| 1 | from __future__ import annotations
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| 2 | from abc import ABC
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| 3 | from datetime import datetime
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| 4 | from decimal import Decimal
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| 5 | import json
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| 6 | import re
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| 7 | import sys, traceback
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| 8 | from typing import Dict, List, Set, Any, Union, Optional, Collection
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| 9 | import unittest
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| 10 | from uuid import uuid4, UUID
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| 11 |
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| 12 | from pyson.Deserializer import Deserializer
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| 13 | from pyson.Serializer import Serializer
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| 14 | from pyson.JsonSerialize import JsonSerialize
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| 15 | from pyson.JsonDeserialize import JsonDeserialize
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| 16 | from pyson.JsonGetter import JsonGetter
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| 17 | from pyson.JsonSubTypes import JsonSubTypes
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| 18 | from pyson.JsonTypeInfo import Id, As
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| 19 | from pyson.JsonTypeInfo import JsonTypeInfo
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| 20 | from pyson.JsonValue import JsonValue
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| 21 | from pyson.ObjectMapper import ObjectMapper
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| 22 | from pickle import NONE
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| 23 | from test.MyDeserializer import ValueDeserializer2
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| 24 | from cgitb import reset
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| 25 |
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| 26 | class SuperSimple:
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| 27 | def __init__(self, a:Optional[int]):
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| 28 | self.a=a
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| 29 | def __eq__(self, other):
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| 30 | return isinstance(other, self.__class__) and \
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| 31 | self.a==other.a
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| 32 | def getA(self):
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| 33 | return self.a
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| 34 | def __repr__(self):
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| 35 | return "SuperSimple::"+str(self.a)
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| 36 | def __hash__(self):
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| 37 | return hash(self.a)
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| 38 |
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| 39 |
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| 40 |
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| 41 | # deserializer DROPS FIRST CHAR from string and assumes rest is an int.
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| 42 | # Then returns Simple(int)
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| 43 | class ValueDeserializer(Deserializer):
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| 44 | def __hash__(self):
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| 45 | return hash(self.geta())
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| 46 | def deserialize(self, data:object, clas: object)-> object:
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| 47 | if type(data)!=str:
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| 48 | raise ValueError("Expected str starting with '$', got "+str(data))
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| 49 | return Simple(int(data[1:]))
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| 50 |
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| 51 | # serializes Simple object, just prefixing its value (as string) with "$"
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| 52 | class ValueSerializer(Serializer):
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| 53 | def serialize(self, obj:object)-> object:
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| 54 | if not isinstance(obj, Simple):
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| 55 | raise ValueError("Expected Dimple object")
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| 56 | return "$" + str(obj.geta())
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| 57 |
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| 58 | class Basic:
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| 59 | def __init__(self, v:float):
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| 60 | self._v=v
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| 61 | def __eq__(self, other):
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| 62 | return isinstance(other, self.__class__) and \
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| 63 | self._v==other._v
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| 64 | def getV(self):
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| 65 | return self._v
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| 66 | def __repr__(self):
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| 67 | return "Basic:"+str(self._v)
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| 68 | def __hash__(self):
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| 69 | return hash(self._v)
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| 70 |
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| 71 | @JsonDeserialize(ValueDeserializer)
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| 72 | @JsonSerialize(ValueSerializer)
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| 73 | class Simple:
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| 74 | def __init__(self, a:int):
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| 75 | self._a=a
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| 76 | def geta(self)->int:
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| 77 | return self._a
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| 78 | def __eq__(self, other):
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| 79 | return isinstance(other, self.__class__) and \
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| 80 | self._a==other._a
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| 81 | def __repr__(self):
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| 82 | return "Simple:"+str(self._a)
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| 83 | def __hash__(self):
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| 84 | return hash(self._a)
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| 85 |
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| 86 |
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| 87 |
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| 88 | @JsonDeserialize(ValueDeserializer2)
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| 89 | class Simple2:
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| 90 | def __init__(self, a:int):
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| 91 | self._a=a
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| 92 | def geta(self)->int:
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| 93 | return self._a
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| 94 | def __eq__(self, other):
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| 95 | return isinstance(other, self.__class__) and \
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| 96 | self._a==other._a
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| 97 | def __repr__(self):
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| 98 | return self._name+","+str(self._a)
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| 99 |
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| 100 | #None cancels out the existing deserializer.
