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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356/* * Portions adapted from Test262 at revision 250f204f23a9249ff204be2baec29600faae7b75: * - test/built-ins/Array/prototype/includes/samevaluezero.js * - test/built-ins/Array/prototype/includes/using-fromindex.js * - test/built-ins/Array/prototype/join/S15.4.4.5_A3.1_T1.js * - test/built-ins/Array/prototype/join/S15.4.4.5_A3.2_T1.js * - test/built-ins/Array/prototype/slice/S15.4.4.10_A1.2_T2.js * - test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T1.js * - test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T2.js * - test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T3.js * - test/built-ins/Array/prototype/indexOf/fromindex-zero-conversion.js * - test/built-ins/Array/prototype/indexOf/length-zero-returns-minus-one.js * - test/built-ins/Array/prototype/lastIndexOf/fromindex-zero-conversion.js * - test/built-ins/Array/prototype/lastIndexOf/length-zero-returns-minus-one.js * - test/built-ins/Array/prototype/at/returns-item.js * - test/built-ins/Array/prototype/at/returns-item-relative-index.js * - test/built-ins/Array/prototype/at/returns-undefined-for-out-of-range-index.js * - test/built-ins/Array/prototype/flat/null-undefined-elements.js * - test/built-ins/Array/prototype/flat/positive-infinity.js * - test/built-ins/Array/prototype/reverse/S15.4.4.8_A1_T1.js * - test/built-ins/Array/prototype/toReversed/immutable.js * - test/built-ins/Array/prototype/toReversed/zero-or-one-element.js * - test/built-ins/Array/prototype/with/immutable.js * - test/built-ins/Array/prototype/with/index-negative.js * - test/built-ins/Array/prototype/push/S15.4.4.7_A1_T1.js * - test/built-ins/Array/prototype/pop/S15.4.4.6_A1.1_T1.js * - test/built-ins/Array/prototype/shift/S15.4.4.9_A1.1_T1.js * - test/built-ins/Array/prototype/unshift/S15.4.4.13_A1_T1.js * - test/built-ins/Array/prototype/splice/S15.4.4.12_A1.1_T1.js * - test/built-ins/Array/prototype/splice/S15.4.4.12_A1.2_T1.js * - test/built-ins/Array/prototype/splice/called_with_one_argument.js * - test/built-ins/Array/prototype/toSpliced/holes-not-preserved.js * - test/built-ins/Array/prototype/toSpliced/immutable.js * - test/built-ins/Array/prototype/toSpliced/start-and-deleteCount-undefineds.js * - test/built-ins/Array/prototype/toSpliced/start-and-deleteCount-missing.js * - test/built-ins/Array/prototype/toSpliced/start-undefined-and-deleteCount-missing.js * - test/built-ins/Array/prototype/fill/fill-values.js * - test/built-ins/Array/prototype/fill/fill-values-custom-start-and-end.js * - test/built-ins/Array/prototype/fill/return-this.js * - test/built-ins/Array/prototype/copyWithin/non-negative-target-start-and-end.js * - test/built-ins/Array/prototype/copyWithin/return-this.js * - test/built-ins/Array/prototype/keys/iteration.js * - test/built-ins/Array/prototype/values/iteration.js * - test/built-ins/Array/prototype/entries/iteration.js * - test/built-ins/Array/isArray/15.4.3.2-0-3.js * - test/built-ins/Array/isArray/15.4.3.2-0-4.js * - test/built-ins/Array/from/from-array.js * - test/built-ins/Array/from/from-string.js * - test/built-ins/Array/from/array-like-has-length-but-no-indexes-with-values.js * - test/built-ins/Array/of/creates-a-new-array-from-arguments.js * * Copyright (C) 2015 André Bargull. All rights reserved. * Copyright (C) 2015 the V8 project authors. All rights reserved. * Copyright (C) 2016 the V8 project authors. All rights reserved. * Copyright (C) 2018 Shilpi Jain and Michael Ficarra. All rights reserved. * Copyright (C) 2020 Alexey Shvayka. All rights reserved. * Copyright (C) 2020 Rick Waldron. All rights reserved. * Copyright (C) 2021 Igalia, S.L. All rights reserved. * Copyright (c) 2012 Ecma International. All rights reserved. * Copyright (c) 2014 Hank Yates. All rights reserved. * Copyright (c) 2015 the V8 project authors. All rights reserved. * Copyright (c) 2021 Rick Waldron. All rights reserved. * Copyright 2009 the Sputnik authors. All rights reserved. * Copyright 2015 Microsoft Corporation. All rights reserved. * Copyright 2016 The V8 project authors. All rights reserved. * Test262 portions are governed by the BSD license in LICENSE.test262. * The toSpliced hole case omits the source test's inherited Array.prototype element because CodeMode does not expose * prototype mutation; it retains the source test's hole-densification assertions. */import { describe, expect, test } from "bun:test"import { Effect } from "effect"import { CodeMode } from "../src/index.js"
