methods.js (1587B)
1 // Copyright (C) 2014 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 es6id: 14.5 5 description: > 6 class methods 7 ---*/ 8 function assertMethodDescriptor(object, name) { 9 var desc = Object.getOwnPropertyDescriptor(object, name); 10 assert.sameValue(desc.configurable, true, "The value of `desc.configurable` is `true`"); 11 assert.sameValue(desc.enumerable, false, "The value of `desc.enumerable` is `false`"); 12 assert.sameValue(desc.writable, true, "The value of `desc.writable` is `true`"); 13 assert.sameValue(typeof desc.value, 'function', "`typeof desc.value` is `'function'`"); 14 assert.sameValue('prototype' in desc.value, false, "The result of `'prototype' in desc.value` is `false`"); 15 } 16 17 class C { 18 method() { return 1; } 19 static staticMethod() { return 2; } 20 method2() { return 3; } 21 static staticMethod2() { return 4; } 22 } 23 24 assertMethodDescriptor(C.prototype, 'method'); 25 assertMethodDescriptor(C.prototype, 'method2'); 26 assertMethodDescriptor(C, 'staticMethod'); 27 assertMethodDescriptor(C, 'staticMethod2'); 28 29 assert.sameValue(new C().method(), 1, "`new C().method()` returns `1`. Defined as `method() { return 1; }`"); 30 assert.sameValue(C.staticMethod(), 2, "`C.staticMethod()` returns `2`. Defined as `static staticMethod() { return 2; }`"); 31 assert.sameValue(new C().method2(), 3, "`new C().method2()` returns `3`. Defined as `method2() { return 3; }`"); 32 assert.sameValue(C.staticMethod2(), 4, "`C.staticMethod2()` returns `4`. Defined as `static staticMethod2() { return 4; }`"); 33 34 reportCompare(0, 0);