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opencode/packages/codemode/test/array-callbacks-test262.test.ts
Aiden Cline 068ab339b6 feat(codemode): add named Tool | Namespace entries 
Replace record-keyed tools and the separate namespace-description map with an OpenAI-style array of named tools and namespaces. Namespace descriptions are optional, namespaces may nest, and duplicate or dotted names are rejected.
2026-08-31 13:55:14 -05:00

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/*
* Portions adapted from Test262 at revision 250f204f23a9249ff204be2baec29600faae7b75:
* - test/built-ins/Array/prototype/map/15.4.4.19-8-1.js
* - test/built-ins/Array/prototype/map/15.4.4.19-8-2.js
* - test/built-ins/Array/prototype/map/15.4.4.19-8-b-1.js
* - test/built-ins/Array/prototype/filter/15.4.4.20-9-1.js
* - test/built-ins/Array/prototype/filter/15.4.4.20-9-2.js
* - test/built-ins/Array/prototype/filter/15.4.4.20-9-b-1.js
* - test/built-ins/Array/prototype/find/predicate-call-parameters.js
* - test/built-ins/Array/prototype/find/predicate-not-called-on-empty-array.js
* - test/built-ins/Array/prototype/find/return-found-value-predicate-result-is-true.js
* - test/built-ins/Array/prototype/find/return-undefined-if-predicate-returns-false-value.js
* - test/built-ins/Array/prototype/findIndex/predicate-call-parameters.js
* - test/built-ins/Array/prototype/findIndex/return-index-predicate-result-is-true.js
* - test/built-ins/Array/prototype/findIndex/return-negative-one-if-predicate-returns-false-value.js
* - test/built-ins/Array/prototype/findLast/predicate-call-parameters.js
* - test/built-ins/Array/prototype/findLast/return-found-value-predicate-result-is-true.js
* - test/built-ins/Array/prototype/findLast/return-undefined-if-predicate-returns-false-value.js
* - test/built-ins/Array/prototype/findLastIndex/predicate-call-parameters.js
* - test/built-ins/Array/prototype/findLastIndex/return-index-predicate-result-is-true.js
* - test/built-ins/Array/prototype/findLastIndex/return-negative-one-if-predicate-returns-false-value.js
* - test/built-ins/Array/prototype/some/15.4.4.17-7-1.js
* - test/built-ins/Array/prototype/some/15.4.4.17-8-1.js
* - test/built-ins/Array/prototype/every/15.4.4.16-7-1.js
* - test/built-ins/Array/prototype/every/15.4.4.16-8-1.js
* - test/built-ins/Array/prototype/forEach/15.4.4.18-7-1.js
* - test/built-ins/Array/prototype/forEach/15.4.4.18-7-2.js
* - test/built-ins/Array/prototype/reduce/15.4.4.21-9-5.js
* - test/built-ins/Array/prototype/reduce/15.4.4.21-9-c-ii-20.js
* - test/built-ins/Array/prototype/reduce/15.4.4.21-9-1.js
* - test/built-ins/Array/prototype/reduce/15.4.4.21-10-1.js
* - test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-5.js
* - test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-c-ii-20.js
* - test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-1.js
* - test/built-ins/Array/prototype/reduceRight/15.4.4.22-10-1.js
* - test/built-ins/Array/prototype/flatMap/depth-always-one.js
* - test/built-ins/Array/prototype/flatMap/mapperfunction-throws.js
* - test/built-ins/Array/prototype/sort/S15.4.4.11_A1.1_T1.js
* - test/built-ins/Array/prototype/sort/S15.4.4.11_A2.1_T1.js
* - test/built-ins/Array/prototype/sort/stability-5-elements.js
* - test/built-ins/Array/prototype/toSorted/comparefn-controls-sort.js
* - test/built-ins/Array/prototype/toSorted/comparefn-default.js
* - test/built-ins/Array/prototype/toSorted/immutable.js
* - test/built-ins/Array/prototype/toSorted/zero-or-one-element.js
*
* Copyright (C) 2015 the V8 project authors. All rights reserved.
* Copyright (C) 2018 Mathias Bynens. All rights reserved.
* Copyright (C) 2018 Shilpi Jain and Michael Ficarra. All rights reserved.
* Copyright (C) 2021 Igalia, S.L. All rights reserved.
* Copyright (C) 2021 Microsoft. All rights reserved.
