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  1. 'use strict';
  2. var test = require('tape');
  3. require('./_tape');
  4. var assign = require('object.assign');
  5. var gOPDs = require('object.getownpropertydescriptors');
  6. var hasSymbols = require('has-symbols')();
  7. var hasTypedArrays = require('has-typed-arrays')();
  8. var semver = require('semver');
  9. var keys = require('object-keys');
  10. var availableTypedArrays = require('available-typed-arrays')();
  11. var forEach = require('for-each');
  12. var hasProto = require('has-proto')();
  13. var defineDataProperty = require('define-data-property');
  14. var safeBuffer = typeof Buffer === 'function' ? Buffer.from && Buffer.from.length > 1 ? Buffer.from : Buffer : null;
  15. var buffersAreTypedArrays = typeof Buffer === 'function' && new Buffer(0) instanceof Uint8Array;
  16. var isNode = typeof process === 'object' && typeof process.version === 'string';
  17. function tag(obj, value) {
  18. if (hasSymbols && Symbol.toStringTag && Object.defineProperty) {
  19. Object.defineProperty(obj, Symbol.toStringTag, {
  20. value: value
  21. });
  22. }
  23. return obj;
  24. }
  25. test('equal', function (t) {
  26. t.deepEqualTest(
  27. { a: [2, 3], b: [4] },
  28. { a: [2, 3], b: [4] },
  29. 'two equal objects',
  30. true,
  31. true,
  32. false
  33. );
  34. var obj1 = { a: [2, 3], b: [4] };
  35. var obj2 = { b: [4], a: [2, 3] };
  36. t.notDeepEqual(keys(obj1), keys(obj2), 'keys are in a different order');
  37. t.deepEqual(keys(obj1), keys(obj2).reverse(), 'keys are in opposite order');
  38. t.deepEqualTest(
  39. obj1,
  40. obj2,
  41. 'two equal objects, in different order',
  42. true,
  43. true
  44. );
  45. t.deepEqualTest(
  46. { a: 2, b: '4' },
  47. { a: 2, b: 4 },
  48. 'two loosely equal, strictly inequal objects',
  49. true,
  50. false
  51. );
  52. t.deepEqualTest(
  53. { a: 2, b: 4 },
  54. { a: 2, B: 4 },
  55. 'two inequal objects',
  56. false,
  57. false
  58. );
  59. t.deepEqualTest(
  60. '-000',
  61. false,
  62. '`false` and `"-000"`',
  63. true,
  64. false
  65. );
  66. t.end();
  67. });
  68. test('Maps', { skip: typeof Map !== 'function' }, function (t) {
  69. t.deepEqualTest(
  70. new Map([['a', 1], ['b', 2]]),
  71. new Map([['b', 2], ['a', 1]]),
  72. 'two equal Maps',
  73. true,
  74. true
  75. );
  76. t.deepEqualTest(
  77. new Map([['a', [1, 2]]]),
  78. new Map([['a', [2, 1]]]),
  79. 'two Maps with inequal values on the same key',
  80. true,
  81. true
  82. );
  83. t.deepEqualTest(
  84. new Map([['a', 1]]),
  85. new Map([['b', 1]]),
  86. 'two inequal Maps',
  87. true,
  88. true
  89. );
  90. t.deepEqualTest(
  91. new Map([[{}, 3], [{}, 2], [{}, 1]]),
  92. new Map([[{}, 1], [{}, 2], [{}, 3]]),
  93. 'two equal Maps in different orders with object keys',
  94. true,
  95. true
  96. );
  97. t.deepEqualTest(
  98. new Map([[undefined, undefined]]),
  99. new Map([[undefined, null]]),
  100. 'undefined keys, nullish values, loosely equal, strictly inequal',
  101. true,
  102. true
  103. );
  104. t.deepEqualTest(
  105. new Map([[{}, null], [true, 2], [{}, 1], [undefined, {}]]),
  106. new Map([[{}, 1], [true, 2], [{}, null], [undefined, {}]]),
  107. 'two equal Maps in different orders with primitive keys',
  108. true,
  109. true
  110. );
  111. t.deepEqualTest(
  112. new Map([[false, 3], [{}, 2], [{}, 1]]),
  113. new Map([[{}, 1], [{}, 2], [false, 3]]),
  114. 'two equal Maps in different orders with a mix of keys',
  115. true,
  116. true
  117. );
  118. t.deepEqualTest(
  119. new Map([[null, undefined]]),
  120. new Map([[null, null]]),
  121. 'null keys, nullish values, loosely equal, strictly inequal',
  122. true,
  123. true
  124. );
  125. t.deepEqualTest(
  126. new Map([[undefined, 3]]),
  127. new Map([[null, 3]]),
  128. 'nullish keys, loosely equal, strictly inequal',
  129. true,
  130. true
  131. );
  132. t.deepEqualTest(
  133. new Map([[{}, null], [true, 2], [{}, 1], [undefined, {}]]),
  134. new Map([[{}, 1], [true, 2], [{}, null], [undefined, {}]]),
  135. 'two equal Maps in different orders with primitive keys',
  136. true,
  137. true
  138. );
  139. t.deepEqualTest(
  140. new Map([[false, 3], [{}, 2], [{}, 1]]),
  141. new Map([[{}, 1], [{}, 2], [false, 3]]),
  142. 'two equal Maps in different orders with a mix of keys',