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| 101 | # parsing with str should now fail.
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| 102 | @JsonDeserialize(None)
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| 103 | class Simple3 (Simple):
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| 104 | pass
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| 105 |
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| 106 |
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| 107 | class MyList:
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| 108 | def __init__(self, data: List[Simple] ):
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| 109 | self.data=data
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| 110 | def getData(self)->List[Simple]:
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| 111 | return self.data
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| 112 |
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| 113 | class BasicDict:
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| 114 | def __init__(self, data: Dict[Basic,Basic] ):
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| 115 | self.data=data
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| 116 | def getData(self)->Dict[Basic,Basic]:
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| 117 | return self.data
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| 118 | def __repr__(self):
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| 119 | return "BasicDict:"+str(self.data)
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| 120 | def __eq__(self, other):
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| 121 | return isinstance(other, self.__class__) and \
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| 122 | self.data==other.data
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| 123 |
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| 124 |
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| 125 | class SimpleDict:
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| 126 | def __init__(self, data: Dict[Simple,Simple] ):
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| 127 | self.data=data
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| 128 | def getData(self)->Dict[Simple,Simple]:
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| 129 | return self.data
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| 130 | def __eq__(self, other):
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| 131 | return isinstance(other, self.__class__) and \
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| 132 | self.data==other.data
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| 133 | def __repr__(self):
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| 134 | return "SimpleDict:"+str(self.data)
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| 135 |
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| 136 |
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| 137 | class MyOptionalString:
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| 138 | def __init__(self, s:Optional[str]):
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| 139 | self.data:Optional[str] = s
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| 140 | def getData(self)->Optional[str]:
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| 141 | return self.data
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| 142 | def __eq__(self, other):
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| 143 | return isinstance(other, self.__class__) and \
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| 144 | self.data==other.data
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| 145 | def __repr__(self):
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| 146 | return "MyOptionalString:"+str(self.data)
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| 147 |
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| 148 |
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| 149 | @JsonSubTypes(['test.DeserializerTest.A','test.DeserializerTest.B','test.DeserializerTest.C'])
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| 150 | @JsonTypeInfo(use=Id.NAME, include=As.WRAPPER_OBJECT)
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| 151 | class Root:
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| 152 | def __init__(self, data: int ):
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| 153 | self.data:int=data
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| 154 | def getData(self)->int:
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| 155 | return self.data
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| 156 | def __eq__(self, other):
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| 157 | return isinstance(other, self.__class__) and \
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| 158 | self.data==other.data
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| 159 | def __repr__(self):
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| 160 | return type(self).__name__ + "/" + str(self.data)
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| 161 | def __hash__(self):
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| 162 | return 0
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| 163 |
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| 164 |
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| 165 | class A(Root):
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| 166 | pass
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| 167 |
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| 168 | class B(Root):
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| 169 | pass
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| 170 |
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| 171 | class C(Root):
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| 172 | def __init__(self, data:int, name: str):
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| 173 | super().__init__(data)
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| 174 | self.name = name
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| 175 | def __eq__(self, other):
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| 176 | return isinstance(other, self.__class__) and \
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| 177 | self.data==other.data and self.name==other.name
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| 178 | def __repr__(self):
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| 179 | return super().__repr__()+","+self.name
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| 180 |
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| 181 |
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| 182 |
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| 183 |
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| 184 | class BaseValueDeserializer (Deserializer):
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| 185 | def deserialize(self, data:object, clas: object) -> 'BaseValue':
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| 186 | if isinstance(data,str):
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| 187 | return BaseDiscreteValue(data)
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| 188 | raise ValueError("Expected number or double quoted string but found " + str(data)
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| 189 | + " of type " + str(type(data)))
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| 190 |
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| 191 | @JsonDeserialize(using=BaseValueDeserializer)
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| 192 | class BaseValue(ABC):
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| 193 | def __init__(self, value):
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| 194 | self._value = value;
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| 195 |
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| 196 | @JsonValue()
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| 197 | def getValue(self) -> str:
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| 198 | return self._value;
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| 199 |
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| 200 | #disable parent deserializer. This is essential #331
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| 201 | #@JsonDeserialize(using=None)
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| 202 | class BaseDiscreteValue(BaseValue):
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| 203 | def __init__(self, value:str):
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| 204 | self.__value=value
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| 205 | @JsonValue()
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| 206 | def getValue(self)->str:
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| 207 | return self.__value
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| 208 |
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| 209 |
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| 210 | class DeserializerTest(unittest.TestCase):
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| 211 | '''
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| 212 | Test a lot of back-and-forth cases.