const value = async (code: string) => { const result = await Effect.runPromise(CodeMode.execute({ code, tools: {} })) if (!result.ok) throw new Error(`expected success, got ${result.error.kind}: ${result.error.message}`) return result.value}
const cases = [ { path: "test/built-ins/Array/prototype/includes/samevaluezero.js", code: `const input = [42, 0, 1, NaN]; return [input.includes(42), input.includes("42"), input.includes([42]), input.includes(true), input.includes(NaN), input.includes(0), input.includes(-0), input.includes(null), input.includes("")]`, expected: [true, false, false, false, true, true, true, false, false], }, { path: "test/built-ins/Array/prototype/includes/using-fromindex.js", code: `const input = ["a", "b", "c"]; return [input.includes("a", 0), input.includes("a", 1), input.includes("a", -4), input.includes("a", -3), input.includes("a", -2), input.includes("b", 0), input.includes("b", 1), input.includes("b", 2), input.includes("b", -3), input.includes("b", -2), input.includes("b", -1), input.includes("c", 0), input.includes("c", 2), input.includes("c", 3), input.includes("c", -3), input.includes("c", -1)]`, expected: [true, false, true, true, false, true, true, false, true, true, false, true, true, false, true, true], }, { path: "test/built-ins/Array/prototype/join/S15.4.4.5_A3.1_T1.js", code: `return [[0, 1, 2, 3].join("&"), [0, 1, 2, 3].join("")]`, expected: ["0&1&2&3", "0123"], }, { path: "test/built-ins/Array/prototype/join/S15.4.4.5_A3.2_T1.js", code: `return [ ["", "", ""].join(""), ["&", "&", "&"].join("&"), [true, true, true].join(), [null, null, null].join(), [undefined, undefined, undefined].join(), [Infinity, Infinity, Infinity].join(), [NaN, NaN, NaN].join(), ]`, expected: ["", "&&&&&", "true,true,true", ",,", ",,", "Infinity,Infinity,Infinity", "NaN,NaN,NaN"], }, { path: "test/built-ins/Array/prototype/slice/S15.4.4.10_A1.2_T2.js", code: `return [0, 1, 2, 3, 4].slice(-1, 5)`, expected: [4], }, { path: "test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T1.js", code: `return [].concat([0, 1], [2, 3, 4])`, expected: [0, 1, 2, 3, 4], }, { path: "test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T2.js", code: `const object = { value: 1 }; const result = [0].concat(object, [1, 2], -1, true, "NaN"); return [result, result[1] === object]`, expected: [[0, { value: 1 }, 1, 2, -1, true, "NaN"], true], }, { path: "test/built-ins/Array/prototype/concat/S15.4.4.4_A1_T3.js", code: `const input = [0, 1]; const result = input.concat(); return [result, result !== input]`, expected: [[0, 1], true], }, { path: "test/built-ins/Array/prototype/indexOf/fromindex-zero-conversion.js", code: `const result = [true].indexOf(true, -0); return [result, 1 / result === Infinity]`, expected: [0, true], }, { path: "test/built-ins/Array/prototype/indexOf/length-zero-returns-minus-one.js", code: `return [].indexOf(1)`, expected: -1, }, { path: "test/built-ins/Array/prototype/lastIndexOf/fromindex-zero-conversion.js", code: `const result = [true].lastIndexOf(true, -0); return [result, 1 / result === Infinity]`, expected: [0, true], }, { path: "test/built-ins/Array/prototype/lastIndexOf/length-zero-returns-minus-one.js", code: `return [].lastIndexOf(1)`, expected: -1, }, { path: "test/built-ins/Array/prototype/at/returns-item.js", code: `const input = [1, 2, 3, 4, undefined, 5]; return [input.at(0), input.at(1), input.at(2), input.at(3), input.at(4) === undefined, input.at(5)]`, expected: [1, 2, 3, 4, true, 5], }, { path: "test/built-ins/Array/prototype/at/returns-item-relative-index.js", code: `const input = [1, 2, 3, 4, undefined, 5]; return [input.at(0), input.at(-1), input.at(-2) === undefined, input.at(-3), input.at(-4)]`, expected: [1, 5, true, 4, 3], }, { path: "test/built-ins/Array/prototype/at/returns-undefined-for-out-of-range-index.js", code: `const input = []; return [input.at(-2) === undefined, input.at(0) === undefined, input.at(1) === undefined]`, expected: [true, true, true], }, { path: "test/built-ins/Array/prototype/flat/null-undefined-elements.js", code: `const result = [1, [null, [undefined]]].flat(2); return [result.length, result[0], result[1] === null, result[2] === undefined]`, expected: [3, 1, true, true], }, { path: "test/built-ins/Array/prototype/flat/positive-infinity.js", code: `return [1, [2, [3, [4]]]].flat(Infinity)`, expected: [1, 2, 3, 4], }, { path: "test/built-ins/Array/prototype/reverse/S15.4.4.8_A1_T1.js", code: `const empty = []; const one = [1]; const input = [1, 2]; const emptyResult = empty.reverse(); const oneResult = one.reverse(); const result = input.reverse(); return [emptyResult === empty, oneResult === one, result === input, input]`, expected: [true, true, true, [2, 1]], }, { path: "test/built-ins/Array/prototype/toReversed/immutable.js", code: `const input = [0, 1, 2]; const result = input.toReversed(); return [input, result !== input]`, expected: [[0, 1, 2], true], }, { path: "test/built-ins/Array/prototype/toReversed/zero-or-one-element.js", code: `const zero = []; const one = [1]; const zeroResult = zero.toReversed(); const oneResult = one.toReversed(); return [zeroResult, oneResult, zeroResult !== zero, oneResult !== one]`, expected: [[], [1], true, true], }, { path: "test/built-ins/Array/prototype/with/immutable.js", code: `const input = [0, 1, 2]; const result = input.with(1, 3); return [input, result !== input, input.with(1, 1) !== input]`, expected: [[0, 1, 2], true, true], }, { path: "test/built-ins/Array/prototype/with/index-negative.js", code: `const input = [0, 1, 2]; return [input.with(-1, 4), input.with(-3, 4)]`, expected: [ [0, 1, 4], [4, 1, 2], ], }, { path: "test/built-ins/Array/prototype/push/S15.4.4.7_A1_T1.js", code: `const input = []; return [input.push(1), input.push(), input.push(-1), input]`, expected: [1, 1, 2, [1, -1]], }, { path: "test/built-ins/Array/prototype/pop/S15.4.4.6_A1.1_T1.js", code: `const input = []; return [input.pop() === undefined, input.length]`, expected: [true, 0], }, { path: "test/built-ins/Array/prototype/shift/S15.4.4.9_A1.1_T1.js", code: `const input = []; return [input.shift() === undefined, input.length]`, expected: [true, 0], }, { path: "test/built-ins/Array/prototype/unshift/S15.4.4.13_A1_T1.js", code: `const input = []; return [input.unshift(1), input[0], input.unshift(), input.unshift(-1), input]`, expected: [1, 1, 1, 2, [-1, 1]], }, { path: "test/built-ins/Array/prototype/splice/S15.4.4.12_A1.1_T1.js", code: `const input = [0, 1, 2, 3]; const removed = input.splice(0, 3); return [input, removed]`, expected: [[3], [0, 1, 2]], }, { path: "test/built-ins/Array/prototype/splice/S15.4.4.12_A1.2_T1.js", code: `const input = [0, 1]; const removed = input.splice(-2, -1); return [input, removed]`, expected: [[0, 1], []], }, { path: "test/built-ins/Array/prototype/splice/called_with_one_argument.js", code: `const input = ["first", "second", "third"]; const removed = input.splice(1); return [input, removed]`, expected: [["first"], ["second", "third"]], }, { path: "test/built-ins/Array/prototype/toSpliced/immutable.js", code: `const input = [2, 0, 1]; const inserted = input.toSpliced(0, 0, -1); const replaced = input.toSpliced(0, 1, -1); return [input, inserted, replaced, inserted !== input, replaced !== input]`, expected: [[2, 0, 1], [-1, 2, 0, 1], [-1, 0, 1], true, true], }, { path: "test/built-ins/Array/prototype/toSpliced/start-and-deleteCount-missing.js", code: `const input = ["first", "second", "third"]; const result = input.toSpliced(); return [result, result !