import { getEntries, hasOwn, isObjectEmpty } from './func.utils';

describe('getEntries', () => {
  it('should return an empty array if the input object is empty', () => {
    const obj = {};
    const result = getEntries(obj);

    expect(result).toEqual([]);
  });

  it('should return an array of key-value pairs for each property in the input object', () => {
    const obj = {
      name: 'John',
      age: 30,
      city: 'New York',
    };
    const result = getEntries(obj);

    expect(result).toEqual([
      ['name', 'John'],
      ['age', 30],
      ['city', 'New York'],
    ]);
  });

  it('should not include properties from the object prototype chain', () => {
    const obj = Object.create({ prop: 'value' });
    obj.name = 'John';
    obj.age = 30;
    const result = getEntries(obj);

    expect(result).toEqual([
      ['name', 'John'],
      ['age', 30],
    ]);
  });
});

describe('hasOwn', () => {
  it('should return true if the object has the specified property', () => {
    const obj = { name: 'John', age: 30 };
    const prop = 'name';
    const result = hasOwn(obj, prop);

    expect(result).toBe(true);
  });

  it('should return false if the object does not have the specified property', () => {
    const obj = { name: 'John', age: 30 };
    const prop = 'city';
    const result = hasOwn(obj, prop);

    expect(result).toBe(false);
  });
});

describe('isObjectEmpty', () => {
  it('should return true if the object is empty', () => {
    const obj = {};
    const result = isObjectEmpty(obj);

    expect(result).toBe(true);
  });

  it('should return false if the object is not empty', () => {
    const obj = { name: 'John', age: 30 };
    const result = isObjectEmpty(obj);

    expect(result).toBe(false);
  });
});