  143. true,
  144. true
  145. );
  146. t.deepEqualTest(
  147. new Map(),
  148. new Map([[{}, 1]]),
  149. 'two inequal Maps',
  150. true,
  151. true
  152. );
  153. t.deepEqualTest(
  154. new Map([[{}, null], [false, 3]]),
  155. new Map([[{}, null], [true, 2]]),
  156. 'two inequal maps, same size, primitive key, start with object key',
  157. true,
  158. true
  159. );
  160. t.deepEqualTest(
  161. new Map([[false, 3], [{}, null]]),
  162. new Map([[true, 2], [{}, null]]),
  163. 'two inequal maps, same size, primitive key, start with primitive key',
  164. true,
  165. true
  166. );
  167. t.deepEqualTest(
  168. new Map([[undefined, null], ['+000', 2]]),
  169. new Map([[null, undefined], [false, '2']]),
  170. 'primitive comparisons',
  171. true,
  172. true
  173. );
  174. t.end();
  175. });
  176. test('WeakMaps', { skip: typeof WeakMap !== 'function' }, function (t) {
  177. t.deepEqualTest(
  178. new WeakMap([[Object, null], [Function, true]]),
  179. new WeakMap([[Function, true], [Object, null]]),
  180. 'two equal WeakMaps',
  181. true,
  182. true
  183. );
  184. t.deepEqualTest(
  185. new WeakMap([[Object, null]]),
  186. new WeakMap([[Object, true]]),
  187. 'two WeakMaps with inequal values on the same key',
  188. true,
  189. true
  190. );
  191. t.deepEqualTest(
  192. new WeakMap([[Object, null], [Function, true]]),
  193. new WeakMap([[Object, null]]),
  194. 'two inequal WeakMaps',
  195. true,
  196. true
  197. );
  198. t.end();
  199. });
  200. test('Sets', { skip: typeof Set !== 'function' }, function (t) {
  201. t.deepEqualTest(
  202. new Set(['a', 1, 'b', 2]),
  203. new Set(['b', 2, 'a', 1]),
  204. 'two equal Sets',
  205. true,
  206. true
  207. );
  208. t.deepEqualTest(
  209. new Set(['a', 1]),
  210. new Set(['b', 1]),
  211. 'two inequal Sets',
  212. true,
  213. true
  214. );
  215. t.deepEqualTest(
  216. new Set([{}, 1, {}, {}, 2]),
  217. new Set([{}, 1, {}, 2, {}]),
  218. 'two equal Sets in different orders',
  219. true,
  220. true
  221. );
  222. t.deepEqualTest(
  223. new Set(),
  224. new Set([1]),
  225. 'two inequally sized Sets',
  226. true,
  227. true
  228. );
  229. t.deepEqualTest(
  230. new Set([{ a: 1 }, 2]),
  231. new Set(['2', { a: '1' }]),
  232. 'two loosely equal, strictly inequal Sets',
  233. true,
  234. true
  235. );
  236. t.deepEqualTest(
  237. new Set([{ a: 1 }, 2]),
  238. new Set(['2', { a: 2 }]),
  239. 'two inequal Sets',
  240. true,
  241. true
  242. );
  243. t.deepEqualTest(
  244. new Set([null, '', 1, 5, 2, false]),
  245. new Set([undefined, 0, '5', true, '2', '-000']),
  246. 'more primitive comparisons',
  247. true,
  248. true
  249. );
  250. t.end();
  251. });
  252. test('Set and Map', { skip: !Object.defineProperty || typeof Set !== 'function' || typeof Map !== 'function' }, function (t) {
  253. t.deepEqualTest(
  254. new Set(),
  255. new Map(),
  256. 'Map and Set',
  257. true,
  258. true
  259. );
  260. var maplikeSet = new Set();
  261. Object.defineProperty(maplikeSet, 'constructor', { enumerable: false, value: Map });
  262. maplikeSet.__proto__ = Map.prototype; // eslint-disable-line no-proto
  263. t.deepEqualTest(
  264. maplikeSet,
  265. new Map(),
  266. 'Map-like Set, and Map',
  267. true,
  268. true
  269. );
  270. t.end();
  271. });
  272. test('WeakSets', { skip: typeof WeakSet !== 'function' }, function (t) {
  273. t.deepEqualTest(
  274. new WeakSet([Object, Function]),
  275. new WeakSet([Function, Object]),
  276. 'two equal WeakSets',
  277. true,
  278. true
  279. );
  280. t.deepEqualTest(
  281. new WeakSet([Object, Function]),
  282. new WeakSet([Object]),
  283. 'two inequal WeakSets',
  284. true,
  285. true
  286. );
  287. t.end();
  288. });
  289. test('not equal', function (t) {
  290. t.deepEqualTest(
  291. { x: 5, y: [6] },
  292. { x: 5, y: 6 },
  293. 'two inequal objects are',
  294. false,
  295. false
  296. );
  297. t.end();
  298. });
  299. test('nested nulls', function (t) {
  300. t.deepEqualTest(
  301. [null, null, null],
  302. [null, null, null],
  303. 'same-length arrays of nulls',
  304. true,
  305. true,
  306. true
  307. );
  308. t.end();
  309. });
  310. test('objects with strings vs numbers', function (t) {
  311. t.deepEqualTest(
  312. [{ a: 3 }, { b: 4 }],
  313. [{ a: '3' }, { b: '4' }],
