def test_add_pod_killed_metric(pod_scenario):
pod_scenario.schema = {
"actions": [
{
"kill": {
"force": False
}
},
]
}
magic_mock = MagicMock(return_value={
"some ip": {
"ret_code": 0
},
})
pod_scenario.executor.execute = magic_mock
mock_item = MagicMock()
mock_item.container_ids = ["docker://container1"]
mock_item.namespace = "default"
mock_item.name = "test_pod1"
items = [mock_item]
with mock.patch('powerfulseal.metriccollectors.StdoutCollector.add_pod_killed_metric') \
as metric_function:
metric_function.assert_not_called()
pod_scenario.act(items)
metric_function.assert_called_with(mock_item)
def test_doesnt_kill_when_cant_find_node(pod_scenario):
pod_scenario.schema = {
"actions": [
{
"kill": {
"force": True
}
},
]
}
pod_scenario.inventory.get_node_by_ip = MagicMock(return_value=None)
pod_scenario.logger = MagicMock()
mock = MagicMock(return_value={
"some ip": {
"ret_code": 1
},
})
pod_scenario.executor.execute = mock
mock_item1 = MagicMock()
mock_item2 = MagicMock()
items = [mock_item1, mock_item2]
pod_scenario.act(items)
assert mock.call_count == 0
assert pod_scenario.logger.info.call_args[0] == (
"Node not found for pod: %s", items[1])
def test_kills_correctly_with_force(pod_scenario, should_force):
pod_scenario.schema = {
"actions": [
{
"kill": {
"force": should_force
}
},
]
}
mock = MagicMock(return_value={
"some ip": {
"ret_code": 1
},
})
pod_scenario.executor.execute = mock
mock_item1 = MagicMock()
mock_item1.container_ids = ["docker://container1"]
mock_item2 = MagicMock()
mock_item2.container_ids = ["docker://container1"]
items = [mock_item1, mock_item2]
pod_scenario.act(items)
assert mock.call_count == 2
template = "sudo docker kill -s {signal} {container_id}"
for i, call in enumerate(mock.call_args_list):
args, kwargs = call
cmd = template.format(signal="SIGKILL" if should_force else "SIGTERM",
container_id=items[i].container_ids[0].replace(
"docker://", ""))
assert args[0] == cmd
def test_kills_with_probability(pod_scenario, prob):
random.seed(12)
sample = 10000
pod_scenario.schema = {
"actions": [
{
"kill": {
"probability": prob,
}
},
]
}
mock = MagicMock(return_value={
"some ip": {
"ret_code": 0
},
})
pod_scenario.executor.execute = mock
mock_item1 = MagicMock()
mock_item1.container_ids = ["docker://container1"]
items = [mock_item1]
for _ in range(sample):
pod_scenario.act(items)
actual_prob = float(mock.call_count / len(items)) / sample
assert (actual_prob == pytest.approx(prob, 0.05))