| // Copyright (C) 2016 the Apple Inc. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-object.prototype.tostring |
| description: > |
| Non-string values of `Symbol.toStringTag` property are ignored. |
| info: | |
| ProxyCreate ( target, handler ) |
| |
| [...] |
| 7. If IsCallable(target) is true, then |
| a. Set P.[[Call]] as specified in 9.5.12. |
| |
| Object.prototype.toString ( ) |
| |
| [...] |
| 7. Else if O has a [[Call]] internal method, let builtinTag be "Function". |
| [...] |
| 15. Let tag be ? Get(O, @@toStringTag). |
| 16. If Type(tag) is not String, set tag to builtinTag. |
| 17. Return the string-concatenation of "[object ", tag, and "]". |
| features: [generators, async-functions, Proxy, Symbol.toStringTag] |
| ---*/ |
| |
| var generatorProxy = new Proxy(function* () {}, {}); |
| var generatorProxyProxy = new Proxy(generatorProxy, {}); |
| delete generatorProxy.constructor.prototype[Symbol.toStringTag]; |
| |
| assert.sameValue( |
| Object.prototype.toString.call(generatorProxy), |
| '[object Function]', |
| 'generator function proxy without Symbol.toStringTag' |
| ); |
| assert.sameValue( |
| Object.prototype.toString.call(generatorProxyProxy), |
| '[object Function]', |
| 'proxy for generator function proxy without Symbol.toStringTag' |
| ); |
| |
| var asyncProxy = new Proxy(async function() {}, {}); |
| var asyncProxyProxy = new Proxy(asyncProxy, {}); |
| Object.defineProperty(asyncProxy.constructor.prototype, Symbol.toStringTag, { |
| value: undefined, |
| }); |
| |
| assert.sameValue( |
| Object.prototype.toString.call(asyncProxy), |
| '[object Function]', |
| 'async function proxy without Symbol.toStringTag' |
| ); |
| assert.sameValue( |
| Object.prototype.toString.call(asyncProxyProxy), |
| '[object Function]', |
| 'proxy for async function proxy without Symbol.toStringTag' |
| ); |