  314. 'objects with equivalent string/number values',
  315. true,
  316. false
  317. );
  318. t.end();
  319. });
  320. test('non-objects', function (t) {
  321. t.deepEqualTest(3, 3, 'same numbers', true, true, true);
  322. t.deepEqualTest('beep', 'beep', 'same strings', true, true, true);
  323. t.deepEqualTest('3', 3, 'numeric string and number', true, false);
  324. t.deepEqualTest('3', [3], 'numeric string and array containing number', false, false);
  325. t.deepEqualTest(3, [3], 'number and array containing number', false, false);
  326. t.end();
  327. });
  328. test('infinities', function (t) {
  329. t.deepEqualTest(Infinity, Infinity, '∞ and ∞', true, true, true);
  330. t.deepEqualTest(-Infinity, -Infinity, '-∞ and -∞', true, true, true);
  331. t.deepEqualTest(Infinity, -Infinity, '∞ and -∞', false, false);
  332. t.end();
  333. });
  334. test('arguments class', function (t) {
  335. function getArgs() {
  336. return arguments;
  337. }
  338. t.deepEqualTest(
  339. getArgs(1, 2, 3),
  340. getArgs(1, 2, 3),
  341. 'equivalent arguments objects are equal',
  342. true,
  343. true,
  344. true
  345. );
  346. t.deepEqualTest(
  347. getArgs(1, 2, 3),
  348. [1, 2, 3],
  349. 'array and arguments with same contents',
  350. false,
  351. false
  352. );
  353. var args = getArgs();
  354. var notArgs = tag({ length: 0 }, 'Arguments');
  355. t.deepEqualTest(
  356. args,
  357. notArgs,
  358. 'args and similar arraylike object',
  359. false,
  360. false
  361. );
  362. t.end();
  363. });
  364. test('Dates', function (t) {
  365. var d0 = new Date(1387585278000);
  366. var d1 = new Date('Fri Dec 20 2013 16:21:18 GMT-0800 (PST)');
  367. t.deepEqualTest(d0, d1, 'two Dates with the same timestamp', true, true);
  368. d1.a = true;
  369. t.deepEqualTest(d0, d1, 'two Dates with the same timestamp but different own properties', true, true);
  370. t.test('overriding `getTime`', { skip: !Object.defineProperty }, function (st) {
  371. var a = new Date('2000');
  372. var b = new Date('2000');
  373. Object.defineProperty(a, 'getTime', { value: function () { return 5; } });
  374. st.deepEqualTest(a, b, 'two Dates with the same timestamp but one has overridden `getTime`', true, true);
  375. st.end();
  376. });
  377. t.test('fake Date', { skip: !hasProto }, function (st) {
  378. var a = new Date(2000);
  379. var b = tag(Object.create(
  380. a.__proto__, // eslint-disable-line no-proto
  381. gOPDs(a)
  382. ), 'Date');
  383. st.deepEqualTest(
  384. a,
  385. b,
  386. 'Date, and fake Date',
  387. true,
  388. true
  389. );
  390. st.end();
  391. });
  392. var a = new Date('2000');
  393. var b = new Date('2000');
  394. b.foo = true;
  395. t.deepEqualTest(
  396. a,
  397. b,
  398. 'two identical Dates, one with an extra property',
  399. true,
  400. true
  401. );
  402. t.deepEqualTest(
  403. new Date('2000'),
  404. new Date('2001'),
  405. 'two inequal Dates',
  406. false,
  407. false
  408. );
  409. t.end();
  410. });
  411. test('buffers', { skip: typeof Buffer !== 'function' }, function (t) {
  412. /* eslint no-buffer-constructor: 1, new-cap: 1 */
  413. t.deepEqualTest(
  414. safeBuffer('xyz'),
  415. safeBuffer('xyz'),
  416. 'buffers with same contents are equal',
  417. true,
  418. true
  419. );
  420. t.deepEqualTest(
  421. safeBuffer('xyz'),
  422. safeBuffer('xyy'),
  423. 'buffers with same length and different contents are inequal',
  424. false,
  425. false
  426. );
  427. t.deepEqualTest(
  428. safeBuffer('xyz'),
  429. safeBuffer('xy'),
  430. 'buffers with different length are inequal',
  431. false,
  432. false
  433. );
  434. t.deepEqualTest(
  435. safeBuffer('abc'),
  436. safeBuffer('xyz'),
  437. 'buffers with different contents',
  438. false,
  439. false
  440. );
  441. var emptyBuffer = safeBuffer('');
  442. t.deepEqualTest(
  443. emptyBuffer,
  444. [],
  445. 'empty buffer and empty array',
  446. false,
  447. false
  448. );
  449. t.test('bufferlikes', { skip: !Object.defineProperty || !hasTypedArrays }, function (st) {
  450. var fakeBuffer = {
  451. 0: 'a',
  452. length: 1,
  453. __proto__: emptyBuffer.__proto__, // eslint-disable-line no-proto
  454. copy: emptyBuffer.copy,
  455. slice: emptyBuffer.slice
  456. };
  457. Object.defineProperty(fakeBuffer, '0', { enumerable: false });
