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


  test('round is a Function', () => {
  expect(round).toBeInstanceOf(Function);
});
  t.equal(round(1.005, 2), 1.01, "round(1.005, 2) returns 1.01");
  t.equal(round(123.3423345345345345344, 11), 123.34233453453, "round(123.3423345345345345344, 11) returns 123.34233453453");
  t.equal(round(3.342, 11), 3.342, "round(3.342, 11) returns 3.342");
  t.equal(round(1.005), 1, "round(1.005) returns 1");
  test('round([1.005, 2]) returns NaN', () => {
  expect(isNaN(round([1.005, 2]))).toBeTruthy();
});
  test('round(string) returns NaN', () => {
  expect(isNaN(round('string'))).toBeTruthy();
});
  test('round() returns NaN', () => {
  expect(isNaN(round())).toBeTruthy();
});
  test('round(132, 413, 4134) returns NaN', () => {
  expect(isNaN(round(132, 413, 4134))).toBeTruthy();
});
  test('round({a: 132}, 413) returns NaN', () => {
  expect(isNaN(round({a: 132}, 413))).toBeTruthy();
});

  let start = new Date().getTime();
  round(123.3423345345345345344, 11);
  let end = new Date().getTime();
  test('round(123.3423345345345345344, 11) takes less than 2s to run', () => {
  expect((end - start) < 2000).toBeTruthy();
});