test262/test/language/computed-property-names/class/static/method-symbol.js

39 lines
1.2 KiB
JavaScript

// Copyright (C) Copyright 2014 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 12.2.5
description: >
In a class, static computed property method names can be a symbol
includes: [compareArray.js]
---*/
var sym1 = Symbol();
var sym2 = Symbol();
class C {
static a() { return 'A'; }
static [sym1]() { return 'B'; }
static c() { return 'C'; }
static [sym2]() { return 'D'; }
}
assert.sameValue(C.a(), 'A');
assert.sameValue(C[sym1](), 'B');
assert.sameValue(C.c(), 'C');
assert.sameValue(C[sym2](), 'D');
assert(compareArray(Object.keys(C), []));
assert(compareArray(Object.getOwnPropertyNames(C), ['length', 'name', 'prototype', 'a', 'c']));
// compareArray expects arguments to be sorted,
// which will cause an array containing symbols to
// throw an exception when toString() is called.
//
// Since there is no guarantee of order:
//
// - Assert only that the symbol is present
// - Assert that the length is correct
//
var symbols = Object.getOwnPropertySymbols(C);
assert(symbols.indexOf(sym1) !== -1);
assert(symbols.indexOf(sym2) !== -1);
assert.sameValue(symbols.length, 2);