const { midpoint } = require('./_30s.js');

test('midpoint is a Function', () => {
  expect(midpoint).toBeInstanceOf(Function);
});

test('midpoint([2, 2], [4, 4]) = [3, 3]', () => {
  expect(midpoint([2, 2], [4, 4])).toEqual([3, 3]);
});

test('midpoint([4, 4], [6, 6]) = [5,5]', () => {
  expect(midpoint([4, 4], [6, 6])).toEqual([5, 5]);
});

test('midpoint([1, 3], [2, 4]) = [3,3]', () => {
  expect(midpoint([1, 3], [2, 4])).toEqual([1.5, 3.5]);
});

test('midpoint([-2, 0], [-2, 4]) = [-2,2]', () => {
  expect(midpoint([-2, 0], [-2, 4])).toEqual([-2, 2]);
});

test('midpoint([0, 0], [0, 0]) = [0,0]', () => {
  expect(midpoint([0, 0], [0, 0])).toEqual([0, 0]);
});

test('midpoint([10, -10], [20, 30]) = [15, 10]', () => {
  expect(midpoint([10, -10], [20, 30])).toEqual([15, 10]);
});

test('midpoint([7.5, -1.3], [2.7, 11.1]) = [5.1, 4.8999999999999995]', () => {
  expect(midpoint([7.5, -1.3], [2.7, 11.1])).toEqual([5.1, 4.8999999999999995]);
});