* Copyright (C) 2025 Google. All rights reserved.
* Copyright (C) 2026 Garham Lee. All rights reserved.
* Copyright (c) 2012 Ecma International. All rights reserved.
* Copyright 2009 the Sputnik authors. All rights reserved.
* Test262 portions are governed by the BSD license in LICENSE.test262.
*/
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 }))
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/map/15.4.4.19-8-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = 5; const result = input.map((value) => { input[2] = 3; input[5] = 6; return 1 }); return [result.length, result[5] === undefined]`,
expected: [5, true],
},
{
path: "test/built-ins/Array/prototype/map/15.4.4.19-8-2.js",
code: `const input = [1, 2, 3, 4, 5]; const result = input.map((value) => { input[4] = -1; return value > 0 ? 1 : 0 }); return [result.length, result[4]]`,
expected: [5, 0],
},
{
path: "test/built-ins/Array/prototype/map/15.4.4.19-8-b-1.js",
code: `const input = []; input[10] = 0; input.pop(); input[1] = undefined; let calls = 0; const result = input.map(() => { calls += 1; return 1 }); return [result.length, calls, 0 in result, 1 in result]`,
expected: [10, 1, false, true],
},
{
path: "test/built-ins/Array/prototype/filter/15.4.4.20-9-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = 5; const result = input.filter(() => { input[2] = 3; input[5] = 6; return true }); return result`,
expected: [1, 2, 3, 4, 5],
},
{
path: "test/built-ins/Array/prototype/filter/15.4.4.20-9-2.js",
code: `const input = [1, 2, 3, 4, 5]; return input.filter((value) => { input[2] = -1; input[4] = -1; return value > 0 })`,
expected: [1, 2, 4],
},
{
path: "test/built-ins/Array/prototype/filter/15.4.4.20-9-b-1.js",
code: `const input = []; input[9] = 0; input.pop(); input[1] = undefined; let calls = 0; const result = input.filter(() => { calls += 1; return false }); return [result, calls]`,
expected: [[], 1],
},
{
path: "test/built-ins/Array/prototype/find/predicate-call-parameters.js",
code: `const input = [10, 20]; const seen = []; input.find((value, index, receiver) => { seen.push([value, index, receiver === input]); return false }); return seen`,
expected: [
[10, 0, true],
[20, 1, true],
],
},
{
path: "test/built-ins/Array/prototype/find/return-found-value-predicate-result-is-true.js",
code: `return [1, 2, 3].find((value) => value > 1)`,
expected: 2,
},
{
path: "test/built-ins/Array/prototype/find/return-undefined-if-predicate-returns-false-value.js",
code: `return [1, 2, 3].find((value) => value > 4) === undefined`,
expected: true,
},
{
path: "test/built-ins/Array/prototype/find/predicate-not-called-on-empty-array.js",
code: `let calls = 0; const result = [].find(() => { calls += 1; return true }); return [result === undefined, calls]`,
expected: [true, 0],
},
{
path: "test/built-ins/Array/prototype/findIndex/predicate-call-parameters.js",
code: `const input = [10, 20]; const seen = []; input.findIndex((value, index, receiver) => { seen.push([value, index, receiver === input]); return false }); return seen`,
expected: [
[10, 0, true],
[20, 1, true],
],
},
{
path: "test/built-ins/Array/prototype/findIndex/return-index-predicate-result-is-true.js",
code: `return [1, 2, 3].findIndex((value) => value > 1)`,
expected: 1,
},
{
path: "test/built-ins/Array/prototype/findIndex/return-negative-one-if-predicate-returns-false-value.js",
code: `return [1, 2, 3].findIndex((value) => value > 4)`,
expected: -1,
},
{
path: "test/built-ins/Array/prototype/findLast/predicate-call-parameters.js",
code: `const input = [10, 20]; const seen = []; input.findLast((value, index, receiver) => { seen.push([value, index, receiver === input]); return false }); return seen`,
expected: [
[20, 1, true],
[10, 0, true],
],
},
{
path: "test/built-ins/Array/prototype/findLast/return-found-value-predicate-result-is-true.js",
code: `return [1, 2, 3].findLast((value) => value < 3)`,
