def test_count_instances_for_two_sets(mocked_client, mocked_fetch_vmss,
mocked_all_vmss_instances):
# Arrange
scale_sets = []
scale_sets.append(vmss_provider.provide_scale_set())
scale_sets.append(vmss_provider.provide_scale_set())
mocked_fetch_vmss.return_value = scale_sets
mocked_all_vmss_instances.return_value = [vmss_provider.provide_instance()]
mocked_client.return_value = MockComputeManagementClient()
count = count_instances(None, None)
assert count == 2
def test_burn_io(mocked_command_run, mocked_command_prepare, fetch_instances,
fetch_vmss):
# arrange mocks
mocked_command_prepare.return_value = 'RunShellScript', 'burn_io.sh'
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
instance = vmss_provider.provide_instance()
instances = [instance]
fetch_vmss.return_value = scale_sets
fetch_instances.return_value = instances
config = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
# act
burn_io(filter="where name=='some_random_instance'",
duration=60,
configuration=config,
secrets=secrets)
# assert
fetch_vmss.assert_called_with("where name=='some_random_instance'", config,
secrets)
fetch_instances.assert_called_with(scale_set, None, config, secrets)
mocked_command_run.assert_called_with(
scale_set['resourceGroup'], instance, 120, {
'command_id': 'RunShellScript',
'script': ['burn_io.sh'],
'parameters': [{
'name': 'duration',
'value': 60
}]
}, secrets, config)
def test_happily_fetch_empty_list_instances_with_empty_instance_filter(
mocked_fetch_instances):
mocked_fetch_instances.return_value = []
scale_set = vmss_provider.provide_scale_set()
result = fetch_instances(scale_set, None, None)
assert len(result) == 0
def test_unhappily_fill_disk(mocked_command_run, mocked_command_prepare_path,
mocked_init_client, fetch_instances, fetch_vmss):
# arrange mocks
mocked_command_prepare_path.return_value = '/root/burn/hard'
scale_set = vmss_provider.provide_scale_set()
instance = vmss_provider.provide_instance()
fetch_vmss.return_value = [scale_set]
fetch_instances.return_value = [instance]
configuration = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
mocked_client = MockComputeManagementClient()
mocked_init_client.return_value = mocked_client
# act
with pytest.raises(FailedActivity):
fill_disk(vmss_filter="where name=='some_random_instance'",
duration=60,
size=1000,
path='/root/burn/hard',
configuration=configuration,
secrets=secrets)
# assert
fetch_vmss.assert_called_with("where name=='some_random_instance'",
configuration, secrets)
fetch_instances.assert_called_with(scale_set, None,
mocked_init_client.return_value)
def test_stress_cpu(mocked_command_run, mocked_init_client, mocked_instances,
mocked_vmss):
# arrange mocks
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
instance = vmss_provider.provide_instance()
instances = [instance]
mocked_vmss.return_value = scale_sets
mocked_instances.return_value = instances
configuration = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
duration = 60
client = MockComputeManagementClient()
mocked_init_client.return_value = client
# act
stress_cpu(vmss_filter="where name=='some_random_instance'",
duration=duration,
configuration=configuration,
secrets=secrets)
# assert
mocked_vmss.assert_called_with("where name=='some_random_instance'",
configuration, secrets)
mocked_instances.assert_called_with(scale_set, None,
mocked_init_client.return_value)
mocked_command_run.assert_called_with(scale_set['resourceGroup'],
instance,
parameters=ANY,
client=client)
def test_fill_disk(mocked_command_run, mocked_command_prepare_path,
mocked_init_client, fetch_instances, fetch_vmss):
# arrange mocks
mocked_command_prepare_path.return_value = '/root/burn/hard'
scale_set = vmss_provider.provide_scale_set()
instance = vmss_provider.provide_instance()
fetch_vmss.return_value = [scale_set]
fetch_instances.return_value = [instance]
configuration = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
mocked_client = MockComputeManagementClient()
mocked_init_client.return_value = mocked_client
duration = 60
# act
fill_disk(vmss_filter="where name=='some_random_instance'",
duration=duration,
size=1000,
path='/root/burn/hard',
configuration=configuration,
secrets=secrets)
