text: import unless from '.'
  
  var getEven = unless(i => i % 2 === 0, i => i + 1)
  
  test('applies callback if condition is false', () => {
    expect(getEven(1)).toBe(2)
  })
  
  test('returns passed value if condition is true', () => {
    expect(getEven(2)).toBe(2)
  })
  