def test_encode_positive_integer_always_valid(self, integer, prefix_bits):
"""
So long as the prefix bits are between 1 and 8, any positive integer
can be represented.
"""
result = encode_integer(integer, prefix_bits)
assert isinstance(result, bytearray)
assert len(result) > 0
def test_encode_positive_integer_always_valid(self, integer, prefix_bits):
"""
So long as the prefix bits are between 1 and 8, any positive integer
can be represented.
"""
result = encode_integer(integer, prefix_bits)
assert isinstance(result, bytearray)
assert len(result) > 0
def test_encode_decode_round_trips(self, integer, prefix_bits):
"""
Given valid data, the encoder and decoder can round trip.
"""
encoded_result = encode_integer(integer, prefix_bits)
decoded_integer, consumed = decode_integer(bytes(encoded_result),
prefix_bits)
assert integer == decoded_integer
assert consumed > 0
def test_encode_decode_round_trips(self, integer, prefix_bits):
"""
Given valid data, the encoder and decoder can round trip.
"""
encoded_result = encode_integer(integer, prefix_bits)
decoded_integer, consumed = decode_integer(
bytes(encoded_result), prefix_bits
)
assert integer == decoded_integer
assert consumed > 0
def test_encoding_42_with_8_bit_prefix(self):
val = encode_integer(42, 8)
assert len(val) == 1
assert val == bytearray(b'\x2a')
def test_encoding_1337_with_5_bit_prefix(self):
val = encode_integer(1337, 5)
assert len(val) == 3
assert val == bytearray(b'\x1f\x9a\x0a')
def test_encoding_10_with_5_bit_prefix(self):
val = encode_integer(10, 5)
assert len(val) == 1
assert val == bytearray(b'\x0a')
def test_encode_fails_for_invalid_prefixes(self, integer, prefix_bits):
"""
If the prefix is out of the range [1,8], the encoder fails.
"""
with pytest.raises(ValueError):
encode_integer(integer, prefix_bits)
def test_encode_fails_for_negative_integers(self, integer, prefix_bits):
"""
If the integer to encode is negative, the encoder fails.
"""
with pytest.raises(ValueError):
encode_integer(integer, prefix_bits)
def test_encode_fails_for_invalid_prefixes(self, integer, prefix_bits):
"""
If the prefix is out of the range [1,8], the encoder fails.
"""
with pytest.raises(ValueError):
encode_integer(integer, prefix_bits)
def test_encode_fails_for_negative_integers(self, integer, prefix_bits):
"""
If the integer to encode is negative, the encoder fails.
"""
with pytest.raises(ValueError):
encode_integer(integer, prefix_bits)
def test_encoding_42_with_8_bit_prefix(self):
val = encode_integer(42, 8)
assert len(val) == 1
assert val == bytearray(b'\x2a')
def test_encoding_1337_with_5_bit_prefix(self):
val = encode_integer(1337, 5)
assert len(val) == 3
assert val == bytearray(b'\x1f\x9a\x0a')
def test_encoding_10_with_5_bit_prefix(self):
val = encode_integer(10, 5)
assert len(val) == 1
assert val == bytearray(b'\x0a')
def test_decode_large_integer_small_prefix(self, benchmark):
data = bytes(encode_integer(integer=120000, prefix_bits=1))
benchmark(decode_integer, data=data, prefix_bits=1)
def test_decode_large_integer_small_prefix(self, benchmark):
data = bytes(encode_integer(integer=120000, prefix_bits=1))
benchmark(decode_integer, data=data, prefix_bits=1)