import { merge, mergeSort } from '../MergeSort' describe('merge', () => { it('should merge arrays correctly', () => { expect(merge([5, 4], [1, 2, 3])).toEqual([1, 2, 3, 5, 4]) expect(merge([], [1, 2])).toEqual([1, 2]) expect(merge([1, 2, 3], [1])).toEqual([1, 1, 2, 3]) expect(merge([], [])).toEqual([]) }) }) describe('MergeSort', () => { it('should work for empty arrays', () => { expect(mergeSort([])).toEqual([]) }) it('should sort arrays correctly', () => { expect(mergeSort([5, 4])).toEqual([4, 5]) expect(mergeSort([8, 4, 10, 15, 9])).toEqual([4, 8, 9, 10, 15]) expect(mergeSort([1, 2, 3])).toEqual([1, 2, 3]) expect(mergeSort([10, 5, 3, 8, 2, 6, 4, 7, 9, 1])).toEqual([ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]) }) })