expected: 2,
},
{
path: "test/built-ins/Array/prototype/findLast/return-undefined-if-predicate-returns-false-value.js",
code: `return [1, 2, 3].findLast((value) => value > 4) === undefined`,
expected: true,
},
{
path: "test/built-ins/Array/prototype/findLastIndex/predicate-call-parameters.js",
code: `const input = [10, 20]; const seen = []; input.findLastIndex((value, index, receiver) => { seen.push([value, index, receiver === input]); return false }); return seen`,
expected: [
[20, 1, true],
[10, 0, true],
],
},
{
path: "test/built-ins/Array/prototype/findLastIndex/return-index-predicate-result-is-true.js",
code: `return [1, 2, 3].findLastIndex((value) => value < 3)`,
expected: 1,
},
{
path: "test/built-ins/Array/prototype/findLastIndex/return-negative-one-if-predicate-returns-false-value.js",
code: `return [1, 2, 3].findLastIndex((value) => value > 4)`,
expected: -1,
},
{
path: "test/built-ins/Array/prototype/some/15.4.4.17-7-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = 5; const seen = []; const result = input.some((value) => { input[2] = 3; seen.push(value); return false }); return [result, seen.includes(3)]`,
expected: [false, true],
},
{
path: "test/built-ins/Array/prototype/some/15.4.4.17-8-1.js",
code: `return [].some(() => true)`,
expected: false,
},
{
path: "test/built-ins/Array/prototype/every/15.4.4.16-7-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = 5; const seen = []; const result = input.every((value) => { input[2] = 3; seen.push(value); return true }); return [result, seen.includes(3)]`,
expected: [true, true],
},
{
path: "test/built-ins/Array/prototype/every/15.4.4.16-8-1.js",
code: `return [].every(() => false)`,
expected: true,
},
{
path: "test/built-ins/Array/prototype/forEach/15.4.4.18-7-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = 5; let calls = 0; input.forEach(() => { calls += 1; input[2] = 3; input[5] = 6 }); return calls`,
expected: 5,
},
{
path: "test/built-ins/Array/prototype/forEach/15.4.4.18-7-2.js",
code: `const input = [1, 2, 3]; const seen = []; input.forEach((value, index) => { seen.push(value); if (index === 0) input.pop() }); return seen`,
expected: [1, 2],
},
{
path: "test/built-ins/Array/prototype/reduce/15.4.4.21-9-1.js",
code: `const input = [1, 2]; input[3] = 4; input[4] = "5"; return input.reduce((accumulator, value) => { input[2] = 3; input[5] = 6; return accumulator + value })`,
expected: "105",
},
{
path: "test/built-ins/Array/prototype/reduce/15.4.4.21-9-5.js",
code: `let calls = 0; const result = [1].reduce(() => { calls += 1; return 2 }); return [result, calls]`,
expected: [1, 0],
},
{
path: "test/built-ins/Array/prototype/reduce/15.4.4.21-9-c-ii-20.js",
code: `let accessed = false; const result = [11].reduce((previous) => { accessed = true; return previous === undefined }, undefined); return [result, accessed]`,
expected: [true, true],
},
{
path: "test/built-ins/Array/prototype/reduce/15.4.4.21-10-1.js",
code: `const input = [1, 2, 3, 4, 5]; input.reduce(() => 1); return input`,
expected: [1, 2, 3, 4, 5],
},
{
path: "test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-1.js",
code: `const input = ["1", 2]; input[3] = 4; input[4] = "5"; return input.reduceRight((accumulator, value) => { input[2] = 3; input[5] = 6; return accumulator + value })`,
expected: "54321",
},
{
path: "test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-5.js",
code: `let calls = 0; const result = [1].reduceRight(() => { calls += 1; return 2 }); return [result, calls]`,
expected: [1, 0],
},
{
path: "test/built-ins/Array/prototype/reduceRight/15.4.4.22-9-c-ii-20.js",
code: `let accessed = false; const result = [11].reduceRight((previous) => { accessed = true; return previous === undefined }, undefined); return [result, accessed]`,
expected: [true, true],
},
{
path: "test/built-ins/Array/prototype/reduceRight/15.4.4.22-10-1.js",
