[lang-ref] ( string_is_null_or_empty ) ( python )

@pytest.mark.parametrize(
    's, expected',
    [
        ('', True),
        (' ', False),
        ('a', False),
        (None, True),
        ([], False),
        (0, False),
    ],
)
def test_string_is_null_or_empty(s, expected):
    # is None + len
    is_null_or_empty = (s is None or len(str(s)) == 0)
    assert is_null_or_empty == expected

@pytest.mark.parametrize(
    's, expected',
    [
        ('', True),
        (' ', False),
        ('a', False),
        (None, True),
        ([], True), # !!!
        (0, True),  # !!!
    ],
)
def test_string_is_null_or_empty_alternative(s, expected):
    # deprecated for me: misleading as IsNullOrEmpty
    is_falsy = (not s)
    assert is_falsy == expected