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How to use and_raises method in autotest

Best Python code snippet using autotest_python

database_connection_unittest.py

Source:database_connection_unittest.py

...60    def _expect_reconnect(self, fail=False):61        self._fake_backend.disconnect.expect_call()62        call = self._fake_backend.connect.expect_call(**_CONNECT_KWARGS)63        if fail:64            call.and_raises(FakeDatabaseError())65    def _expect_fail_and_reconnect(self, num_reconnects, fail_last=False):66        self._fake_backend.connect.expect_call(**_CONNECT_KWARGS).and_raises(67            FakeDatabaseError())68        for i in xrange(num_reconnects):69            time.sleep.expect_call(_RECONNECT_DELAY)70            if i < num_reconnects - 1:71                self._expect_reconnect(fail=True)72            else:73                self._expect_reconnect(fail=fail_last)74    def test_connect_retry(self):75        db = self._get_database_connection()76        self._expect_fail_and_reconnect(1)77        db.connect()78        self.god.check_playback()79        self._fake_backend.disconnect.expect_call()80        self._expect_fail_and_reconnect(0)81        self.assertRaises(FakeDatabaseError, db.connect,82                          try_reconnecting=False)83        self.god.check_playback()84        db.reconnect_enabled = False85        self._fake_backend.disconnect.expect_call()86        self._expect_fail_and_reconnect(0)87        self.assertRaises(FakeDatabaseError, db.connect)88        self.god.check_playback()89    def test_max_reconnect(self):90        db = self._get_database_connection()91        db.max_reconnect_attempts = 592        self._expect_fail_and_reconnect(5, fail_last=True)93        self.assertRaises(FakeDatabaseError, db.connect)94        self.god.check_playback()95    def test_reconnect_forever(self):96        db = self._get_database_connection()97        db.max_reconnect_attempts = database_connection.RECONNECT_FOREVER98        self._expect_fail_and_reconnect(30)99        db.connect()100        self.god.check_playback()101    def _simple_connect(self, db):102        self._fake_backend.connect.expect_call(**_CONNECT_KWARGS)103        db.connect()104        self.god.check_playback()105    def test_disconnect(self):106        db = self._get_database_connection()107        self._simple_connect(db)108        self._fake_backend.disconnect.expect_call()109        db.disconnect()110        self.god.check_playback()111    def test_execute(self):112        db = self._get_database_connection()113        self._simple_connect(db)114        params = object()115        self._fake_backend.execute.expect_call('query', params)116        db.execute('query', params)117        self.god.check_playback()118    def test_execute_retry(self):119        db = self._get_database_connection()120        self._simple_connect(db)121        self._fake_backend.execute.expect_call('query', None).and_raises(122            FakeDatabaseError())123        self._expect_reconnect()124        self._fake_backend.execute.expect_call('query', None)125        db.execute('query')126        self.god.check_playback()127        self._fake_backend.execute.expect_call('query', None).and_raises(128            FakeDatabaseError())129        self.assertRaises(FakeDatabaseError, db.execute, 'query',130                          try_reconnecting=False)131if __name__ == '__main__':...

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