| import sys |
| import unittest |
| from test.support import import_helper |
| _testcapi = import_helper.import_module('_testcapi') |
| |
| |
| SIZEOF_PY_HASH_T = _testcapi.SIZEOF_VOID_P |
| |
| |
| class CAPITest(unittest.TestCase): |
| def test_hash_getfuncdef(self): |
| # Test PyHash_GetFuncDef() |
| hash_getfuncdef = _testcapi.hash_getfuncdef |
| func_def = hash_getfuncdef() |
| |
| match func_def.name: |
| case "fnv": |
| self.assertEqual(func_def.hash_bits, 8 * SIZEOF_PY_HASH_T) |
| self.assertEqual(func_def.seed_bits, 16 * SIZEOF_PY_HASH_T) |
| case "siphash13": |
| self.assertEqual(func_def.hash_bits, 64) |
| self.assertEqual(func_def.seed_bits, 128) |
| case "siphash24": |
| self.assertEqual(func_def.hash_bits, 64) |
| self.assertEqual(func_def.seed_bits, 128) |
| case _: |
| self.fail(f"unknown function name: {func_def.name!r}") |
| |
| # compare with sys.hash_info |
| hash_info = sys.hash_info |
| self.assertEqual(func_def.name, hash_info.algorithm) |
| self.assertEqual(func_def.hash_bits, hash_info.hash_bits) |
| self.assertEqual(func_def.seed_bits, hash_info.seed_bits) |
