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Shuumatsu/redux compose test Secret

Last active March 27, 2017 06:28
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redux compose test
it('composes functions from right to left', () => {
const a = next => x => next(x + 'a')
const b = next => x => next(x + 'b')
const c = next => x => next(x + 'c')
const final = x => x
expect(compose(a, b, c)(final)('')).toBe('abc')
expect(compose(b, c, a)(final)('')).toBe('bca')
expect(compose(c, a, b)(final)('')).toBe('cab')
})
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