Viewing file:  test_utils.py (1.81 KB) -rw-r--r--
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from functools import wraps
import logging
logger = logging.getLogger('peewee')
class _QueryLogHandler(logging.Handler):
def __init__(self, *args, **kwargs):
self.queries = []
logging.Handler.__init__(self, *args, **kwargs)
def emit(self, record):
# Counts all entries logged to the "peewee" logger by execute_sql().
if record.name == 'peewee':
self.queries.append(record)
class count_queries(object):
def __init__(self, only_select=False):
self.only_select = only_select
self.count = 0
def get_queries(self):
return self._handler.queries
def __enter__(self):
self._handler = _QueryLogHandler()
logger.setLevel(logging.DEBUG)
logger.addHandler(self._handler)
return self
def __exit__(self, exc_type, exc_val, exc_tb):
logger.removeHandler(self._handler)
if self.only_select:
self.count = len([q for q in self._handler.queries
if q.msg[0].startswith('SELECT ')])
else:
self.count = len(self._handler.queries)
class assert_query_count(count_queries):
def __init__(self, expected, only_select=False):
super(assert_query_count, self).__init__(only_select=only_select)
self.expected = expected
def __call__(self, f):
@wraps(f)
def decorated(*args, **kwds):
with self:
ret = f(*args, **kwds)
self._assert_count()
return ret
return decorated
def _assert_count(self):
error_msg = '%s != %s' % (self.count, self.expected)
assert self.count == self.expected, error_msg
def __exit__(self, exc_type, exc_val, exc_tb):
super(assert_query_count, self).__exit__(exc_type, exc_val, exc_tb)
self._assert_count()
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