JSTests/test262/test/built-ins/ShadowRealm/prototype/evaluate/wrapped-function-proto-from-caller-realm.js

// Copyright (C) 2021 Chengzhong Wu. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-shadowrealm.prototype.evaluate
description: >
  WrappedFunctionCreate should create a function derived from the caller realm
info: |
  ShadowRealm.prototype.evaluate ( sourceText )
  ...
  4. Let callerRealm be the current Realm Record.
  5. Let evalRealm be O.[[ShadowRealm]].
  6. Return ? PerformRealmEval(sourceText, callerRealm, evalRealm).

  PerformRealmEval ( sourceText, callerRealm, evalRealm )
  ...
  25. Return ? GetWrappedValue(callerRealm, result).

  GetWrappedValue ( callerRealm, value )
  ...
  2.b. Return ? WrappedFunctionCreate(callerRealm, value).

  WrappedFunctionCreate ( callerRealm, targetFunction )
  ...
  5. Set obj.[[Prototype]] to callerRealm.[[Intrinsics]].[[%Function.prototype%]].
features: [ShadowRealm, cross-realm, Reflect]
---*/

assert.sameValue(
  typeof ShadowRealm.prototype.evaluate,
  'function',
  'This test must fail if ShadowRealm.prototype.evaluate is not a function'
);

var other = $262.createRealm().global;
var OtherShadowRealm = other.ShadowRealm;
var OtherFunctionPrototype = other.Function.prototype;

var yetAnother = $262.createRealm().global;
var YetAnotherShadowRealm = yetAnother.ShadowRealm;
var YetAnotherFunctionPrototype = yetAnother.Function.prototype;

var realm = Reflect.construct(OtherShadowRealm, []);

var checkArgWrapperFn = realm.evaluate('(x) => { return Object.getPrototypeOf(x) === Function.prototype }')
assert.sameValue(checkArgWrapperFn(() => {}), true, 'callable arguments passed into WrappedFunction should be wrapped in target realm');

var fn = realm.evaluate('() => { return () => { return 1 } }');
assert.sameValue(Object.getPrototypeOf(fn), OtherFunctionPrototype, 'WrappedFunction should be derived from the caller realm');
assert.sameValue(Object.getPrototypeOf(fn()), OtherFunctionPrototype, 'callable results from WrappedFunction should be wrapped in caller realm');

var fn = YetAnotherShadowRealm.prototype.evaluate.call(realm, '() => { return () => { return 1 } }');
assert.sameValue(Object.getPrototypeOf(fn), YetAnotherFunctionPrototype, 'WrappedFunction should be derived from the caller realm');
assert.sameValue(Object.getPrototypeOf(fn()), YetAnotherFunctionPrototype, 'callable results from WrappedFunction should be wrapped in caller realm');