  458. Object.defineProperty(fakeBuffer, 'length', { enumerable: false });
  459. Object.defineProperty(fakeBuffer, 'copy', { enumerable: false });
  460. Object.defineProperty(fakeBuffer, 'slice', { enumerable: false });
  461. st.deepEqualTest(
  462. safeBuffer('a'),
  463. fakeBuffer,
  464. 'real buffer, and mildly fake buffer',
  465. false,
  466. false
  467. );
  468. st.test('bufferlike', { skip: buffersAreTypedArrays ? !hasSymbols || !Symbol.toStringTag : false }, function (s2t) {
  469. var bufferlike = buffersAreTypedArrays ? new Uint8Array() : {};
  470. Object.defineProperty(bufferlike, 'length', {
  471. enumerable: false,
  472. value: bufferlike.length || 0
  473. });
  474. Object.defineProperty(bufferlike, 'copy', {
  475. enumerable: false,
  476. value: emptyBuffer.copy
  477. });
  478. bufferlike.__proto__ = emptyBuffer.__proto__; // eslint-disable-line no-proto
  479. s2t.deepEqualTest(
  480. emptyBuffer,
  481. bufferlike,
  482. 'empty buffer and empty bufferlike',
  483. true,
  484. true
  485. );
  486. s2t.end();
  487. });
  488. st.end();
  489. });
  490. t.end();
  491. });
  492. test('Arrays', function (t) {
  493. var a = [];
  494. var b = [];
  495. b.foo = true;
  496. t.deepEqualTest(
  497. a,
  498. b,
  499. 'two identical arrays, one with an extra property',
  500. false,
  501. false
  502. );
  503. t.end();
  504. });
  505. test('booleans', function (t) {
  506. t.deepEqualTest(
  507. true,
  508. true,
  509. 'trues',
  510. true,
  511. true,
  512. false
  513. );
  514. t.deepEqualTest(
  515. false,
  516. false,
  517. 'falses',
  518. true,
  519. true,
  520. false
  521. );
  522. t.deepEqualTest(
  523. true,
  524. false,
  525. 'true and false',
  526. false,
  527. false
  528. );
  529. t.end();
  530. });
  531. test('booleans and arrays', function (t) {
  532. t.deepEqualTest(
  533. true,
  534. [],
  535. 'true and an empty array',
  536. false,
  537. false
  538. );
  539. t.deepEqualTest(
  540. false,
  541. [],
  542. 'false and an empty array',
  543. true,
  544. false
  545. );
  546. t.end();
  547. });
  548. test('arrays initiated', function (t) {
  549. var a0 = [
  550. undefined,
  551. null,
  552. -1,
  553. 0,
  554. 1,
  555. false,
  556. true,
  557. undefined,
  558. '',
  559. 'abc',
  560. null,
  561. undefined
  562. ];
  563. var a1 = [
  564. undefined,
  565. null,
  566. -1,
  567. 0,
  568. 1,
  569. false,
  570. true,
  571. undefined,
  572. '',
  573. 'abc',
  574. null,
  575. undefined
  576. ];
  577. t.deepEqualTest(
  578. a0,
  579. a1,
  580. 'arrays with equal contents are equal',
  581. true,
  582. true,
  583. true
  584. );
  585. t.end();
  586. });
  587. test('arrays assigned', function (t) {
  588. var a0 = [
  589. undefined,
  590. null,
  591. -1,
  592. 0,
  593. 1,
  594. false,
  595. true,
  596. undefined,
  597. '',
  598. 'abc',
  599. null,
  600. undefined
  601. ];
  602. var a1 = [];
  603. a1[0] = undefined;
  604. a1[1] = null;
  605. a1[2] = -1;
  606. a1[3] = 0;
  607. a1[4] = 1;
  608. a1[5] = false;
  609. a1[6] = true;
  610. a1[7] = undefined;
  611. a1[8] = '';
  612. a1[9] = 'abc';
  613. a1[10] = null;
  614. a1[11] = undefined;
  615. a1.length = 12;
  616. t.deepEqualTest(a0, a1, 'a literal array and an assigned array', true, true);
  617. t.end();
  618. });
  619. test('arrays push', function (t) {
  620. var a0 = [
  621. undefined,
  622. null,
  623. -1,
  624. 0,
  625. 1,
  626. false,
  627. true,
  628. undefined,
  629. '',
  630. 'abc',
  631. null,
  632. undefined
  633. ],
  634. a1 = [];
  635. a1.push(undefined);
  636. a1.push(null);
  637. a1.push(-1);
  638. a1.push(0);
  639. a1.push(1);
  640. a1.push(false);
  641. a1.push(true);
  642. a1.push(undefined);
  643. a1.push('');
  644. a1.push('abc');
  645. a1.push(null);
  646. a1.push(undefined);
  647. a1.length = 12;
  648. t.deepEqualTest(a0, a1, 'a literal array and a pushed array', true, true);
  649. t.end();
  650. });
  651. test('null == undefined', function (t) {
  652. t.deepEqualTest(null, undefined, 'null and undefined', true, false);
  653. t.deepEqualTest([null], [undefined], '[null] and [undefined]', true, false);
  654. t.end();
  655. });
  656. // node 14 changed `deepEqual` to make two NaNs loosely equal. TODO, semver-major: change deep-equal in the same way.
