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x/rambda/source/partition.spec.js

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import {partition} from './partition'
test('with array', () => { const predicate = x => x > 2 const list = [1, 2, 3, 4]
const result = partition(predicate, list) const expectedResult = [ [3, 4], [1, 2], ]
expect(result).toEqual(expectedResult)})
test('with object', () => { const predicate = (value, prop) => { expect(typeof prop).toBe('string')
return value > 2 } const hash = { a: 1, b: 2, c: 3, d: 4, }
const result = partition(predicate)(hash) const expectedResult = [ { c: 3, d: 4, }, { a: 1, b: 2, }, ]
expect(result).toEqual(expectedResult)})
test('readme example', () => { const list = [1, 2, 3] const obj = { a: 1, b: 2, c: 3, } const predicate = x => x > 2
const result = [partition(predicate, list), partition(predicate, obj)] const expected = [ [[3], [1, 2]], [ {c: 3}, { a: 1, b: 2, }, ], ] expect(result).toEqual(expected)})