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from struct import pack
from unittest.mock import Mock
import pytest
from amqp import spec
from amqp.basic_message import Message
from amqp.exceptions import UnexpectedFrame
from amqp.method_framing import frame_handler, frame_writer
class test_frame_handler:
@pytest.fixture(autouse=True)
def setup_conn(self):
self.conn = Mock(name='connection')
self.conn.bytes_recv = 0
self.callback = Mock(name='callback')
self.g = frame_handler(self.conn, self.callback)
def test_header(self):
buf = pack('>HH', 60, 51)
assert self.g((1, 1, buf))
self.callback.assert_called_with(1, (60, 51), buf, None)
assert self.conn.bytes_recv
def test_header_message_empty_body(self):
assert not self.g((1, 1, pack('>HH', *spec.Basic.Deliver)))
self.callback.assert_not_called()
with pytest.raises(UnexpectedFrame):
self.g((1, 1, pack('>HH', *spec.Basic.Deliver)))
m = Message()
m.properties = {}
buf = pack('>HxxQ', m.CLASS_ID, 0)
buf += m._serialize_properties()
assert self.g((2, 1, buf))
self.callback.assert_called()
msg = self.callback.call_args[0][3]
self.callback.assert_called_with(
1, msg.frame_method, msg.frame_args, msg,
)
def test_header_message_content(self):
assert not self.g((1, 1, pack('>HH', *spec.Basic.Deliver)))
self.callback.assert_not_called()
m = Message()
m.properties = {}
buf = pack('>HxxQ', m.CLASS_ID, 16)
buf += m._serialize_properties()
assert not self.g((2, 1, buf))
self.callback.assert_not_called()
assert not self.g((3, 1, b'thequick'))
self.callback.assert_not_called()
assert self.g((3, 1, b'brownfox'))
self.callback.assert_called()
msg = self.callback.call_args[0][3]
self.callback.assert_called_with(
1, msg.frame_method, msg.frame_args, msg,
)
assert msg.body == b'thequickbrownfox'
def test_heartbeat_frame(self):
assert not self.g((8, 1, ''))
self.callback.assert_not_called()
assert self.conn.bytes_recv
class test_frame_writer:
@pytest.fixture(autouse=True)
def setup_conn(self):
self.connection = Mock(name='connection')
self.transport = self.connection.Transport()
self.connection.frame_max = 512
self.connection.bytes_sent = 0
self.g = frame_writer(self.connection, self.transport)
self.write = self.transport.write
def test_write_fast_header(self):
frame = 1, 1, spec.Queue.Declare, b'x' * 30, None
self.g(*frame)
self.write.assert_called()
def test_write_fast_content(self):
msg = Message(body=b'y' * 10, content_type='utf-8')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
assert 'content_encoding' not in msg.properties
def test_write_slow_content(self):
msg = Message(body=b'y' * 2048, content_type='utf-8')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
assert 'content_encoding' not in msg.properties
def test_write_zero_len_body(self):
msg = Message(body=b'', content_type='application/octet-stream')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
assert 'content_encoding' not in msg.properties
def test_write_fast_unicode(self):
msg = Message(body='\N{CHECK MARK}')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
memory = self.write.call_args[0][0]
assert isinstance(memory, memoryview)
assert '\N{CHECK MARK}'.encode() in memory.tobytes()
assert msg.properties['content_encoding'] == 'utf-8'
def test_write_slow_unicode(self):
msg = Message(body='y' * 2048 + '\N{CHECK MARK}')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
memory = self.write.call_args[0][0]
assert isinstance(memory, bytes)
assert '\N{CHECK MARK}'.encode() in memory
assert msg.properties['content_encoding'] == 'utf-8'
def test_write_non_utf8(self):
msg = Message(body='body', content_encoding='utf-16')
frame = 2, 1, spec.Basic.Publish, b'x' * 10, msg
self.g(*frame)
self.write.assert_called()
memory = self.write.call_args[0][0]
assert isinstance(memory, memoryview)
assert 'body'.encode('utf-16') in memory.tobytes()
assert msg.properties['content_encoding'] == 'utf-16'
def test_write_frame__fast__buffer_store_resize(self):
"""The buffer_store is resized when the connection's frame_max is increased."""
small_msg = Message(body='t')
small_frame = 2, 1, spec.Basic.Publish, b'x' * 10, small_msg
self.g(*small_frame)
self.write.assert_called_once()
write_arg = self.write.call_args[0][0]
assert isinstance(write_arg, memoryview)
assert len(write_arg) < self.connection.frame_max
self.connection.reset_mock()
# write a larger message to the same frame_writer after increasing frame_max
large_msg = Message(body='t' * (self.connection.frame_max + 10))
large_frame = 2, 1, spec.Basic.Publish, b'x' * 10, large_msg
original_frame_max = self.connection.frame_max
self.connection.frame_max += 100
self.g(*large_frame)
self.write.assert_called_once()
write_arg = self.write.call_args[0][0]
assert isinstance(write_arg, memoryview)
assert len(write_arg) > original_frame_max
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