| from kafka.structs import TopicPartition | |
| from kafka.coordinator.assignors.sticky.partition_movements import PartitionMovements | |
| def test_empty_movements_are_sticky(): | |
| partition_movements = PartitionMovements() | |
| assert partition_movements.are_sticky() | |
| def test_sticky_movements(): | |
| partition_movements = PartitionMovements() | |
| partition_movements.move_partition(TopicPartition('t', 1), 'C1', 'C2') | |
| partition_movements.move_partition(TopicPartition('t', 1), 'C2', 'C3') | |
| partition_movements.move_partition(TopicPartition('t', 1), 'C3', 'C1') | |
| assert partition_movements.are_sticky() | |
| def test_should_detect_non_sticky_assignment(): | |
| partition_movements = PartitionMovements() | |
| partition_movements.move_partition(TopicPartition('t', 1), 'C1', 'C2') | |
| partition_movements.move_partition(TopicPartition('t', 2), 'C2', 'C1') | |
| assert not partition_movements.are_sticky() | |