test262/test/language/computed-property-names/to-name-side-effects/class.js

46 lines
1.4 KiB
JavaScript

// Copyright (C) 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: >
to name, accessor side effects 3
includes: [compareArray.js]
---*/
var counter = 0;
var key1ToString = [];
var key2ToString = [];
var key1 = {
toString: function() {
key1ToString.push(counter);
counter += 1;
return 'b';
}
};
var key2 = {
toString: function() {
key2ToString.push(counter);
counter += 1;
return 'd';
}
};
class C {
a() { return 'A'; }
[key1]() { return 'B'; }
c() { return 'C'; }
[key2]() { return 'D'; }
}
assert.compareArray(key1ToString, [0], 'The value of key1ToString is expected to be [0]');
assert.compareArray(key2ToString, [1], 'The value of key2ToString is expected to be [1]');
assert.sameValue(counter, 2, 'The value of counter is expected to be 2');
assert.sameValue(new C().a(), 'A', 'new C().a() must return "A"');
assert.sameValue(new C().b(), 'B', 'new C().b() must return "B"');
assert.sameValue(new C().c(), 'C', 'new C().c() must return "C"');
assert.sameValue(new C().d(), 'D', 'new C().d() must return "D"');
assert.sameValue(Object.keys(C.prototype).length, 0, 'The value of Object.keys(C.prototype).length is expected to be 0');
assert.compareArray(
Object.getOwnPropertyNames(C.prototype), ['constructor', 'a', 'b', 'c', 'd'],
'Object.getOwnPropertyNames(C.prototype) must return ["constructor", "a", "b", "c", "d"]'
);