# assert
fetch_vmss.assert_called_with("where name=='some_random_instance'",
configuration, secrets)
fetch_instances.assert_called_with(scale_set, None,
mocked_init_client.return_value)
mocked_command_run.assert_called_with(scale_set['resourceGroup'],
instance,
parameters=ANY,
client=mocked_client)
def test_network_latency(mocked_command_run, mocked_init_client,
mocked_fetch_instances, mocked_fetch_vmss):
# arrange mocks
scale_set = vmss_provider.provide_scale_set()
instance = vmss_provider.provide_instance()
mocked_fetch_vmss.return_value = [scale_set]
mocked_fetch_instances.return_value = [instance]
configuration = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
duration = 60
mocked_client = MockComputeManagementClient()
mocked_init_client.return_value = mocked_client
# act
network_latency(vmss_filter="where name=='some_random_instance'",
duration=duration,
delay=200,
jitter=50,
configuration=configuration,
secrets=secrets)
# assert
mocked_fetch_vmss.assert_called_with("where name=='some_random_instance'",
configuration, secrets)
mocked_fetch_instances.assert_called_with(scale_set, None,
mocked_init_client.return_value)
mocked_command_run.assert_called_with(scale_set['resourceGroup'],
instance,
parameters=ANY,
client=mocked_client)
def test_happily_fetch_instances_with_instance_filter_for_instance0_or_instance_2(
mocked_fetch_instances):
# arrange
instance_0 = vmss_provider.provide_instance()
instance_0['instance_id'] = '0'
instance_0['name'] = 'chaos-pool_0'
instance_1 = vmss_provider.provide_instance()
instance_1['instance_id'] = '1'
instance_1['name'] = 'chaos-pool_1'
instance_2 = vmss_provider.provide_instance()
instance_2['instance_id'] = '2'
instance_2['name'] = 'chaos-pool_2'
instances = [instance_0, instance_1, instance_2]
mocked_fetch_instances.return_value = instances
scale_set = vmss_provider.provide_scale_set()
# fire
result = fetch_instances(scale_set,
"where instance_id=='0' or instance_id=='2'",
None)
# assert
assert len(result) == 2
assert result[0].get('name') == 'chaos-pool_0'
assert result[0].get('instance_id') == '0'
assert result[1].get('name') == 'chaos-pool_2'
assert result[1].get('instance_id') == '2'
def test_succesful_fetch_instances_with_instance_criteria_for_instance0_instance_2(
mocked_fetch_instances):
# arrange
instance_0 = vmss_provider.provide_instance()
instance_0['instance_id'] = '0'
instance_0['name'] = 'chaos-pool_0'
instance_1 = vmss_provider.provide_instance()
instance_1['instance_id'] = '1'
instance_1['name'] = 'chaos-pool_1'
instance_2 = vmss_provider.provide_instance()
instance_2['instance_id'] = '2'
instance_2['name'] = 'chaos-pool_2'
instances = [instance_0, instance_1, instance_2]
mocked_fetch_instances.return_value = instances
scale_set = vmss_provider.provide_scale_set()
# fire
result = fetch_instances(scale_set, [{
'instance_id': '0'
}, {
'instance_id': '2'
}], None, None)
# assert
assert len(result) == 2
assert result[0].get('name') == 'chaos-pool_0'
assert result[0].get('instance_id') == '0'
assert result[1].get('name') == 'chaos-pool_2'
assert result[1].get('instance_id') == '2'
def test_empty_fetch_instances_without_instance_criteria(
mocked_fetch_instances):
with pytest.raises(FailedActivity) as x:
mocked_fetch_instances.return_value = []
scale_set = vmss_provider.provide_scale_set()
fetch_instances(scale_set, None, None, None)
assert "No VMSS instances" in str(x.value)
def test_succesful_fetch_vmss(mocked_fetch_vmss):
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
mocked_fetch_vmss.return_value = scale_sets
result = fetch_vmss(None, None, None)
assert len(result) == 1
assert result[0].get('name') == 'chaos-pool'
def test_delete_vmss(client, fetch_instances, fetch_vmss):
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
instance = vmss_provider.provide_instance()
instances = [instance]
fetch_vmss.return_value = scale_sets
fetch_instances.return_value = instances
client.return_value = MockComputeManagementClient()
delete_vmss(None, None, None)
def test_count_instances(mocked_client, mocked_fetch_vmss,
mocked_all_vmss_instances):
# Arrange
mocked_fetch_vmss.return_value = [vmss_provider.provide_scale_set()]
mocked_all_vmss_instances.return_value = [vmss_provider.provide_instance()]