  657. var isNode14 = isNode && process.env.ASSERT && semver.satisfies(process.version, '>= 14');
  658. test('NaNs', function (t) {
  659. t.deepEqualTest(
  660. NaN,
  661. NaN,
  662. 'two NaNs',
  663. isNode14,
  664. true
  665. );
  666. t.deepEqualTest(
  667. { a: NaN },
  668. { a: NaN },
  669. 'two equiv objects with a NaN value',
  670. isNode14,
  671. true
  672. );
  673. t.deepEqualTest(NaN, 1, 'NaN and 1', false, false);
  674. t.end();
  675. });
  676. test('zeroes', function (t) {
  677. t.deepEqualTest(0, -0, '0 and -0', true, false);
  678. t.deepEqualTest({ a: 0 }, { a: -0 }, 'two objects with a same-keyed 0/-0 value', true, false);
  679. t.end();
  680. });
  681. test('Object.create', { skip: !Object.create }, function (t) {
  682. var a = { a: 'A' };
  683. var b = Object.create(a);
  684. b.b = 'B';
  685. var c = Object.create(a);
  686. c.b = 'C';
  687. t.deepEqualTest(
  688. b,
  689. c,
  690. 'two objects with the same [[Prototype]] but a different own property',
  691. false,
  692. false
  693. );
  694. t.end();
  695. });
  696. test('Object.create(null)', { skip: !Object.create }, function (t) {
  697. t.deepEqualTest(
  698. Object.create(null),
  699. Object.create(null),
  700. 'two empty null objects',
  701. true,
  702. true,
  703. true
  704. );
  705. t.deepEqualTest(
  706. Object.create(null, { a: { value: 'b' } }),
  707. Object.create(null, { a: { value: 'b' } }),
  708. 'two null objects with the same property pair',
  709. true,
  710. true,
  711. true
  712. );
  713. t.end();
  714. });
  715. test('regexes vs dates', function (t) {
  716. var d = new Date(1387585278000);
  717. var r = /abc/;
  718. t.deepEqualTest(d, r, 'Date and RegExp', false, false);
  719. t.end();
  720. });
  721. test('regexen', function (t) {
  722. t.deepEqualTest(/abc/, /xyz/, 'two different regexes', false, false);
  723. t.deepEqualTest(/abc/, /abc/, 'two abc regexes', true, true, false);
  724. t.deepEqualTest(/xyz/, /xyz/, 'two xyz regexes', true, true, false);
  725. t.test('fake RegExp', { skip: !hasProto }, function (st) {
  726. var a = /abc/g;
  727. var b = tag(Object.create(
  728. a.__proto__, // eslint-disable-line no-proto
  729. gOPDs(a)
  730. ), 'RegExp');
  731. st.deepEqualTest(a, b, 'regex and fake regex', false, false);
  732. st.end();
  733. });
  734. var a = /abc/gi;
  735. var b = /abc/gi;
  736. b.foo = true;
  737. t.deepEqualTest(
  738. a,
  739. b,
  740. 'two identical regexes, one with an extra property',
  741. true,
  742. true
  743. );
  744. var c = /abc/g;
  745. var d = /abc/i;
  746. t.deepEqualTest(
  747. c,
  748. d,
  749. 'two regexes with the same source but different flags',
  750. false,
  751. false
  752. );
  753. t.end();
  754. });
  755. test('object literals', function (t) {
  756. t.deepEqualTest(
  757. { prototype: 2 },
  758. { prototype: '2' },
  759. 'two loosely equal, strictly inequal prototype properties',
  760. false,
  761. false
  762. );
  763. t.end();
  764. });
  765. test('arrays and objects', function (t) {
  766. t.deepEqualTest([], {}, 'empty array and empty object', true, true);
  767. t.deepEqualTest([], { length: 0 }, 'empty array and empty arraylike object', false, false);
  768. t.deepEqualTest([1], { 0: 1 }, 'array and similar object', true, true);
  769. t.end();
  770. });
  771. test('functions', function (t) {
  772. function f() {}
  773. t.deepEqualTest(f, f, 'a function and itself', true, true, true);
  774. t.deepEqualTest([f], [f], 'a function and itself in an array', true, true, true);
  775. t.deepEqualTest(function () {}, function () {}, 'two distinct functions', false, false, true);
  776. t.deepEqualTest([function () {}], [function () {}], 'two distinct functions in an array', false, false, true);
  777. t.deepEqualTest(f, {}, 'function and object', false, false, true);
  778. t.deepEqualTest([f], [{}], 'function and object in an array', false, false, true);
  779. t.end();
  780. });
  781. test('Errors', function (t) {
  782. t.deepEqualTest(new Error('xyz'), new Error('xyz'), 'two errors of the same type with the same message', true, true, false);
