def test_neg_cache_set_seq_cut_off_policy(pyocf_ctx, cm, cls):
"""
Test whether it is possible to change cache seq cut-off policy to invalid value
:param pyocf_ctx: basic pyocf context fixture
:param cm: cache mode we start with
:param cls: cache line size we start with
:return:
"""
# Start cache device
cache_device = Volume(S.from_MiB(30))
cache = Cache.start_on_device(
cache_device, cache_mode=cm, cache_line_size=cls
)
# Create 2 core devices
core_device1 = Volume(S.from_MiB(10))
core1 = Core.using_device(core_device1)
core_device2 = Volume(S.from_MiB(10))
core2 = Core.using_device(core_device2)
# Add cores
cache.add_core(core1)
cache.add_core(core2)
# Change cache seq cut off policy to invalid one and check if failed
for i in generate_random_numbers(c_uint32):
if i in [item.value for item in SeqCutOffPolicy]:
continue
with pytest.raises(OcfError, match="Error setting cache seq cut off policy"):
cache.set_seq_cut_off_policy(i)
def test_neg_change_cache_mode(pyocf_ctx, cm, cls):
"""
Test whether it is possible to change cache mode to invalid value.
:param pyocf_ctx: basic pyocf context fixture
:param cm: cache mode we start with
:param cls: cache line size we start with
"""
# Start cache device
cache_device = Volume(S.from_MiB(30))
cache = Cache.start_on_device(
cache_device, cache_mode=cm, cache_line_size=cls
)
# Change cache mode to invalid one and check if failed
for i in generate_random_numbers(c_uint32):
if i in [item.value for item in CacheMode]:
continue
with pytest.raises(OcfError, match="Error changing cache mode"):
cache.change_cache_mode(i)
def test_neg_attach_cls(pyocf_ctx, cm, cls):
"""
Test whether it is possible to change cache line size to
invalid value while attaching cache device
:param pyocf_ctx: basic pyocf context fixture
:param cm: cache mode we start with
:param cls: cache line size we start with
:return:
"""
# Start cache device
cache_device = Volume(S.from_MiB(30))
cache = Cache(owner=cache_device.owner, cache_mode=cm, cache_line_size=cls)
cache.start_cache()
# Check whether it is possible to attach cache device with invalid cache line size
for i in generate_random_numbers(c_uint64):
if i in [item.value for item in CacheLineSize]:
continue
with pytest.raises(OcfError, match="Attaching cache device failed"):
cache.attach_device(cache_device, cache_line_size=i)
def test_neg_set_acp_param(pyocf_ctx, cm, cls):
"""
Test whether it is possible to set invalid param for acp cleaning policy
:param pyocf_ctx: basic pyocf context fixture
:param cm: cache mode we start with
:param cls: cache line size we start with
:return:
"""
# Start cache device
cache_device = Volume(S.from_MiB(30))
cache = Cache.start_on_device(
cache_device, cache_mode=cm, cache_line_size=cls
)
# Change invalid acp param and check if failed
for i in generate_random_numbers(c_uint32):
if i in [item.value for item in AcpParams]:
continue
with pytest.raises(OcfError, match="Error setting cleaning policy param"):
cache.set_cleaning_policy_param(CleaningPolicy.ALRU, i, 1)
:param pyocf_ctx: basic pyocf context fixture
:param c_uint32_randomize: metadata layout enum value to start cache with
:param cm: cache mode value to start cache with
:param cls: cache line size value to start cache with
"""
if c_uint32_randomize not in [item.value for item in MetadataLayout]:
with pytest.raises(OcfError, match="OCF_ERR_INVAL"):
try_start_cache(metadata_layout=c_uint32_randomize, cache_mode=cm, cache_line_size=cls)
else:
logger.warning(
f"Test skipped for valid metadata layout enum value: '{c_uint32_randomize}'. ")
@pytest.mark.security
@pytest.mark.parametrize("cls", CacheLineSize)
@pytest.mark.parametrize('max_wb_queue_size', generate_random_numbers(c_uint32, 10))
def test_fuzzy_start_max_queue_size(pyocf_ctx, max_wb_queue_size, c_uint32_randomize, cls):
"""
Test whether it is impossible to start cache with invalid dependence between max queue size
and queue unblock size.
:param pyocf_ctx: basic pyocf context fixture
:param max_wb_queue_size: max queue size value to start cache with
:param c_uint32_randomize: queue unblock size value to start cache with
:param cls: cache line size value to start cache with
"""
if c_uint32_randomize >= max_wb_queue_size:
with pytest.raises(OcfError, match="OCF_ERR_INVAL"):
try_start_cache(
max_queue_size=max_wb_queue_size,
queue_unblock_size=c_uint32_randomize,
cache_mode=CacheMode.WB,