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from unittestmock import UnitTestMock
from cykhash.utils import float64_hash, float32_hash, int64_hash, int32_hash, object_hash, objects_are_equal
from cykhash.compat import assert_if_not_on_PYPY, assert_equal_32_or_64
class TestUtils(UnitTestMock):
def test_hash_float64_neg_zero(self):
self.assertEqual(float64_hash(0.0), float64_hash(-0.0))
def test_hash_float32_neg_zero(self):
self.assertEqual(float32_hash(0.0), float32_hash(-0.0))
def test_hash_float64_one(self):
assert_equal_32_or_64(
val=float64_hash(1.0),
expected32=741795711,
expected64=1954243739,
reason="different murmur implementations"
)
def test_hash_float32_one(self):
self.assertEqual(float32_hash(1.0), 1648074928)
def test_hash_int64_zero(self):
assert_equal_32_or_64(
val=int64_hash(0),
expected32=224447722,
expected64=4178429809,
reason="different murmur implementations"
)
def test_hash_int32_zero(self):
self.assertEqual(int32_hash(0), 649440278)
def test_hash_int64_one(self):
assert_equal_32_or_64(
val=int64_hash(1),
expected32=190876766,
expected64=1574219535,
reason="different murmur implementations"
)
def test_hash_int32_one(self):
self.assertEqual(int32_hash(1), 1753268367)
def test_hash_object_zero(self):
self.assertEqual(object_hash(0), 0)
def test_hash_object_one(self):
assert_equal_32_or_64(
val=object_hash(1),
expected32=1,
expected64=2049,
reason="no additional hashing for 32bit and pyobjects"
)
def test_equal_tupples_with_nan(self):
t1 = (1, (float("nan"), 2), (4, (float("nan"),)))
t2 = (1, (float("nan"), 2), (4, (float("nan"),)))
assert_if_not_on_PYPY(t1 != t2, "nan is a singleton on PyPy")
assert objects_are_equal(t1, t2)
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