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# pylint: skip-file
from __future__ import absolute_import
import pytest
from kafka.coordinator.assignors.range import RangePartitionAssignor
from kafka.coordinator.assignors.roundrobin import RoundRobinPartitionAssignor
from kafka.coordinator.protocol import (
ConsumerProtocolMemberMetadata, ConsumerProtocolMemberAssignment)
@pytest.fixture
def cluster(mocker):
cluster = mocker.MagicMock()
cluster.partitions_for_topic.return_value = set([0, 1, 2])
return cluster
def test_assignor_roundrobin(cluster):
assignor = RoundRobinPartitionAssignor
member_metadata = {
'C0': assignor.metadata(set(['t0', 't1'])),
'C1': assignor.metadata(set(['t0', 't1'])),
}
ret = assignor.assign(cluster, member_metadata)
expected = {
'C0': ConsumerProtocolMemberAssignment(
assignor.version, [('t0', [0, 2]), ('t1', [1])], b''),
'C1': ConsumerProtocolMemberAssignment(
assignor.version, [('t0', [1]), ('t1', [0, 2])], b'')
}
assert ret == expected
assert set(ret) == set(expected)
for member in ret:
assert ret[member].encode() == expected[member].encode()
def test_assignor_range(cluster):
assignor = RangePartitionAssignor
member_metadata = {
'C0': assignor.metadata(set(['t0', 't1'])),
'C1': assignor.metadata(set(['t0', 't1'])),
}
ret = assignor.assign(cluster, member_metadata)
expected = {
'C0': ConsumerProtocolMemberAssignment(
assignor.version, [('t0', [0, 1]), ('t1', [0, 1])], b''),
'C1': ConsumerProtocolMemberAssignment(
assignor.version, [('t0', [2]), ('t1', [2])], b'')
}
assert ret == expected
assert set(ret) == set(expected)
for member in ret:
assert ret[member].encode() == expected[member].encode()
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