text: it('basic', () => {
      tests([
          [[1, 2, 3], 1, true],
          [[1, 2, 3], 4, false]
      ]);
  });
  
  it('object', () => {
      tests([
          [{ a: 1, b: 2 }, 1, true],
          [{ b: 2 }, 1, false]
      ]);
  });
  
  it('string', () => {
      tests([
          ['abc', 'a', true],
          ['abc', 'd', false]
      ]);
  });
  