const expect = require('expect');
const randomIntArrayInRange = require('./randomIntArrayInRange.js');


  test('randomIntArrayInRange is a Function', () => {
  expect(randomIntArrayInRange).toBeInstanceOf(Function);
});
  const lowerLimit = Math.floor(Math.random() * 20);
  const upperLimit = Math.floor(lowerLimit + Math.random() * 10);
  const arr = randomIntArrayInRange(lowerLimit,upperLimit, 10);
  test('The returned array contains only integers', () => {
  expect(arr.every(x => typeof x === 'number')).toBeTruthy();
});
  t.equal(arr.length, 10, 'The returned array has the proper length');
  test('The returned array\'s values lie between provided lowerLimit and upperLimit (both inclusive).', () => {
  expect(arr.every(x => (x >= lowerLimit) && (x <= upperLimit))).toBeTruthy();
});