text: import pytest
  
  from snapchat_dataset.skeleton import fib, main
  
  __author__ = "elle-p97"
  __copyright__ = "elle-p97"
  __license__ = "MIT"
  
  
  def test_fib():
      """API Tests"""
      assert fib(1) == 1
      assert fib(2) == 1
      assert fib(7) == 13
      with pytest.raises(AssertionError):
          fib(-10)
  
  
  def test_main(capsys):
      """CLI Tests"""
      # capsys is a pytest fixture that allows asserts agains stdout/stderr
      # https://docs.pytest.org/en/stable/capture.html
      main(["7"])
      captured = capsys.readouterr()
      assert "The 7-th Fibonacci number is 13" in captured.out
  