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test(codemode): add Test262 array coverage (#35965)

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Aiden Cline 2026-07-08 17:26:11 -05:00 • committed by GitHub
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5 changed files with 736 additions and 106 deletions
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21
packages/codemode/test/stdlib.test.ts
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@ -154,9 +154,7 @@ describe("RegExp", () => {
).toEqual(["1", "22"])
})
test("string match: non-global carries index, global lists all matches", async () => {
expect(await value(`const m = "a1b22".match(/\\d+/); return [m[0], m.index]`)).toEqual(["1", 1])
expect(await value(`return "a1b22".match(/\\d+/g)`)).toEqual(["1", "22"])
test("an unmatched string pattern returns null", async () => {
expect(await value(`return "abc".match(/\\d/)`)).toBeNull()
})
@ -164,13 +162,6 @@ describe("RegExp", () => {
expect(await value(`return "a1b22".matchAll(/(\\d+)/g).map((m) => m[1])`)).toEqual(["1", "22"])
})
test("replace and replaceAll with patterns and $1 substitution", async () => {
expect(await value(`return "a1b2".replace(/\\d/, "#")`)).toBe("a#b2")
expect(await value(`return "a1b2".replace(/\\d/g, "#")`)).toBe("a#b#")
expect(await value(`return "a1b2".replaceAll(/\\d/g, "#")`)).toBe("a#b#")
expect(await value(`return "hi bob".replace(/b(o)b/, "[$1]")`)).toBe("hi [o]")
})
test("function replacers receive captures, offsets, input, and named groups", async () => {
expect(
await value(`
@ -236,12 +227,6 @@ describe("RegExp", () => {
expect(await value(`try { "a".replaceAll(/a/, "b"); return "no" } catch { return "caught" }`)).toBe("caught")
})
test("split and search accept patterns", async () => {
expect(await value(`return "a1b22c".split(/\\d+/)`)).toEqual(["a", "b", "c"])
expect(await value(`return "ab42".search(/\\d/)`)).toBe(2)
expect(await value(`return "ab".search(/\\d/)`)).toBe(-1)
})
test("new RegExp constructs from strings; invalid patterns are catchable", async () => {
expect(await value(`return new RegExp("a+", "i").test("AAA")`)).toBe(true)
expect(await value(`try { new RegExp("("); return "no" } catch { return "caught" }`)).toBe("caught")
@ -650,9 +635,7 @@ describe("stdlib integration", () => {
true,
)
expect(
await value(
`try { Object.fromEntries(new Map([["fn", Math.max]])); return false } catch { return true }`,
),
await value(`try { Object.fromEntries(new Map([["fn", Math.max]])); return false } catch { return true }`),
).toBe(true)
})