code: `const input = [1, 2, 3, 4, 5]; input.reduceRight(() => 1); return input`,
expected: [1, 2, 3, 4, 5],
},
{
path: "test/built-ins/Array/prototype/flatMap/depth-always-one.js",
code: `return [1, 2, 3].flatMap((value) => [[value * 2]])`,
expected: [[2], [4], [6]],
},
{
path: "test/built-ins/Array/prototype/flatMap/mapperfunction-throws.js",
code: `try { [1, 2].flatMap(() => { throw "stop" }) } catch (error) { return error === "stop" } return false`,
expected: true,
},
{
path: "test/built-ins/Array/prototype/sort/S15.4.4.11_A1.1_T1.js",
code: `const input = []; input[2] = 0; input.pop(); input.sort(); return [input.length, input[0] === undefined, input[1] === undefined]`,
expected: [2, true, true],
},
{
path: "test/built-ins/Array/prototype/sort/S15.4.4.11_A2.1_T1.js",
code: `return ["z", "y", "x", "w", "v", "u", "t", "s", "r", "q", "p", "o", "n", "M", "L", "K", "J", "I", "H", "G", "F", "E", "D", "C", "B", "A"].sort()`,
expected: [
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"n",
"o",
"p",
"q",
"r",
"s",
"t",
"u",
"v",
"w",
"x",
"y",
"z",
],
},
{
path: "test/built-ins/Array/prototype/sort/stability-5-elements.js",
code: `const input = [{ n: "A", r: 2 }, { n: "B", r: 3 }, { n: "C", r: 2 }, { n: "D", r: 3 }, { n: "E", r: 3 }]; return input.sort((left, right) => right.r - left.r).map((item) => item.n).join("")`,
expected: "BDEAC",
},
{
path: "test/built-ins/Array/prototype/toSorted/comparefn-controls-sort.js",
code: `const mixed = [333, 33, 3, 222, 22, 2, 111, 11, 1]; return [[1, 2, 3, 4].toSorted((a, b) => a - b), [4, 3, 2, 1].toSorted((a, b) => a - b), mixed.toSorted((a, b) => a - b), [1, 2, 3, 4].toSorted((a, b) => b - a), [4, 3, 2, 1].toSorted((a, b) => b - a), mixed.toSorted((a, b) => b - a)]`,
expected: [
[1, 2, 3, 4],
[1, 2, 3, 4],
[1, 2, 3, 11, 22, 33, 111, 222, 333],
[4, 3, 2, 1],
[4, 3, 2, 1],
[333, 222, 111, 33, 22, 11, 3, 2, 1],
],
},
{
path: "test/built-ins/Array/prototype/toSorted/comparefn-default.js",
code: `return [[1, 2, 3, 4].toSorted(), [4, 3, 2, 1].toSorted(), ["a", 2, 1, "z"].toSorted(), [333, 33, 3, 222, 22, 2, 111, 11, 1].toSorted()]`,
expected: [
[1, 2, 3, 4],
[1, 2, 3, 4],
[1, 2, "a", "z"],
[1, 11, 111, 2, 22, 222, 3, 33, 333],
],
},
{
path: "test/built-ins/Array/prototype/toSorted/immutable.js",
code: `const input = [2, 0, 1]; const result = input.toSorted(); return [input, result !== input]`,
expected: [[2, 0, 1], true],
},
{
path: "test/built-ins/Array/prototype/toSorted/zero-or-one-element.js",
code: `const zero = []; const one = [1]; const zeroResult = zero.toSorted(); const oneResult = one.toSorted(); return [zeroResult, oneResult, zeroResult !== zero, oneResult !== one]`,
expected: [[], [1], true, true],
},
] as const
describe("Test262 Array callback adaptations", () => {
for (const item of cases) {
test(item.path, async () => {
expect(await value(item.code)).toEqual(item.expected)
})
}
})
describe("Array callback regressions", () => {
test("reduce and reduceRight find the first present element", async () => {
expect(
await value(`
const left = []
left[2] = 3
const right = []
right[0] = 4
right[3] = 1
right.pop()
return [left.reduce((a, b) => a + b), right.reduceRight((a, b) => a + b)]
`),
).toEqual([3, 4])
})
test("reduce and reduceRight reject arrays containing only holes", async () => {
expect(
await value(`
const values = []
values[2] = 1
values.pop()
let left
let right
try { values.reduce((a, b) => a + b) } catch (error) { left = error.name }
try { values.reduceRight((a, b) => a + b) } catch (error) { right = error.name }
return [left, right]
`),
).toEqual(["TypeError", "TypeError"])
})
test("findLast returns the value observed before predicate mutation", async () => {
expect(
await value(`
const values = [1]
return values.findLast((item, index, array) => {
array[index] = 2
return true
})
`),
).toBe(1)
})
})
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