393 lines
10 KiB
JavaScript
393 lines
10 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var v = require('es-value-fixtures');
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var forEach = require('for-each');
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var inspect = require('object-inspect');
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var hasOwn = require('hasown');
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var hasPropertyDescriptors = require('has-property-descriptors')();
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var getOwnPropertyDescriptors = require('object.getownpropertydescriptors');
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var ownKeys = require('reflect.ownkeys');
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var defineDataProperty = require('../');
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test('defineDataProperty', function (t) {
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t.test('argument validation', function (st) {
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forEach(v.primitives, function (nonObject) {
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st['throws'](
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// @ts-expect-error
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function () { defineDataProperty(nonObject, 'key', 'value'); },
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TypeError,
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'throws on non-object input: ' + inspect(nonObject)
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);
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});
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forEach(v.nonPropertyKeys, function (nonPropertyKey) {
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st['throws'](
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// @ts-expect-error
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function () { defineDataProperty({}, nonPropertyKey, 'value'); },
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TypeError,
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'throws on non-PropertyKey input: ' + inspect(nonPropertyKey)
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);
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});
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forEach(v.nonBooleans, function (nonBoolean) {
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if (nonBoolean !== null) {
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st['throws'](
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// @ts-expect-error
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function () { defineDataProperty({}, 'key', 'value', nonBoolean); },
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TypeError,
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'throws on non-boolean nonEnumerable: ' + inspect(nonBoolean)
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);
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st['throws'](
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// @ts-expect-error
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function () { defineDataProperty({}, 'key', 'value', false, nonBoolean); },
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TypeError,
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'throws on non-boolean nonWritable: ' + inspect(nonBoolean)
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);
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st['throws'](
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// @ts-expect-error
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function () { defineDataProperty({}, 'key', 'value', false, false, nonBoolean); },
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TypeError,
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'throws on non-boolean nonConfigurable: ' + inspect(nonBoolean)
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);
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}
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});
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st.end();
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});
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t.test('normal data property', function (st) {
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/** @type {Record<PropertyKey, string>} */
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var obj = { existing: 'existing property' };
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st.ok(hasOwn(obj, 'existing'), 'has initial own property');
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st.equal(obj.existing, 'existing property', 'has expected initial value');
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var res = defineDataProperty(obj, 'added', 'added property');
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st.equal(res, void undefined, 'returns `undefined`');
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st.ok(hasOwn(obj, 'added'), 'has expected own property');
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st.equal(obj.added, 'added property', 'has expected value');
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defineDataProperty(obj, 'existing', 'new value');
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st.ok(hasOwn(obj, 'existing'), 'still has expected own property');
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st.equal(obj.existing, 'new value', 'has new expected value');
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defineDataProperty(obj, 'explicit1', 'new value', false);
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st.ok(hasOwn(obj, 'explicit1'), 'has expected own property (explicit enumerable)');
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st.equal(obj.explicit1, 'new value', 'has new expected value (explicit enumerable)');
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defineDataProperty(obj, 'explicit2', 'new value', false, false);
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st.ok(hasOwn(obj, 'explicit2'), 'has expected own property (explicit writable)');
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st.equal(obj.explicit2, 'new value', 'has new expected value (explicit writable)');
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defineDataProperty(obj, 'explicit3', 'new value', false, false, false);
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st.ok(hasOwn(obj, 'explicit3'), 'has expected own property (explicit configurable)');
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st.equal(obj.explicit3, 'new value', 'has new expected value (explicit configurable)');
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st.end();
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});
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t.test('loose mode', { skip: !hasPropertyDescriptors }, function (st) {
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var obj = { existing: 'existing property' };
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defineDataProperty(obj, 'added', 'added value 1', true, null, null, true);
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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existing: {
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configurable: true,
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enumerable: true,
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value: 'existing property',
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writable: true
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},
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added: {
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configurable: true,
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enumerable: !hasPropertyDescriptors,
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value: 'added value 1',
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writable: true
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}
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},
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'in loose mode, obj still adds property 1'
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);
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defineDataProperty(obj, 'added', 'added value 2', false, true, null, true);
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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existing: {
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configurable: true,
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enumerable: true,
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value: 'existing property',
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writable: true
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},
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added: {
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configurable: true,
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enumerable: true,
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value: 'added value 2',
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writable: !hasPropertyDescriptors
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}
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},
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'in loose mode, obj still adds property 2'
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);
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defineDataProperty(obj, 'added', 'added value 3', false, false, true, true);
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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existing: {
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configurable: true,
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enumerable: true,
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value: 'existing property',
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writable: true
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},
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added: {
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configurable: !hasPropertyDescriptors,
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enumerable: true,
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value: 'added value 3',
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writable: true
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}
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},
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'in loose mode, obj still adds property 3'
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);
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st.end();
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});
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t.test('non-normal data property, ES3', { skip: hasPropertyDescriptors }, function (st) {
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/** @type {Record<PropertyKey, string>} */
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var obj = { existing: 'existing property' };
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st['throws'](
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function () { defineDataProperty(obj, 'added', 'added value', true); },
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SyntaxError,
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'nonEnumerable throws a Syntax Error'
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);
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st['throws'](
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function () { defineDataProperty(obj, 'added', 'added value', false, true); },
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SyntaxError,
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'nonWritable throws a Syntax Error'
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);
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st['throws'](
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function () { defineDataProperty(obj, 'added', 'added value', false, false, true); },
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SyntaxError,
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'nonWritable throws a Syntax Error'
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);
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st.deepEqual(
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ownKeys(obj),
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['existing'],
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'obj still has expected keys'
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);
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st.equal(obj.existing, 'existing property', 'obj still has expected values');
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st.end();
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});
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t.test('new non-normal data property, ES5+', { skip: !hasPropertyDescriptors }, function (st) {
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/** @type {Record<PropertyKey, string>} */
