mergesort.spec.js

describe('Merge Sort', function(){
  it('handles an empty array', function (){
    expect(mergeSort([])).toEqual([]);
  })
  it('outputs an array of the same length as the input array', function (){
    expect(mergeSort([1, 3, 2]).length).toEqual(3)
  })
  it('sorts an array', function () {
    // expect(mergeSort([1, 3, 2])).toEqual([1, 2, 3])
    // expect(mergeSort([4, 1])).toEqual([1, 4])
    expect(mergeSort([4, 8, 2, 0, 3, 1, 9])).toEqual([0, 1, 2, 3, 4, 8, 9])
  })
})
describe('Split Array function', function() {
  it('is able to split an even array into two halves', function() {
    // your code here
    const testEvenArr = [1,2,3,4,5,6];
    expect(split(testEvenArr)).toEqual([[1,2,3],[4,5,6]]);
  });
  it('is able to split an odd array into two halves', function() {
    // your code here
    const testOddArr = [1,2,3,4,5,6,7,8,9]
    expect(split(testOddArr)).toEqual([[1,2,3,4,5],[6,7,8,9]]);
  });
});
describe('Merge Array function', function() {
  it('is able to merge two even arrays into a sorted array', function() {
    // your code here
    const first = [2,4,6];
    const second = [1,3,5];
    expect(merge(first,second)).toEqual([1,2,3,4,5,6]);
  });
  it('is able to merge two odd arrays into a sorted array', function() {
    // your code here
    const first = [1,3,5,7,9];
    const second = [2,4,6,8];
    // expect(merge(first, second)).toEqual([1,2,3,4,5,6,7,8,9]);
    expect(merge([2,3,9,20],[5,8,15])).toEqual([2,3,5,8,9,15,20]);
  });
});