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These tests are derived from the following files within the Google V8 project: test/mjsunit/harmony/private.js
51 lines
1.4 KiB
JavaScript
51 lines
1.4 KiB
JavaScript
// Copyright (C) Copyright 2013 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 19.1.2.4
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description: >
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Symbol used as property for default data property definition
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flags: [onlyStrict]
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---*/
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var sym = Symbol();
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var obj = {};
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Object.defineProperty(obj, sym, {
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value: 1,
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});
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assert.sameValue(sym in obj, true, "The result of `sym in obj` is `true`");
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assert.sameValue(
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Object.hasOwnProperty.call(obj, sym),
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true,
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"`Object.hasOwnProperty.call(obj, sym)` returns `true`"
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);
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var desc = Object.getOwnPropertyDescriptor(obj, sym);
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assert.sameValue(desc.value, 1, "The value of `desc.value` is `1`");
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assert.sameValue(desc.configurable, false, "The value of `desc.configurable` is `false`");
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assert.sameValue(desc.writable, false, "The value of `desc.writable` is `false`");
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assert.sameValue(desc.enumerable, false, "The value of `desc.enumerable` is `false`");
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assert.sameValue(
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Object.prototype.propertyIsEnumerable.call(obj, sym),
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false,
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"`Object.prototype.propertyIsEnumerable.call(obj, sym)` returns `false`"
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);
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assert.throws(TypeError, function() {
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delete obj[sym];
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});
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assert.notSameValue(
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Object.getOwnPropertyDescriptor(obj, sym),
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undefined,
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"`Object.getOwnPropertyDescriptor(obj, sym)` does not return `undefined`"
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);
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assert.throws(TypeError, function() {
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obj[sym] = 2;
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});
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assert.sameValue(obj[sym], 1, "The value of `obj[sym]` is `1`");
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