text: const expect = require('expect');
  const isObject = require('./isObject.js');
  
  test('isObject is a Function', () => {
    expect(isObject).toBeInstanceOf(Function);
  });
  test('isObject([1, 2, 3, 4]) is a object', () => {
    expect(isObject([1, 2, 3, 4])).toBeTruthy();
  });
  test('isObject([]) is a object', () => {
    expect(isObject([])).toBeTruthy();
  });
  test('isObject({ a:1 }) is a object', () => {
    expect(isObject({ a: 1 })).toBeTruthy();
  });
  test('isObject(true) is not a object', () => {
    expect(isObject(true)).toBeFalsy();
  });
  