  783. t.deepEqualTest(new Error('xyz'), new TypeError('xyz'), 'two errors of different types with the same message', true, true);
  784. t.deepEqualTest(new Error('xyz'), new Error('zyx'), 'two errors of the same type with a different message', true, true);
  785. t.test('errorlike', { skip: !Object.defineProperty }, function (st) {
  786. var err = new Error('foo');
  787. // TODO: add `__proto__` when brand check is available
  788. var errorlike = tag({ message: err.message, stack: err.stack, name: err.name, constructor: err.constructor }, 'Error');
  789. Object.defineProperty(errorlike, 'message', { enumerable: false });
  790. Object.defineProperty(errorlike, 'stack', { enumerable: false });
  791. Object.defineProperty(errorlike, 'name', { enumerable: false });
  792. Object.defineProperty(errorlike, 'constructor', { enumerable: false });
  793. st.notOk(errorlike instanceof Error);
  794. st.ok(err instanceof Error);
  795. st.deepEqualTest(
  796. err,
  797. errorlike,
  798. 'error, and errorlike object',
  799. true,
  800. true
  801. );
  802. st.end();
  803. });
  804. t.deepEqualTest(
  805. new Error('a'),
  806. assign(new Error('a'), { code: 10 }),
  807. 'two otherwise equal errors with different own properties',
  808. false,
  809. false
  810. );
  811. t.test('fake error', { skip: !process.env.ASSERT || !hasProto }, function (st) {
  812. var a = tag({
  813. __proto__: null
  814. }, 'Error');
  815. var b = new RangeError('abc');
  816. b.__proto__ = null; // eslint-disable-line no-proto
  817. st.deepEqualTest(
  818. a,
  819. b,
  820. 'null object faking as an Error, RangeError with null proto',
  821. false,
  822. false
  823. );
  824. st.end();
  825. });
  826. t.end();
  827. });
  828. test('object and null', function (t) {
  829. t.deepEqualTest(
  830. {},
  831. null,
  832. 'null and an object',
  833. false,
  834. false
  835. );
  836. t.end();
  837. });
  838. test('errors', function (t) {
  839. t.end();
  840. });
  841. test('error = Object', function (t) {
  842. t.deepEqualTest(
  843. new Error('a'),
  844. { message: 'a' },
  845. false,
  846. false
  847. );
  848. t.end();
  849. });
  850. test('[[Prototypes]]', function (t) {
  851. function C() {}
  852. var instance = new C();
  853. delete instance.constructor;
  854. t.deepEqualTest({}, instance, 'two identical objects with different [[Prototypes]]', true, true);
  855. t.test('Dates with different prototypes', { skip: !hasProto }, function (st) {
  856. var d1 = new Date(0);
  857. var d2 = new Date(0);
  858. st.deepEqualTest(d1, d2, 'two dates with the same timestamp', true, true);
  859. var newProto = {
  860. __proto__: Date.prototype
  861. };
  862. d2.__proto__ = newProto; // eslint-disable-line no-proto
  863. st.ok(d2 instanceof Date, 'd2 is still a Date instance after tweaking [[Prototype]]');
  864. st.deepEqualTest(d1, d2, 'two dates with the same timestamp and different [[Prototype]]', true, true);
  865. st.end();
  866. });
  867. t.end();
  868. });
  869. test('toStringTag', { skip: !hasSymbols || !Symbol.toStringTag }, function (t) {
  870. var o1 = {};
  871. t.equal(Object.prototype.toString.call(o1), '[object Object]', 'o1: Symbol.toStringTag works');
  872. var o2 = {};
  873. t.equal(Object.prototype.toString.call(o2), '[object Object]', 'o2: original Symbol.toStringTag works');
  874. t.deepEqualTest(o1, o2, 'two normal empty objects', true, true);
  875. o2[Symbol.toStringTag] = 'jifasnif';
  876. t.equal(Object.prototype.toString.call(o2), '[object jifasnif]', 'o2: modified Symbol.toStringTag works');
  877. t.deepEqualTest(o1, o2, 'two normal empty objects with different toStringTags', true, true);
  878. t.end();
  879. });
  880. test('boxed primitives', function (t) {
  881. t.deepEqualTest(Object(false), false, 'boxed and primitive `false`', true, false);
  882. t.deepEqualTest(Object(true), true, 'boxed and primitive `true`', false, false);
  883. t.deepEqualTest(Object(3), 3, 'boxed and primitive `3`', false, false);
