def test_hash_id():
"""Test that hash_id returns a 12-byte hexadecimal string
and that it returns the expected hash value
"""
value = hash_id("aHashId")
assert PATTERN_12_BYTE_HASH.match(value)
assert value == "1351b4add8fae29a10ec26ba"
def hash(self, value):
"""Returns a 12-byte hash of a given string lowercased, unless it is already a
12-byte hexadecimal string (e.g. as returned by the unique_id function).
Returns zero bytes if the value is None or falsey
Override where desired behavior differs"""
if isinstance(value, str):
value = value.lower()
return hash_id(value)
def test_hash_no_rehash():
"""Test that the hash function won't rehash a 12-byte hex string
"""
assert hash_id("3a392b49adf4b306976fb0d0") == "3a392b49adf4b306976fb0d0"
value = unique_id()
assert hash_id(value) == value
def test_hash_zero():
"""Test that no value returns 12-byte of zeros hexadecimal string
"""
assert hash_id(None) == "000000000000000000000000"
assert hash_id("") == "000000000000000000000000"
def test_hash_id_case_insensitive():
"""Test that hash_id returns a 12-byte hexadecimal string
and that it returns the expected hash value
"""
assert hash_id("aHashId") == hash_id("ahashid")
def hash(self, value):
"""Returns a 12-byte hash of a given string, unless it is already a
12-byte hexadecimal string (e.g. as returned by the unique_id function).
Returns zero bytes if the value is None or falsey"""
return hash_id(value)