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| 213 | FIXME Can we make this a parameterized test?
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| 214 | '''
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| 215 | pyson=ObjectMapper()
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| 216 | mixedList:List[Root] = [A(1), B(1)]
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| 217 | mixedlistjson:List = [{'A': {'data': 1}}, {'B': {'data': 1}}]
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| 218 |
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| 219 | mixedDict:Dict[Root,int] = {A(1):1, B(1):2}
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| 220 | mixedDictJson:dict = {'{"A": {"data": 1}}': 1, '{"B": {"data": 1}}': 2}
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| 221 | MyC:C = C(3, "MyC")
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| 222 |
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| 223 | def testDeserialize(self):
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| 224 | objson= "$12"
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| 225 | self.assertEqual(Simple(12), self.pyson.parse(objson, Simple))
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| 226 |
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| 227 | def testExternalDeserialize2(self):
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| 228 | objson= "$13"
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| 229 | self.assertEqual(13, self.pyson.parse(objson, Simple2))
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| 230 |
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| 231 |
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| 232 | def testExternalDeserialize3(self):
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| 233 | objson= "$13"
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| 234 | self.assertRaises(ValueError, lambda:self.pyson.parse(objson, Simple3))
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| 235 |
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| 236 | def testDeserializeMyList(self):
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| 237 | print(self.pyson.toJson(MyList([12,13])))
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| 238 |
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| 239 | # the json we provide is NOT the proper json but a STRING.
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| 240 | # This triggers a fallback mechanism that tries to parse the string as json.
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| 241 | objson={"data": ["$12", "$13"]}
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| 242 | res = self.pyson.parse(objson, MyList)
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| 243 | print(res)
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| 244 | self.assertEqual([Simple(12),Simple(13)], res.data)
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| 245 |
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| 246 | def testDeserializeCollection(self):
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| 247 | objson=[1,2,3]
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| 248 | # this checks that pyson can parse a list as Collection.
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| 249 | # The result is a simple list like in java/jackson.
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| 250 | # Collection without typing info means Collectino[Any]
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| 251 | res = self.pyson.parse(objson, Collection)
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| 252 | print(res)
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| 253 | self.assertEqual([1,2,3], res)
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| 254 |
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| 255 |
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| 256 | def testSerializeBasicDict(self):
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| 257 | '''
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| 258 | Basic object keys. Special (de)serializer should kick in #190
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| 259 | '''
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| 260 | d= BasicDict( { Basic(1.):Basic(2.), Basic(3.): Basic(4.) } )
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| 261 | objson={"data": {"{\"v\": 1.0}": {"v": 2.0}, "{\"v\": 3.0}": {"v": 4.0}}}
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| 262 | dump=json.dumps(self.pyson.toJson(d));
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| 263 | print(dump)
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| 264 | # self.assertEqual(objson, dump);
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| 265 | res=self.pyson.parse(objson, BasicDict)
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| 266 | print("res="+str(res))
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| 267 | self.assertEqual(d, res)
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| 268 |
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| 269 |
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| 270 | def testSerializeSimpleDictCustomSerializer(self):
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| 271 | d= SimpleDict( { Simple(1):Simple(2), Simple(3): Simple(4) } )
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| 272 |
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| 273 | # The keys need extra quotes, they are deserialied by
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| 274 | # our special deserializer that parses the string as json,
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| 275 | # and json requires double quotes around its strings.