  884. t.deepEqualTest(Object(NaN), NaN, 'boxed and primitive `NaN`', false, false);
  885. t.deepEqualTest(Object(''), '', 'boxed and primitive `""`', true, false);
  886. t.deepEqualTest(Object('str'), 'str', 'boxed and primitive `"str"`', false, false);
  887. t.test('symbol', { skip: !hasSymbols }, function (st) {
  888. var s = Symbol('');
  889. st.deepEqualTest(Object(s), s, 'boxed and primitive `Symbol()`', false, false);
  890. st.end();
  891. });
  892. t.test('bigint', { skip: typeof BigInt !== 'function' }, function (st) {
  893. var hhgtg = BigInt(42);
  894. st.deepEqualTest(Object(hhgtg), hhgtg, 'boxed and primitive `BigInt(42)`', false, false);
  895. st.end();
  896. });
  897. t.test('`valueOf` is called for boxed primitives', function (st) {
  898. var a = Object(5);
  899. a.valueOf = function () { throw new Error('failed'); };
  900. var b = Object(5);
  901. b.valueOf = function () { throw new Error('failed'); };
  902. st.deepEqualTest(a, b, 'two boxed numbers with a thrower valueOf', false, false);
  903. st.end();
  904. });
  905. t.end();
  906. });
  907. test('getters', { skip: !Object.defineProperty }, function (t) {
  908. var a = {};
  909. Object.defineProperty(a, 'a', { enumerable: true, get: function () { return 5; } });
  910. var b = {};
  911. Object.defineProperty(b, 'a', { enumerable: true, get: function () { return 6; } });
  912. t.deepEqualTest(a, b, 'two objects with the same getter but producing different values', false, false);
  913. t.end();
  914. });
  915. var isBrokenNode = isNode && process.env.ASSERT && semver.satisfies(process.version, '<= 13.3.0');
  916. test('fake arrays: extra keys will be tested', { skip: !hasProto || isBrokenNode }, function (t) {
  917. var a = tag({
  918. __proto__: Array.prototype,
  919. 0: 1,
  920. 1: 1,
  921. 2: 'broken',
  922. length: 2
  923. }, 'Array');
  924. if (Object.defineProperty) {
  925. Object.defineProperty(a, 'length', {
  926. enumerable: false
  927. });
  928. }
  929. t.deepEqualTest(a, [1, 1], 'fake and real array with same contents and [[Prototype]]', false, false);
  930. var b = tag(/abc/, 'Array');
  931. b.__proto__ = Array.prototype; // eslint-disable-line no-proto
  932. b.length = 3;
  933. if (Object.defineProperty) {
  934. Object.defineProperty(b, 'length', {
  935. enumerable: false
  936. });
  937. }
  938. t.deepEqualTest(b, ['a', 'b', 'c'], 'regex faking as array, and array', false, false);
  939. t.end();
  940. });
  941. test('circular references', { skip: 'not supported until v2' }, function (t) {
  942. var b = {};
  943. b.b = b;
  944. var c = {};
  945. c.b = c;
  946. t.deepEqualTest(
  947. b,
  948. c,
  949. 'two self-referencing objects',
  950. true,
  951. true
  952. );
  953. var d = {};
  954. d.a = 1;
  955. d.b = d;
  956. var e = {};
  957. e.a = 1;
  958. e.b = e.a;
  959. t.deepEqualTest(
  960. d,
  961. e,
  962. 'two deeply self-referencing objects',
  963. false,
  964. false
  965. );
  966. t.end();
  967. });
  968. // io.js v2 is the only version where `console.log(b)` below is catchable
  969. var isNodeWhereBufferBreaks = isNode && semver.satisfies(process.version, '< 3');
  970. var isNode06 = isNode && semver.satisfies(process.version, '<= 0.6'); // segfaults in node 0.6, it seems
  971. test('TypedArrays', { skip: !hasTypedArrays }, function (t) {
  972. t.test('Buffer faked as Uint8Array', { skip: typeof Buffer !== 'function' || !Object.create || !hasProto || isNode06 }, function (st) {
  973. var a = safeBuffer('test');
  974. var b = tag(Object.create(
  975. a.__proto__, // eslint-disable-line no-proto
  976. assign(gOPDs(a), {
  977. length: {
  978. enumerable: false,
  979. value: 4
  980. }
  981. })
  982. ), 'Uint8Array');
  983. st.deepEqualTest(
  984. a,
  985. b,
  986. 'Buffer and Uint8Array',
  987. true || isNodeWhereBufferBreaks,
  988. true || isNodeWhereBufferBreaks
  989. );
  990. st.end();
  991. });
  992. forEach(availableTypedArrays, function (name) {
  993. t.test(name + 's', function (st) {
  994. var TA = global[name];
  995. var isBigInt = name.slice(0, 3) === 'Big';