== input]`, expected: [["first", "second", "third"], true], }, { path: "test/built-ins/Array/prototype/toSpliced/start-undefined-and-deleteCount-missing.js", code: `return ["first", "second", "third"].toSpliced(undefined)`, expected: [], }, { path: "test/built-ins/Array/prototype/toSpliced/start-and-deleteCount-undefineds.js", code: `const input = ["first", "second", "third"]; const result = input.toSpliced(undefined, undefined); return [result, result !== input]`, expected: [["first", "second", "third"], true], }, { path: "test/built-ins/Array/prototype/toSpliced/holes-not-preserved.js", code: `const input = [0, , 2, , 4]; const result = input.toSpliced(0, 0, -1); return [result, 2 in result, 4 in result]`, expected: [[-1, 0, null, 2, null, 4], true, true], }, { path: "test/built-ins/Array/prototype/fill/fill-values-custom-start-and-end.js", code: `const input = [0, 0, 0, 0, 0]; input.fill(8, -3, 4); const sparse = []; sparse[4] = 0; sparse.fill(8, 1, 3); return [[0, 0, 0].fill(8, 1, 2), input, [0, 0, 0, 0, 0].fill(8, -2, -1), [0, 0, 0, 0, 0].fill(8, -1, -3), [0 in sparse, sparse[1], sparse[2], 3 in sparse, sparse[4]]]`, expected: [ [0, 8, 0], [0, 0, 8, 8, 0], [0, 0, 0, 8, 0], [0, 0, 0, 0, 0], [false, 8, 8, false, 0], ], }, { path: "test/built-ins/Array/prototype/fill/return-this.js", code: `const input = []; return input.fill(1) === input`, expected: true, }, { path: "test/built-ins/Array/prototype/fill/fill-values.js", code: `const omitted = [0, 0].fill(); return [[].fill(8), omitted.map((value) => value === undefined), [0, 0, 0].fill(8)]`, expected: [[], [true, true], [8, 8, 8]], }, { path: "test/built-ins/Array/prototype/copyWithin/non-negative-target-start-and-end.js", code: `return [[0, 1, 2, 3].copyWithin(0, 0, 0), [0, 1, 2, 3].copyWithin(0, 0, 2), [0, 1, 2, 3].copyWithin(0, 1, 2), [0, 1, 2, 3].copyWithin(1, 0, 2), [0, 1, 2, 3, 4, 5].copyWithin(1, 3, 5)]`, expected: [ [0, 1, 2, 3], [0, 1, 2, 3], [1, 1, 2, 3], [0, 0, 1, 3], [0, 3, 4, 3, 4, 5], ], }, { path: "test/built-ins/Array/prototype/copyWithin/return-this.js", code: `const input = [0, 1, 2, 3]; const result = input.copyWithin(1, 0, 2); return [input, result === input]`, expected: [[0, 0, 1, 3], true], }, { path: "test/built-ins/Array/prototype/keys/iteration.js", code: `return ["a", "b", "c"].keys()`, expected: [0, 1, 2], }, { path: "test/built-ins/Array/prototype/values/iteration.js", code: `return ["a", "b", "c"].values()`, expected: ["a", "b", "c"], }, { path: "test/built-ins/Array/prototype/entries/iteration.js", code: `return ["a", "b"].entries()`, expected: [ [0, "a"], [1, "b"], ], }, { path: "test/built-ins/Array/isArray/15.4.3.2-0-3.js", code: `return [Array.isArray([]), Array.isArray([1]), Array.isArray(Array.of(1))]`, expected: [true, true, true], }, { path: "test/built-ins/Array/isArray/15.4.3.2-0-4.js", code: `return [Array.isArray(42), Array.isArray({}), Array.isArray(null), Array.isArray("array")]`, expected: [false, false, false, false], }, { path: "test/built-ins/Array/from/from-array.js", code: `const input = [0, "foo", undefined, Infinity]; const result = Array.from(input); return [result.length, result[0], result[1], result[2] === undefined, result[3] === Infinity, result !== input, result instanceof Array]`, expected: [4, 0, "foo", true, true, true, true], }, { path: "test/built-ins/Array/from/from-string.js", code: `return Array.from("Test")`, expected: ["T", "e", "s", "t"], }, { path: "test/built-ins/Array/from/array-like-has-length-but-no-indexes-with-values.js", code: `const result = Array.from({ length: 5 }); const mapped = result.map(() => 1); return [result.length, result.map((value) => value === undefined), mapped.length, mapped]`, expected: [5, [true, true, true, true, true], 5, [1, 1, 1, 1, 1]], }, { path: "test/built-ins/Array/of/creates-a-new-array-from-arguments.js", code: `const mixed = Array.of(undefined, false, null, undefined); return [Array.of("Mike", "Rick", "Leo"), mixed.length, mixed[0] === undefined, mixed[1], mixed[2], mixed[3] === undefined, Array.of()]`, expected: [["Mike", "Rick", "Leo"], 4, true, false, null, true, []], },] as const
describe("Test262 Array core adaptations", () => { for (const item of cases) { test(item.path, async () => { expect(await value(item.code)).toEqual(item.expected) }) }})