def init_counts(self, counts_len):
"""Called after instantiating with a compressed payload
Params:
counts_len counts size to use based on decoded settings in the header
"""
assert(self._data and counts_len and self.counts_len == 0)
self.counts_len = counts_len
self._init_counts()
results = decode(self._data, payload_header_size, addressof(self.counts), counts_len)
# no longer needed
self._data = None
return results
def init_counts(self, counts_len):
'''Called after instantiating with a compressed payload
Params:
counts_len counts size to use based on decoded settings in the header
'''
assert self._data and counts_len and self.counts_len == 0
self.counts_len = counts_len
self._init_counts()
results = decode(self._data, payload_header_size,
addressof(self.counts), counts_len, self.word_size)
# no longer needed
self._data = None
return results
def check_zz_identity(src_array, int_type, min_nz_index, max_nz_index, total_count, offset):
dst_len = (sizeof(int_type) + 1) * ARRAY_SIZE
dst = (c_uint8 * (offset + dst_len))()
varint_len = encode(addressof(src_array), ARRAY_SIZE, sizeof(int_type),
addressof(dst) + offset, dst_len)
varint_string = string_at(dst, varint_len + offset)
dst_array = (int_type * ARRAY_SIZE)()
res = decode(varint_string, offset, addressof(dst_array), ARRAY_SIZE, sizeof(int_type))
assert(res['total'] == total_count)
if total_count:
assert(res['min_nonzero_index'] == min_nz_index)
assert(res['max_nonzero_index'] == max_nz_index)
for index in range(ARRAY_SIZE):
assert(dst_array[index] == src_array[index])
def check_zz_identity(src_array, int_type, min_nz_index, max_nz_index,
total_count, offset):
dst_len = (sizeof(int_type) + 1) * ARRAY_SIZE
dst = (c_uint8 * (offset + dst_len))()
varint_len = encode(addressof(src_array), ARRAY_SIZE, sizeof(int_type),
addressof(dst) + offset, dst_len)
varint_string = string_at(dst, varint_len + offset)
dst_array = (int_type * ARRAY_SIZE)()
res = decode(varint_string, offset, addressof(dst_array), ARRAY_SIZE,
sizeof(int_type))
assert res['total'] == total_count
if total_count:
assert res['min_nonzero_index'] == min_nz_index
assert res['max_nonzero_index'] == max_nz_index
for index in range(ARRAY_SIZE):
assert dst_array[index] == src_array[index]
def test_zz_decode_errors():
with pytest.raises(TypeError):
decode(None, None, 0, 0)
dst_array = (c_uint16 * ARRAY_SIZE)()
# negative array size
with pytest.raises(IndexError):
decode(b' ', 0, addressof(dst_array), -1, sizeof(c_uint16))
# invalid word size
with pytest.raises(ValueError):
decode(b' ', 0, addressof(dst_array), ARRAY_SIZE, 3)
# read index negative
with pytest.raises(IndexError):
decode(b'', -1, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# Truncated end
with pytest.raises(ValueError):
decode(TRUNCATED_VALUE, 0, addressof(dst_array), ARRAY_SIZE,
sizeof(c_uint16))
# Too large positive value for this counter size
with pytest.raises(OverflowError):
decode(LARGE_POSITIVE_VALUE, 0, addressof(dst_array), ARRAY_SIZE,
sizeof(c_uint16))
# Negative overflow
with pytest.raises(OverflowError):
decode(LARGE_NEGATIVE_VALUE, 0, addressof(dst_array), ARRAY_SIZE,
sizeof(c_uint16))
# zero count skip index out of bounds
with pytest.raises(IndexError):
decode(INDEX_SKIPPER_VALUE, 0, addressof(dst_array), ARRAY_SIZE,
sizeof(c_uint16))
# read index too large => empty results
res = decode(b'BUMMER', 8, addressof(dst_array), ARRAY_SIZE,
sizeof(c_uint16))
assert res['total'] == 0
def test_zz_decode_errors():
with pytest.raises(TypeError):
decode(None, None, 0, 0)
dst_array = (c_uint16 * ARRAY_SIZE)()
# negative array size
with pytest.raises(IndexError):
decode(b' ', 0, addressof(dst_array), -1, sizeof(c_uint16))
# invalid word size
with pytest.raises(ValueError):
decode(b' ', 0, addressof(dst_array), ARRAY_SIZE, 3)
# read index negative
with pytest.raises(IndexError):
decode(b'', -1, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# Truncated end
with pytest.raises(ValueError):
decode(TRUNCATED_VALUE, 0, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# Too large positive value for this counter size
with pytest.raises(OverflowError):
decode(LARGE_POSITIVE_VALUE, 0, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# Negative overflow
with pytest.raises(OverflowError):
decode(LARGE_NEGATIVE_VALUE, 0, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# zero count skip index out of bounds
with pytest.raises(IndexError):
decode(INDEX_SKIPPER_VALUE, 0, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
# read index too large => empty results
res = decode(b'BUMMER', 8, addressof(dst_array), ARRAY_SIZE, sizeof(c_uint16))
assert(res['total'] == 0)