pocketpy/tests/90_pickle.py
2025-10-08 21:09:14 +08:00

236 lines
4.7 KiB
Python

import pickle as pkl
def test(data): # type: ignore
print('-'*50)
b = pkl.dumps(data)
print(b)
o = pkl.loads(b)
print(o)
assert data == o
return o
test(None) # PKL_NONE
test(...) # PKL_ELLIPSIS
test(1) # PKL_INT8
test(277) # PKL_INT16
test(-66666) # PKL_INT32
test(0xffffffffffff) # PKL_INT64
test(1.0) # PKL_FLOAT32
test(1.12312434234) # PKL_FLOAT64
test(True) # PKL_TRUE
test(False) # PKL_FALSE
test("hello") # PKL_STRING
test(b"hello") # PKL_BYTES
from vmath import vec2, vec3, vec2i, vec3i
test(vec2(2/3, 1.0)) # PKL_VEC2
test(vec3(2/3, 1.0, 3.0)) # PKL_VEC3
test(vec2i(1, 2)) # PKL_VEC2I
test(vec3i(1, 2, 3)) # PKL_VEC3I
test(vec3i) # PKL_TYPE
print('-'*50)
from array2d import array2d
a = array2d[int | bool | vec2i].fromlist([
[1, 2, vec2i.LEFT],
[4, True, 6]
])
a_encoded = pkl.dumps(a)
print(a_encoded)
a_decoded = pkl.loads(a_encoded)
assert isinstance(a_decoded, array2d)
assert a_decoded.width == 3 and a_decoded.height == 2
assert (a == a_decoded).all()
print(a_decoded)
test([1, 2, 3]) # PKL_LIST
test((1, 2, 3)) # PKL_TUPLE
test({1: 2, 3: 4}) # PKL_DICT
# test complex data
test([1, '2', True])
test([1, '2', 3.0, True])
test([1, '2', True, {'key': 4}])
test([1, '2', 3.0, True, {'k1': 4, 'k2': [b'xxxx']}])
# test memo
a = [1, 2, 3, 4, 5, 6, 745]
b = [a] * 10
c = test(b)
assert b == c
assert b is not c
assert c[0] is c[1] and c[1] is c[2]
s1 = 'hello'
s2 = 'world'
a = [s1, s2] * 10
b = test(a)
assert b == a
assert b is not a
assert b[0] is b[2]
assert b[1] is b[3]
from pkpy import TValue
class Base(TValue[int]):
def __eq__(self, other):
return self.value == other.value
def __ne__(self, other):
return self.value != other.value
class TVal(Base): pass # type: ignore
test(TVal(1))
old_bytes = pkl.dumps(TVal(1))
print(old_bytes)
# re-define the class so it will have a new type id
class TVal(Base): pass
# see if we can still load the old data
decoded = pkl.loads(old_bytes)
assert decoded == TVal(1)
print(pkl.dumps(decoded))
# test array2d with TValue
a = array2d[TVal].fromlist([
[TVal(1), TVal(2)],
[TVal(3), 1]])
test(a)
# test __reduce__
class A:
def __init__(self, seed):
self.seed = seed
self.x = seed
self.y = seed + 1
self.z = seed + 2
def __eq__(self, other):
return (self.x, self.y, self.z) == (other.x, other.y, other.z)
def __ne__(self, other):
return (self.x, self.y, self.z) != (other.x, other.y, other.z)
def __repr__(self):
return f"A({self.seed}, x={self.x}, y={self.y}, z={self.z})"
def __reduce__(self):
print('__reduce__() called')
return A, (self.seed,)
test([A(1)]*10)
class Simple:
def __init__(self, x):
self.field1 = x
self.field2 = [...]
def __eq__(self, other): return self.field1 == other.field1
def __ne__(self, other): return self.field1 != other.field1
test(Simple(1))
test([Simple(2)]*10)
from dataclasses import dataclass
@dataclass
class Data:
a: int
b: str = '2'
c: float = 3.0
test(Data(1))
exit()
from pickle import dumps, loads, _wrap, _unwrap
def test(x):
y = dumps(x)
# print(y.decode())
ok = x == loads(y)
if not ok:
_0 = _wrap(x)
_1 = _unwrap(_0)
print('='*50)
print(_0)
print('-'*50)
print(_1)
print('='*50)
assert False
test(1)
test(1.0)
test("hello")
test(True)
test(False)
test(None)
test([1, 2, 3])
test((1, 2, 3))
test({1: 2, 3: 4})
class Foo:
def __init__(self, x, y):
self.x = x
self.y = y
def __eq__(self, __value: object) -> bool:
if not isinstance(__value, Foo):
return False
return self.x == __value.x and self.y == __value.y
def __repr__(self) -> str:
return f"Foo({self.x}, {self.y})"
test(Foo(1, 2))
test(Foo([1, True], 'c'))
from vmath import vec2
test(vec2(1, 2))
a = {1, 2, 3, 4}
test(a)
a = bytes([1, 2, 3, 4])
test(a)
a = [1, 2]
d = {'k': a, 'j': a}
c = loads(dumps(d))
assert c['k'] is c['j']
assert c == d
# test circular references
from collections import deque
a = deque([1, 2, 3])
test(a)
a = [int, float, Foo]
test(a)
# test function
def f(x, y):
return x + y
test(f)
# test @staticmethod
class B:
@staticmethod
def f(x, y):
return x * y
@classmethod
def g(cls):
return cls
class C(B):
pass
test(B.f)
test(C.f)
test(B.g)
test(C.g)