44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
import { expect } from 'chai';
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import { curry1, curry2, curry3 } from '../../lib/util/curry';
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describe('curry1', () => {
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it('can curry one arguments', () => {
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const addOne = curry1((x) => x + 1);
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expect(addOne(3)).to.equal(4);
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expect(addOne()(3)).to.equal(4);
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});
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it('will take up to two extra arguments', () => {
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const curried = curry1((a, b, c) => [a, b, c]);
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expect(curried(1, 2, 3, 4)).to.eql([1, 2, 3]);
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});
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});
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describe('curry2', () => {
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it('can curry two arguments', () => {
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const add = curry2((x, y) => x + y);
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expect(add(3)(4)).to.equal(7);
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expect(add()(3)()(4)).to.equal(7);
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expect(add(3, 4)).to.equal(7);
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});
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it('will take up to two extra arguments', () => {
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const curried = curry2((a, b, c, d) => [a, b, c, d]);
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expect(curried(1, 2, 3, 4, 5)).to.eql([1, 2, 3, 4]);
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});
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});
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describe('curry3', () => {
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it('can curry three arguments', () => {
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const add = curry3((x, y, z) => x + y + z);
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expect(add(3)(4)(5)).to.equal(12);
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expect(add()(3)()(4, 5)).to.equal(12);
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expect(add(3, 4, 5)).to.equal(12);
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});
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it('will take up to two extra arguments', () => {
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const curried = curry3((a, b, c, d, e) => [a, b, c, d, e]);
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expect(curried(1, 2, 3, 4, 5, 6)).to.eql([1, 2, 3, 4, 5]);
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});
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});
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