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_decode_either_succeeds_or_raises_error(self, data, prefix_bits):
"""
Attempting to decode data either returns a positive integer or throws a
HPACKDecodingError.
"""
try:
result, consumed = decode_integer(data, prefix_bits)
except HPACKDecodingError:
pass
else:
assert isinstance(result, int)
assert result >= 0
assert consumed > 0
def test_decode_either_succeeds_or_raises_error(self, data, prefix_bits):
"""
Attempting to decode data either returns a positive integer or throws a
HPACKDecodingError.
"""
try:
result, consumed = decode_integer(data, prefix_bits)
except HPACKDecodingError:
pass
else:
assert isinstance(result, int)
assert result >= 0
assert consumed > 0
def test_decode_insufficient_data_fails(self):
with pytest.raises(HPACKDecodingError):
decode_integer(b'\x1f', 5)
def test_decode_empty_string_fails(self):
with pytest.raises(HPACKDecodingError):
decode_integer(b'', 8)
def test_encoding_42_with_8_bit_prefix(self):
val = decode_integer(b'\x2a', 8)
assert val == (42, 1)
def test_encoding_1337_with_5_bit_prefix(self):
val = decode_integer(b'\x1f\x9a\x0a', 5)
assert val == (1337, 3)
def test_decoding_10_with_5_bit_prefix(self):
val = decode_integer(b'\x0a', 5)
assert val == (10, 1)
def test_decode_fails_for_invalid_prefixes(self, prefix_bits):
"""
If the prefix is out of the range [1,8], the encoder fails.
"""
with pytest.raises(ValueError):
decode_integer(b'\x00', prefix_bits)
def test_decode_fails_for_invalid_prefixes(self, prefix_bits):
"""
If the prefix is out of the range [1,8], the encoder fails.
"""
with pytest.raises(ValueError):
decode_integer(b'\x00', prefix_bits)
def test_decode_insufficient_data_fails(self):
with pytest.raises(HPACKDecodingError):
decode_integer(b'\x1f', 5)
def test_decode_empty_string_fails(self):
with pytest.raises(HPACKDecodingError):
decode_integer(b'', 8)
def test_encoding_42_with_8_bit_prefix(self):
val = decode_integer(b'\x2a', 8)
assert val == (42, 1)
def test_encoding_1337_with_5_bit_prefix(self):
val = decode_integer(b'\x1f\x9a\x0a', 5)
assert val == (1337, 3)
def test_decoding_10_with_5_bit_prefix(self):
val = decode_integer(b'\x0a', 5)
assert val == (10, 1)
