def test_check_dependencies(mocker):
    mocker.patch('shutil.which', return_value='exiftool')
    mocker.patch('sys.exit')
    check_dependencies()
    assert (not sys.exit.called)
def test_check_dependencies(mocker):
    mocker.patch('shutil.which', return_value='exiftool')
    mocker.patch('sys.exit')
    check_dependencies()
    assert (not sys.exit.called)