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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function testFunctionNames() {
let descriptor = {
value: '',
writable: false,
enumerable: false,
configurable: true
};
// Functions have a "name" property by default.
assertEquals(
descriptor, Object.getOwnPropertyDescriptor(function(){}, 'name'));
let a = { fn: function(){} };
assertSame('fn', a.fn.name);
descriptor.value = 'fn';
assertEquals(descriptor, Object.getOwnPropertyDescriptor(a.fn, 'name'));
let b = { __proto__: function(){} };
assertSame('', b.__proto__.name);
descriptor.value = '';
assertEquals(
descriptor, Object.getOwnPropertyDescriptor(b.__proto__, 'name'));
let c = { fn: function F(){} };
assertSame('F', c.fn.name);
descriptor.value = 'F';
assertEquals(descriptor, Object.getOwnPropertyDescriptor(c.fn, 'name'));
let d = { __proto__: function E(){} };
assertSame('E', d.__proto__.name);
descriptor.value = 'E';
assertEquals(
descriptor, Object.getOwnPropertyDescriptor(d.__proto__, 'name'));
})();
(function testClassNames() {
let descriptor = {
value: '',
writable: false,
enumerable: false,
configurable: true
};
// Anonymous classes do have a "name" property by default with a value of ''.
assertEquals(descriptor, Object.getOwnPropertyDescriptor(class {}, 'name'));
descriptor.value = 'C';
assertEquals(descriptor, Object.getOwnPropertyDescriptor(class C {}, 'name'));
let a = { fn: class {} };
assertSame('fn', a.fn.name);
descriptor.value = 'fn';
assertEquals(descriptor, Object.getOwnPropertyDescriptor(a.fn, 'name'));
let b = { __proto__: class {} };
assertSame('', b.__proto__.name);
descriptor.value = '';
assertEquals(
descriptor, Object.getOwnPropertyDescriptor(b.__proto__, 'name'));
let c = { fn: class F {} };
assertSame('F', c.fn.name);
descriptor.value = 'F';
assertEquals(descriptor, Object.getOwnPropertyDescriptor(c.fn, 'name'));
let d = { __proto__: class F {} };
assertSame('F', d.__proto__.name);
descriptor.value = 'F';
assertEquals(
descriptor, Object.getOwnPropertyDescriptor(d.__proto__, 'name'));
})();
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