def test_no_format():
flags = []
check_c_format('Hello, world', flags)
assert flags == []
def test_strftime_is_not_c_format():
flags = []
check_c_format('%Y-%m-%d', flags)
assert 'c-format' not in flags
def test_escaped_percent_sign():
flags = []
check_c_format('100%%', flags)
assert 'c-format' not in flags
def test_accept_no_format_hint():
flags = ['no-c-format']
check_c_format('Hello, %s', flags)
assert 'c-format' not in flags
def test_basic_c_format():
flags = []
check_c_format('Hello, %s', flags)
assert 'c-format' in flags
def test_space_in_format():
# This is technically a violation: printf(3) allows a space in format
# strings, but in the real world this leads to many false positives.
flags = []
check_c_format('This is 5% of everything', flags)
assert flags == []