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| 276 | objson = {"data": {'"$1"': "$2", '"$3"': "$4"}}
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| 277 |
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| 278 | obj=self.pyson.toJson(d)
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| 279 | print(json.dumps(obj))
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| 280 | self.assertEqual(objson, obj)
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| 281 |
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| 282 | res = self.pyson.parse(objson, SimpleDict)
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| 283 | print("res="+str(res))
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| 284 | self.assertEqual(d, res)
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| 285 |
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| 286 | def testDeserializeOptString(self):
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| 287 | objson:dict={'s':None}
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| 288 | res = self.pyson.parse(objson, MyOptionalString)
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| 289 | print(res)
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| 290 | self.assertEqual(MyOptionalString(None), res)
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| 291 |
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| 292 | objson={'s':"something"}
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| 293 | res = self.pyson.parse(objson, MyOptionalString)
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| 294 | print(res)
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| 295 | self.assertEqual(MyOptionalString("something"), res)
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| 296 |
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| 297 | def testSerializeMixedList(self):
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| 298 | # see #296
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| 299 | res=self.pyson.toJson(self.mixedList)
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| 300 | print(res)
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| 301 | self.assertEqual(self.mixedlistjson, res)
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| 302 |
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| 303 | def testDeserializeMixedList(self):
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| 304 | # see #296
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| 305 | res=self.pyson.parse(self.mixedlistjson, List[Root])
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| 306 | print(res)
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| 307 | self.assertEqual(self.mixedList,res)
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| 308 |
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| 309 | def testDeserializeBadList(self):
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| 310 | # see #298. This SHOULD fail because B is not subtype of A
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| 311 | self.assertRaises(ValueError, lambda:self.pyson.parse(self.mixedlistjson, List[A]))
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| 312 |
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| 313 |
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| 314 | def testSerializeMixedDict(self):
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| 315 | # see #296
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| 316 | res=self.pyson.toJson(self.mixedDict)
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| 317 | print(res)
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| 318 | self.assertEqual(self.mixedDictJson, res)
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| 319 |
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| 320 | def testDeserializeMixedDict(self):
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| 321 | # see #296
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| 322 | print("testDeserializeMixedDict")
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| 323 | res=self.pyson.parse(self.mixedDictJson, Dict[Root,int])
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| 324 | print(res)
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| 325 | self.assertEqual(self.mixedDict,res)
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| 326 |
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| 327 | def testDeserializeC(self):
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| 328 | # see #298. Sub-class should not expect
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| 329 | res=self.pyson.parse({'C':{'data':3, 'name':'MyC' }}, Root)
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| 330 | print(reset)
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| 331 | self.assertEqual(self.MyC, res)
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| 332 | # even if you serialize as C, you still need the 'C' wrapper
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| 333 | res=self.pyson.parse({'C':{'data':3, 'name':'MyC' }}, C)
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| 334 | self.assertEqual(self.MyC, res)
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| 335 |
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| 336 | def testDeserializeBaseValue(self):
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| 337 | # see #331
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| 338 | res=self.pyson.parse({'yes': 1, 'no': 0}, Dict[BaseDiscreteValue, int])
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| 339 | print(res)
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| 340 |
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| 341 |
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| 342 | def testDeserializeSuperSimple(self):
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| 343 | res=self.pyson.parse({'a':1 } , SuperSimple)
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| 344 | print(res)
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| 345 | self.assertEqual(SuperSimple(1), res)
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| 346 |
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| 347 |
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| 348 | def testDeserializeMissingValue(self):
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| 349 | res=self.pyson.parse({ } , SuperSimple) # missing value for a
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| 350 | print(res)
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| 351 | self.assertEqual(SuperSimple(None), res)
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| 352 |
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| 353 | def testDeserializeStandardDict(self):
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| 354 | val:Dict = self.pyson.parse(json.loads("{\"a\":0.3,\"b\":{\"x\":3},\"c\":[1,2,3]}"),Dict)
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| 355 |
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| 356 |
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| 357 |
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| 358 |
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| 359 |
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| 360 |
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| 361 |
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| 362 |
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