def test_decompression_of_official_corrupt_fixtures(fixture_name):
fixture_data = load_fixture(fixture_name)
with pytest.raises(BaseSnappyError):
decompress(fixture_data)
# now ensure that the canonical implementation errors too
with pytest.raises(UncompressError):
libsnappy_decompress(fixture_data)
def test_decompress_error_parity(value):
try:
py_result = decompress(value)
except PY_SNAPPY_ERRORS:
py_snappy_error = True
else:
py_snappy_error = False
try:
lib_result = libsnappy_decompress(value)
except LIB_SNAPPY_ERRORS:
lib_snappy_error = True
else:
lib_snappy_error = False
if py_snappy_error and lib_snappy_error:
pass
elif not py_snappy_error and not lib_snappy_error:
assert lib_result == py_result
else:
raise AssertionError(
f"behavioral mismatch: py_snappy: {pass_fail(py_snappy_error)} lib-snappy: {pass_fail(lib_snappy_error)}" # noqa: E501
)
def test_decompress_empty_string():
with pytest.raises(CorruptError):
decompress(b"")
def test_decompress_libsnappy_compressed_test_fixture(fixture_name):
fixture_data = load_fixture(fixture_name)
intermediate = libsnappy_compress(fixture_data)
actual = decompress(intermediate)
assert fixture_data == actual
def test_compression_round_trip_of_official_test_fixtures(fixture_name):
fixture_data = load_fixture(fixture_name)
intermediate = compress(fixture_data)
actual = decompress(intermediate)
assert fixture_data == actual
def test_local_decompress_libsnappy_compressed(value):
intermediate = libsnappy_compress(value)
result = decompress(intermediate)
assert value == result
def test_round_trip(value):
intermediate = compress(value)
result = decompress(intermediate)
assert value == result