def _hll_merge(v: pd.DataFrame) -> bytes:
hll_res = HyperLogLog(k)
hll = HyperLogLog(k)
for x in v:
hll.set_registers(bytearray(x))
hll_res.merge(hll)
return hll_res.registers()
def _hll_merge(v):
hll_res = HyperLogLog(k)
hll = HyperLogLog(k)
for x in v:
hll.set_registers(bytearray(x))
hll_res.merge(hll)
return hll_res.registers()
class TestRegisterFunctions(unittest.TestCase):
def setUp(self):
self.k = 5
self.hll = HyperLogLog(5)
def test_set_last_register(self):
self.hll.set_register(self.k - 1, 1)
self.assertTrue(self.hll.registers()[self.k - 1] == 1)
def test_set_first_register(self):
self.hll.set_register(0, 1)
self.assertTrue(self.hll.registers()[0] == 1)
def test_set_register_with_negative_value_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, -1)
def test_set_register_with_greater_than_max_rank_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, 33)
def test_set_register_with_index_out_of_bounds(self):
with self.assertRaises(IndexError):
self.hll.set_register(32, 1)
def test_set_register_with_negative_index_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, -1)
def test_bytesarray_has_correct_values(self):
expected = bytearray(32)
for i in range(31):
expected[i] = randint(0, 16)
for i in range(31):
self.hll.set_register(i, expected[i])
registers = self.hll.registers()
for i in range(31):
self.assertEqual(expected[i], registers[i])
def test_registers_returns_bytesarray(self):
self.assertTrue(type(self.hll.registers()) is bytearray)
def test_bytesarray_has_correct_length(self):
self.assertTrue(len(self.hll.registers()) == pow(2, self.k))
def _hll_init(v):
hll = HyperLogLog(k)
zero = hll.registers()
def regs(x):
hll.set_registers(zero);
if x is not None:
hll.add(str(x));
return hll.registers()
return v.apply(lambda x: regs(x))
def _hll_init_agg(v: pd.DataFrame) -> bytes:
hll_res = HyperLogLog(k)
hll = HyperLogLog(k)
for x in v:
if isinstance(x, (bytes, bytearray)):
hll.set_registers(bytearray(x))
hll_res.merge(hll)
elif x is not None:
hll_res.add(str(x))
return hll_res.registers()
def test_merge(self):
expected = bytearray(4)
expected[0] = 1
expected[3] = 1
hll = HyperLogLog(2)
hll2 = HyperLogLog(2)
hll.set_register(0, 1)
hll2.set_register(3, 1)
hll.merge(hll2)
self.assertEqual(hll.registers(), expected)
def test_merge(self):
expected = bytearray(4)
expected[0] = 1
expected[3] = 1
hll = HyperLogLog(2)
hll2 = HyperLogLog(2)
hll.set_register(0, 1)
hll2.set_register(3, 1)
hll.merge(hll2)
self.assertEqual(hll.registers(), expected)
class TestRegisterFunctions(unittest.TestCase):
def setUp(self):
self.k = 5
self.hll = HyperLogLog(5)
def test_set_last_register(self):
self.hll.set_register(self.k - 1, 1)
self.assertTrue(self.hll.registers()[self.k - 1] == 1)
def test_set_first_register(self):
self.hll.set_register(0, 1)
self.assertTrue(self.hll.registers()[0] == 1)
def test_set_register_with_negative_value_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, -1)
def test_set_register_with_greater_than_max_rank_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, 33)
def test_set_register_with_index_out_of_bounds(self):
with self.assertRaises(IndexError):
self.hll.set_register(32, 1)
def test_set_register_with_negative_index_fails(self):
with self.assertRaises(ValueError):
self.hll.set_register(0, -1)
def test_bytesarray_has_correct_values(self):
expected = bytearray(randint(0, 16) for x in range(32))
for i in range(32):
self.hll.set_register(i, expected[i])
registers = self.hll.registers()
self.assertEqual(expected, registers)
def test_registers_returns_bytesarray(self):
self.assertTrue(type(self.hll.registers()) is bytearray)
def test_bytesarray_has_correct_length(self):
self.assertTrue(len(self.hll.registers()) == pow(2, self.k))
def test_set_registers(self):
expected = bytearray(randint(0, 16) for x in range(32))
self.hll.set_registers(expected)
registers = self.hll.registers()
self.assertEqual(expected, registers)
def test_k_param_determines_the_number_of_registers(self):
hll = HyperLogLog(5)
self.assertEqual(len(hll.registers()), 32)
self.assertEqual(hll.size(), 32)
def test_all_registers_initialized_to_zero(self):
hll = HyperLogLog(5)
registers = hll.registers()
for register in registers:
self.assertEqual(register, 0)
def test_k_param_determines_the_number_of_registers(self):
hll = HyperLogLog(5)
self.assertEqual(len(hll.registers()), 32)
self.assertEqual(hll.size(), 32)
def test_all_registers_initialized_to_zero(self):
hll = HyperLogLog(5)
registers = hll.registers()
for register in registers:
self.assertEqual(register, 0)
