def test_get_predecessor(self):
"""Validate selection of predecessors.
"""
goLock = "_c_8eb60557ba51e0da67eefc47467d3f34-lock-0000000031"
pyLock = "514e5a831836450cb1a56c741e990fd8__lock__0000000032"
children = ["hello", goLock, "world", pyLock]
client = mock.MagicMock()
client.get_children.return_value = children
lock = Lock(client, "test")
assert lock._get_predecessor(pyLock) is None
def test_get_predecessor_go(self):
"""Test selection of predecessor when instructed to consider go-zk
locks.
"""
goLock = "_c_8eb60557ba51e0da67eefc47467d3f34-lock-0000000031"
pyLock = "514e5a831836450cb1a56c741e990fd8__lock__0000000032"
children = ["hello", goLock, "world", pyLock]
client = mock.MagicMock()
client.get_children.return_value = children
lock = Lock(client, "test", extra_lock_patterns=["-lock-"])
assert lock._get_predecessor(pyLock) == goLock
