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63 lines
1.7 KiB
63 lines
1.7 KiB
5 years ago
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from functools import wraps
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import logging
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logger = logging.getLogger('peewee')
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class _QueryLogHandler(logging.Handler):
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def __init__(self, *args, **kwargs):
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self.queries = []
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logging.Handler.__init__(self, *args, **kwargs)
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def emit(self, record):
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self.queries.append(record)
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class count_queries(object):
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def __init__(self, only_select=False):
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self.only_select = only_select
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self.count = 0
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def get_queries(self):
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return self._handler.queries
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def __enter__(self):
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self._handler = _QueryLogHandler()
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logger.setLevel(logging.DEBUG)
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logger.addHandler(self._handler)
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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logger.removeHandler(self._handler)
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if self.only_select:
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self.count = len([q for q in self._handler.queries
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if q.msg[0].startswith('SELECT ')])
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else:
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self.count = len(self._handler.queries)
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class assert_query_count(count_queries):
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def __init__(self, expected, only_select=False):
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super(assert_query_count, self).__init__(only_select=only_select)
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self.expected = expected
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def __call__(self, f):
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@wraps(f)
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def decorated(*args, **kwds):
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with self:
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ret = f(*args, **kwds)
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self._assert_count()
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return ret
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return decorated
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def _assert_count(self):
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error_msg = '%s != %s' % (self.count, self.expected)
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assert self.count == self.expected, error_msg
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def __exit__(self, exc_type, exc_val, exc_tb):
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super(assert_query_count, self).__exit__(exc_type, exc_val, exc_tb)
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self._assert_count()
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