mocked_client.return_value = MockComputeManagementClient()
count = count_instances(None, None)
assert count == 1
def test_succesful_fetch_instances_without_instance_criteria(
mocked_fetch_instances):
instance = vmss_provider.provide_instance()
instances = [instance]
mocked_fetch_instances.return_value = instances
scale_set = vmss_provider.provide_scale_set()
result = fetch_instances(scale_set, None, None, None)
assert len(result) == 1
assert result[0].get('name') == 'chaos-pool_0'
assert result[0].get('instance_id') == '0'
def test_fill_disk(mocked_command_run, mocked_command_prepare,
mocked_command_prepare_path, fetch_instances, fetch_vmss):
# arrange mocks
mocked_command_prepare.return_value = 'RunShellScript', 'fill_disk.sh'
mocked_command_prepare_path.return_value = '/root/burn/hard'
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
instance = vmss_provider.provide_instance()
instances = [instance]
fetch_vmss.return_value = scale_sets
fetch_instances.return_value = instances
config = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
# act
fill_disk(filter="where name=='some_random_instance'",
duration=60,
timeout=60,
size=1000,
path='/root/burn/hard',
configuration=config,
secrets=secrets)
# assert
fetch_vmss.assert_called_with("where name=='some_random_instance'", config,
secrets)
fetch_instances.assert_called_with(scale_set, None, config, secrets)
mocked_command_run.assert_called_with(
scale_set['resourceGroup'], instance, 120, {
'command_id':
'RunShellScript',
'script': ['fill_disk.sh'],
'parameters': [{
'name': "duration",
'value': 60
}, {
'name': "size",
'value': 1000
}, {
'name': "path",
'value': '/root/burn/hard'
}]
}, secrets, config)
def test_network_latency(mocked_command_run, mocked_command_prepare,
fetch_instances, fetch_vmss):
# arrange mocks
mocked_command_prepare.return_value = 'RunShellScript', 'network_latency.sh'
scale_set = vmss_provider.provide_scale_set()
scale_sets = [scale_set]
instance = vmss_provider.provide_instance()
instances = [instance]
fetch_vmss.return_value = scale_sets
fetch_instances.return_value = instances
config = config_provider.provide_default_config()
secrets = secrets_provider.provide_secrets_via_service_principal()
# act
network_latency(filter="where name=='some_random_instance'",
duration=60,
timeout=60,
delay=200,
jitter=50,
configuration=config,
secrets=secrets)
# assert
fetch_vmss.assert_called_with("where name=='some_random_instance'", config,
secrets)
fetch_instances.assert_called_with(scale_set, None, config, secrets)
mocked_command_prepare.assert_called_with(instance, 'network_latency')
mocked_command_run.assert_called_with(
scale_set['resourceGroup'], instance, 120, {
'command_id':
'RunShellScript',
'script': ['network_latency.sh'],
'parameters': [{
'name': "duration",
'value': 60
}, {
'name': "delay",
'value': 200
}, {
'name': "jitter",
'value': 50
}]
}, secrets, config)
def test_sadly_fetch_instances_with_invalid_instance_criteria(
mocked_fetch_instances):
# arrange
instance_0 = vmss_provider.provide_instance()
instance_0['instance_id'] = '0'
instance_1 = vmss_provider.provide_instance()
instance_1['instance_id'] = '1'
instance_2 = vmss_provider.provide_instance()
instance_2['instance_id'] = '2'
instances = [instance_0, instance_1, instance_2]
mocked_fetch_instances.return_value = instances
scale_set = vmss_provider.provide_scale_set()
# fire
with pytest.raises(InterruptExecution) as x:
fetch_instances(scale_set, "invalid filter query syntax", None)
assert "invalid query" in x.value
def test_empty_fetch_instances_with_instance_criteria(mocked_fetch_instances):
# arrange
instance_0 = vmss_provider.provide_instance()
instance_0['instance_id'] = '0'
instance_1 = vmss_provider.provide_instance()
instance_1['instance_id'] = '1'
instance_2 = vmss_provider.provide_instance()
instance_2['instance_id'] = '2'
instances = [instance_0, instance_1, instance_2]
mocked_fetch_instances.return_value = instances
scale_set = vmss_provider.provide_scale_set()
# fire
with pytest.raises(FailedActivity) as x:
fetch_instances(scale_set, [{
'instance_id': '99'
}, {
'instance_id': '100'
}, {
'instance_id': '101'
}], None, None)
assert "No VMSS instance" in x.value