  996. var Z = isBigInt ? BigInt : Number;
  997. st.deepEqualTest(
  998. new TA([Z(1), Z(2), Z(3)]),
  999. new TA([Z(1), Z(2), Z(3)]),
  1000. 'two ' + name + 's with the same contents',
  1001. true,
  1002. true
  1003. );
  1004. st.deepEqualTest(
  1005. new TA([Z(1), Z(2), Z(3)]),
  1006. new TA([Z(1), Z(2), Z(4)]),
  1007. 'two ' + name + 's with different contents',
  1008. false,
  1009. false
  1010. );
  1011. st.end();
  1012. });
  1013. });
  1014. t.test('one TypedArray faking as another', { skip: !hasProto }, function (st) {
  1015. var a = new Uint8Array(10);
  1016. var b = tag(new Int8Array(10), 'Uint8Array');
  1017. b.__proto__ = Uint8Array.prototype; // eslint-disable-line no-proto
  1018. defineDataProperty(b, 'length', 10);
  1019. st.deepEqualTest(
  1020. a,
  1021. b,
  1022. 'Uint8Array, and Int8Array pretending to be a Uint8Array',
  1023. false,
  1024. false
  1025. );
  1026. st.end();
  1027. });
  1028. t.test('ArrayBuffers', { skip: typeof ArrayBuffer !== 'function' }, function (st) {
  1029. var buffer1 = new ArrayBuffer(8); // initial value of 0's
  1030. var buffer2 = new ArrayBuffer(8); // initial value of 0's
  1031. var view1 = new Int8Array(buffer1);
  1032. var view2 = new Int8Array(buffer2);
  1033. st.deepEqualTest(
  1034. view1,
  1035. view2,
  1036. 'Int8Arrays of similar ArrayBuffers',
  1037. true,
  1038. true
  1039. );
  1040. st.deepEqualTest(
  1041. buffer1,
  1042. buffer2,
  1043. 'similar ArrayBuffers',
  1044. true,
  1045. true
  1046. );
  1047. for (var i = 0; i < view1.byteLength; i += 1) {
  1048. view1[i] = 9; // change all values to 9's
  1049. }
  1050. st.deepEqualTest(
  1051. view1,
  1052. view2,
  1053. 'Int8Arrays of different ArrayBuffers',
  1054. false,
  1055. false
  1056. );
  1057. var isHigherThanNode010 = isNode && semver.satisfies(process.version, '> 0.10');
  1058. st.deepEqualTest(
  1059. buffer1,
  1060. buffer2,
  1061. 'different ArrayBuffers',
  1062. isHigherThanNode010,
  1063. isHigherThanNode010
  1064. );
  1065. // node < 0.11 has a nonconfigurable own byteLength property
  1066. t.test('lies about byteLength', { skip: !('byteLength' in ArrayBuffer.prototype) }, function (s2t) {
  1067. var empty4 = new ArrayBuffer(4);
  1068. var empty6 = new ArrayBuffer(6);
  1069. Object.defineProperty(empty6, 'byteLength', { value: 4 });
  1070. s2t.deepEqualTest(
  1071. empty4,
  1072. empty6,
  1073. 'different-length ArrayBuffers, one lying',
  1074. true,
  1075. true
  1076. );
  1077. s2t.end();
  1078. });
  1079. st.end();
  1080. });
  1081. t.test('SharedArrayBuffers', { skip: typeof SharedArrayBuffer !== 'function' }, function (st) {
  1082. var buffer1 = new SharedArrayBuffer(8); // initial value of 0's
  1083. var buffer2 = new SharedArrayBuffer(8); // initial value of 0's
  1084. var view1 = new Int8Array(buffer1);
  1085. var view2 = new Int8Array(buffer2);
  1086. st.deepEqualTest(
  1087. view1,
  1088. view2,
  1089. 'Int8Arrays of similar SharedArrayBuffers',
  1090. true,
  1091. true
  1092. );
  1093. st.deepEqualTest(
  1094. buffer1,
  1095. buffer2,
  1096. 'similar SharedArrayBuffers',
  1097. true,
  1098. true
  1099. );
  1100. for (var i = 0; i < view1.byteLength; i += 1) {
  1101. view1[i] = 9; // change all values to 9's
  1102. }
  1103. st.deepEqualTest(
  1104. view1,
  1105. view2,
  1106. 'Int8Arrays of different SharedArrayBuffers',
  1107. false,
  1108. false
  1109. );
  1110. st.deepEqualTest(
  1111. buffer1,
  1112. buffer2,
  1113. 'different SharedArrayBuffers',
  1114. true,
  1115. true
  1116. );
  1117. t.test('lies about byteLength', { skip: !('byteLength' in SharedArrayBuffer.prototype) }, function (s2t) {
  1118. var empty4 = new SharedArrayBuffer(4);
  1119. var empty6 = new SharedArrayBuffer(6);
  1120. Object.defineProperty(empty6, 'byteLength', { value: 4 });
  1121. s2t.deepEqualTest(
  1122. empty4,
  1123. empty6,
  1124. 'different-length SharedArrayBuffers, one lying',
  1125. true,
  1126. true
  1127. );
  1128. s2t.end();
  1129. });
  1130. st.end();
  1131. });
  1132. t.end();
  1133. });