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34 lines
839 B
34 lines
839 B
4 years ago
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Array.prototype.forEach = 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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export const setup = () => {
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const arr = [1, 2, 3, 4, 5, Math.random(), 7, 10, -10, 20, -95]
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Object.getPrototypeOf([]).proto = ' [avoid for..in] '
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return { arr }
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}
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// callback is call with the item value
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t(({ eq, ctx }) => {
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const result = []
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forEach(ctx.arr, (value) => result.push(value))
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return eq(result, ctx.arr)
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})
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// callback second parameter is the index
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t(({ eq, ctx }) => {
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const result = []
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forEach(ctx.arr, (_, index) => result.push(index))
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return eq(result, [...ctx.arr.keys()])
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})
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// callback third parameter is the array
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t(({ eq, ctx }) => {
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const result = []
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forEach(ctx.arr, (_, __, arr) => result.push(arr))
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return eq(result, Array(ctx.arr.length).fill(ctx.arr))
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})
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Object.freeze(tests)
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