");
//Realm.eval(realms[0], "Realm.shared.fg = this;");
//Realm.eval(realms[1], "function g() { return this; };");
//Realm.eval(realms[1], "Realm.shared.g = g;");
//Realm.eval(realms[1], "Realm.shared.gg = this;");
//
//var fp = Proxy.createFunction({}, Realm.shared.f);
//var gp = Proxy.createFunction({}, Realm.shared.g);
//
//for (var i = 0; i < 10; i++) {
//  assertEquals(Realm.shared.fg, fp());
//  assertEquals(Realm.shared.gg, gp());
//
//  with (this) {
//    assertEquals(this, fp());
//    assertEquals(this, gp());
//  }
//
//  with ({}) {
//    assertEquals(Realm.shared.fg, fp());
//    assertEquals(Realm.shared.gg, gp());
//  }
//}