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46 lines
1.2 KiB
46 lines
1.2 KiB
5 years ago
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Array.prototype.some = Array.prototype.every = 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 greaterEq10 = (n) => n >= 10
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t(({ eq, ctx }) => eq(some(ctx.small, greaterEq10), false))
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t(({ eq, ctx }) => eq(some(ctx.mixed, greaterEq10), true))
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t(({ eq, ctx }) => eq(some(ctx.big, greaterEq10), true))
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t(({ eq, ctx }) => eq(every(ctx.small, greaterEq10), false))
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t(({ eq, ctx }) => eq(every(ctx.mixed, greaterEq10), false))
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t(({ eq, ctx }) => eq(every(ctx.big, greaterEq10), true))
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t(({ eq, ctx }) => eq(none(ctx.small, greaterEq10), true))
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t(({ eq, ctx }) => eq(none(ctx.mixed, greaterEq10), false))
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t(({ eq, ctx }) => eq(none(ctx.big, greaterEq10), false))
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// the function should not be called more than needed
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t(({ eq, ctx }) => {
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let count = 0
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some(ctx.big, () => ++count > 2)
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return eq(count, 3)
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})
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t(({ eq, ctx }) => {
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let count = 0
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every(ctx.big, () => ++count < 3)
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return eq(count, 3)
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})
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t(({ eq, ctx }) => {
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let count = 0
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none(ctx.big, () => ++count > 2)
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return eq(count, 3)
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})
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Object.freeze(tests)
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export const setup = () => ({
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small: [3, 6, 1, 7, 2],
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mixed: [23, 4, 10, 25, 6],
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big: [43, 30, 16, 57, 10],
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})
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