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var obj = { existing: 'existing property' };
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defineDataProperty(obj, 'nonEnum', null, true);
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defineDataProperty(obj, 'nonWrit', null, false, true);
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defineDataProperty(obj, 'nonConf', null, false, false, true);
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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existing: {
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configurable: true,
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enumerable: true,
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value: 'existing property',
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writable: true
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},
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nonEnum: {
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configurable: true,
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enumerable: false,
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value: null,
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writable: true
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},
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nonWrit: {
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configurable: true,
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enumerable: true,
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value: null,
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writable: false
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},
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nonConf: {
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configurable: false,
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enumerable: true,
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value: null,
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writable: true
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}
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},
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'obj has expected property descriptors'
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);
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st.end();
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});
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t.test('existing non-normal data property, ES5+', { skip: !hasPropertyDescriptors }, function (st) {
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// test case changing an existing non-normal property
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/** @type {Record<string, null | string>} */
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var obj = {};
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Object.defineProperty(obj, 'nonEnum', { configurable: true, enumerable: false, value: null, writable: true });
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Object.defineProperty(obj, 'nonWrit', { configurable: true, enumerable: true, value: null, writable: false });
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Object.defineProperty(obj, 'nonConf', { configurable: false, enumerable: true, value: null, writable: true });
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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nonEnum: {
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configurable: true,
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enumerable: false,
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value: null,
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writable: true
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},
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nonWrit: {
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configurable: true,
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enumerable: true,
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value: null,
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writable: false
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},
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nonConf: {
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configurable: false,
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enumerable: true,
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value: null,
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writable: true
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}
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},
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'obj initially has expected property descriptors'
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);
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defineDataProperty(obj, 'nonEnum', 'new value', false);
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defineDataProperty(obj, 'nonWrit', 'new value', false, false);
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st['throws'](
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function () { defineDataProperty(obj, 'nonConf', 'new value', false, false, false); },
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TypeError,
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'can not alter a nonconfigurable property'
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);
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st.deepEqual(
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getOwnPropertyDescriptors(obj),
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{
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nonEnum: {
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configurable: true,
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enumerable: true,
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value: 'new value',
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writable: true
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},
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nonWrit: {
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configurable: true,
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enumerable: true,
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value: 'new value',
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writable: true
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},
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nonConf: {
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configurable: false,
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enumerable: true,
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value: null,
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writable: true
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}
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},
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'obj ends up with expected property descriptors'
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);
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st.end();
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});
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t.test('frozen object, ES5+', { skip: !hasPropertyDescriptors }, function (st) {
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var frozen = Object.freeze({ existing: true });
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st['throws'](
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function () { defineDataProperty(frozen, 'existing', 'new value'); },
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TypeError,
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'frozen object can not modify an existing property'
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);
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st['throws'](
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function () { defineDataProperty(frozen, 'new', 'new property'); },
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TypeError,
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'frozen object can not add a new property'
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);
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st.end();
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});
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t.test('sealed object, ES5+', { skip: !hasPropertyDescriptors }, function (st) {
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var sealed = Object.seal({ existing: true });
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st.deepEqual(
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Object.getOwnPropertyDescriptor(sealed, 'existing'),
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{
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configurable: false,
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enumerable: true,
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value: true,
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writable: true
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},
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'existing value on sealed object has expected descriptor'
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);
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defineDataProperty(sealed, 'existing', 'new value');
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st.deepEqual(
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Object.getOwnPropertyDescriptor(sealed, 'existing'),
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{
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configurable: false,
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enumerable: true,
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value: 'new value',
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writable: true
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},
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'existing value on sealed object has changed descriptor'
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);
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st['throws'](
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function () { defineDataProperty(sealed, 'new', 'new property'); },
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TypeError,
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'sealed object can not add a new property'
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);
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st.end();
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});
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t.test('nonextensible object, ES5+', { skip: !hasPropertyDescriptors }, function (st) {
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var nonExt = Object.preventExtensions({ existing: true });
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st.deepEqual(
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Object.getOwnPropertyDescriptor(nonExt, 'existing'),
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{
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configurable: true,
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enumerable: true,
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value: true,
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writable: true
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},
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'existing value on non-extensible object has expected descriptor'
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);
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defineDataProperty(nonExt, 'existing', 'new value', true);
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st.deepEqual(
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Object.getOwnPropertyDescriptor(nonExt, 'existing'),
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{
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configurable: true,
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enumerable: false,
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value: 'new value',
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writable: true
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},
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'existing value on non-extensible object has changed descriptor'
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);
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st['throws'](
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function () { defineDataProperty(nonExt, 'new', 'new property'); },
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TypeError,
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'non-extensible object can not add a new property'
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);
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st.end();
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});
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t.end();
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});
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