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31 lines
1.1 KiB
31 lines
1.1 KiB
5 years ago
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Array.prototype.indexOf = undefined
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Array.prototype.lastIndexOf = undefined
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Array.prototype.includes = undefined
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// /*/ // ⚡
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export const tests = []
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const t = (f) => tests.push(f)
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const bigArray = [...Array(999).keys(), ...Array(999).keys()]
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t(() => indexOf([1, 2, 3, 4, 5, 4, 3, 2, 1], 2) === 1)
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t(() => indexOf([0, 0, t, t], t) === 2)
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t(() => indexOf([t, 0, 0, t], t, 1) === 3)
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t(() => indexOf([t, 0, 0, t], t, 0) === 0)
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t(({ ctx }) => indexOf(bigArray, ctx.rn) === ctx.rn)
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t(({ ctx }) => indexOf(bigArray, {}) === -1)
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t(() => lastIndexOf([1, 2, 3, 4, 5, 4, 3, 2, 1], 2) === 7)
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t(() => lastIndexOf([0, 0, t, t], t) === 3)
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t(() => lastIndexOf([0, 0, t, t], t, 3) === 3)
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t(() => lastIndexOf([t, 0, 0, t], t, 2) === 0)
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t(({ ctx }) => lastIndexOf(bigArray, ctx.rn) === ctx.rn + 999)
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t(({ ctx }) => lastIndexOf(bigArray, {}) === -1)
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t(() => includes([1, 2, 3, 4, 5, 4, 3, 2, 1], 2))
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t(() => includes([0, 0, t, t], t))
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t(({ ctx }) => includes(bigArray, ctx.rn))
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t(({ ctx }) => !includes(bigArray, {}))
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Object.freeze(tests)
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export const setup = () => ({ rn: Math.trunc(Math.random() * 999) })
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