from __future__ import absolute_import, unicode_literals import pytest import socket from case import ContextMock, Mock, patch from kombu.mixins import ConsumerMixin def Message(body, content_type='text/plain', content_encoding='utf-8'): m = Mock(name='Message') m.body = body m.content_type = content_type m.content_encoding = content_encoding return m class Cons(ConsumerMixin): def __init__(self, consumers): self.calls = Mock(name='ConsumerMixin') self.calls.get_consumers.return_value = consumers self.get_consumers = self.calls.get_consumers self.on_connection_revived = self.calls.on_connection_revived self.on_consume_ready = self.calls.on_consume_ready self.on_consume_end = self.calls.on_consume_end self.on_iteration = self.calls.on_iteration self.on_decode_error = self.calls.on_decode_error self.on_connection_error = self.calls.on_connection_error self.extra_context = ContextMock(name='extra_context') self.extra_context.return_value = self.extra_context class test_ConsumerMixin: def _context(self): Acons = ContextMock(name='consumerA') Bcons = ContextMock(name='consumerB') c = Cons([Acons, Bcons]) _conn = c.connection = ContextMock(name='connection') est = c.establish_connection = Mock(name='est_connection') est.return_value = _conn return c, Acons, Bcons def test_consume(self): c, Acons, Bcons = self._context() c.should_stop = False it = c.consume(no_ack=True) next(it) Acons.__enter__.assert_called_with() Bcons.__enter__.assert_called_with() c.extra_context.__enter__.assert_called_with() c.on_consume_ready.assert_called() c.on_iteration.assert_called_with() c.connection.drain_events.assert_called_with(timeout=1) next(it) next(it) next(it) c.should_stop = True with pytest.raises(StopIteration): next(it) def test_consume_drain_raises_socket_error(self): c, Acons, Bcons = self._context() c.should_stop = False it = c.consume(no_ack=True) c.connection.drain_events.side_effect = socket.error with pytest.raises(socket.error): next(it) def se2(*args, **kwargs): c.should_stop = True raise socket.error() c.connection.drain_events.side_effect = se2 it = c.consume(no_ack=True) with pytest.raises(StopIteration): next(it) def test_consume_drain_raises_socket_timeout(self): c, Acons, Bcons = self._context() c.should_stop = False it = c.consume(no_ack=True, timeout=1) def se(*args, **kwargs): c.should_stop = True raise socket.timeout() c.connection.drain_events.side_effect = se with pytest.raises(socket.error): next(it) def test_Consumer_context(self): c, Acons, Bcons = self._context() with c.Consumer() as (conn, channel, consumer): assert conn is c.connection assert channel is conn.default_channel c.on_connection_revived.assert_called_with() c.get_consumers.assert_called() cls = c.get_consumers.call_args[0][0] subcons = cls() assert subcons.on_decode_error is c.on_decode_error assert subcons.channel is conn.default_channel Acons.__enter__.assert_called_with() Bcons.__enter__.assert_called_with() c.on_consume_end.assert_called_with(conn, channel) class test_ConsumerMixin_interface: def setup(self): self.c = ConsumerMixin() def test_get_consumers(self): with pytest.raises(NotImplementedError): self.c.get_consumers(Mock(), Mock()) def test_on_connection_revived(self): assert self.c.on_connection_revived() is None def test_on_consume_ready(self): assert self.c.on_consume_ready(Mock(), Mock(), []) is None def test_on_consume_end(self): assert self.c.on_consume_end(Mock(), Mock()) is None def test_on_iteration(self): assert self.c.on_iteration() is None def test_on_decode_error(self): message = Message('foo') with patch('kombu.mixins.error') as error: self.c.on_decode_error(message, KeyError('foo')) error.assert_called() message.ack.assert_called_with() def test_on_connection_error(self): with patch('kombu.mixins.warn') as warn: self.c.on_connection_error(KeyError('foo'), 3) warn.assert_called() def test_extra_context(self): with self.c.extra_context(Mock(), Mock()): pass def test_restart_limit(self): assert self.c.restart_limit def test_connection_errors(self): conn = Mock(name='connection') self.c.connection = conn conn.connection_errors = (KeyError,) assert self.c.connection_errors == conn.connection_errors conn.channel_errors = (ValueError,) assert self.c.channel_errors == conn.channel_errors def test__consume_from(self): a = ContextMock(name='A') b = ContextMock(name='B') a.__enter__ = Mock(name='A.__enter__') b.__enter__ = Mock(name='B.__enter__') with self.c._consume_from(a, b): pass a.__enter__.assert_called_with() b.__enter__.assert_called_with() def test_establish_connection(self): conn = ContextMock(name='connection') conn.clone.return_value = conn self.c.connection = conn self.c.connect_max_retries = 3 with self.c.establish_connection() as conn: assert conn conn.ensure_connection.assert_called_with( self.c.on_connection_error, 3, ) def test_maybe_conn_error(self): conn = ContextMock(name='connection') conn.connection_errors = (KeyError,) conn.channel_errors = () self.c.connection = conn def raises(): raise KeyError('foo') self.c.maybe_conn_error(raises) def test_run(self): conn = ContextMock(name='connection') self.c.connection = conn conn.connection_errors = (KeyError,) conn.channel_errors = () consume = self.c.consume = Mock(name='c.consume') def se(*args, **kwargs): self.c.should_stop = True return [1] self.c.should_stop = False consume.side_effect = se self.c.run() def test_run_restart_rate_limited(self): conn = ContextMock(name='connection') self.c.connection = conn conn.connection_errors = (KeyError,) conn.channel_errors = () consume = self.c.consume = Mock(name='c.consume') with patch('kombu.mixins.sleep') as sleep: counter = [0] def se(*args, **kwargs): if counter[0] >= 1: self.c.should_stop = True counter[0] += 1 return counter self.c.should_stop = False consume.side_effect = se self.c.run() sleep.assert_called() def test_run_raises(self): conn = ContextMock(name='connection') self.c.connection = conn conn.connection_errors = (KeyError,) conn.channel_errors = () consume = self.c.consume = Mock(name='c.consume') with patch('kombu.mixins.warn') as warn: def se_raises(*args, **kwargs): self.c.should_stop = True raise KeyError('foo') self.c.should_stop = False consume.side_effect = se_raises self.c.run() warn.assert_called()