1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
from dataclasses import dataclass, field
from datetime import date
from typing import Generic, List, Sequence, TypeVar
from mashumaro import DataClassDictMixin, field_options
from mashumaro.types import SerializationStrategy
T = TypeVar("T")
class TruncatedGenericListSerializationStrategy(
SerializationStrategy, Generic[T]
):
def serialize(self, value: List[T]) -> Sequence[T]:
return value[:-1]
def deserialize(self, value: Sequence[T]) -> Sequence[T]:
return value[:-1]
class TruncatedAnnotatedDateListSerializationStrategy(
SerializationStrategy, use_annotations=True
):
def serialize(self, value) -> Sequence[date]:
return value[:-1]
def deserialize(self, value: Sequence[date]):
return value[:-1]
class TruncatedDateListSerializationStrategy(SerializationStrategy):
def serialize(self, value) -> Sequence[date]:
return value[:-1]
def deserialize(self, value: Sequence[date]):
return value[:-1]
class TruncatedUnannotatedListSerializationStrategy(
SerializationStrategy, use_annotations=True
):
def serialize(self, value):
return value[:-1]
def deserialize(self, value):
return value[:-1]
def test_generic_list_serialization_strategy():
@dataclass
class MyDataClass(DataClassDictMixin):
x: List[int]
y: List[List[int]]
class Config:
serialization_strategy = {
list: TruncatedGenericListSerializationStrategy()
}
obj = MyDataClass([1, 2, 3, 4, 5], [[1, 2], [3, 4]])
assert obj.to_dict() == {"x": [1, 2, 3, 4], "y": [[1]]}
assert MyDataClass.from_dict(
{"x": ["1", "2", "3", "4"], "y": [[1, 2], [3, 4]]}
) == MyDataClass([1, 2, 3], [[1]])
def test_date_list_serialization_strategy_with_use_annotations():
@dataclass
class MyDataClass(DataClassDictMixin):
x: List[date]
class Config:
serialization_strategy = {
list: TruncatedAnnotatedDateListSerializationStrategy()
}
obj = MyDataClass(
[
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
)
assert obj.to_dict() == {
"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]
}
assert MyDataClass.from_dict(
{"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]}
) == MyDataClass([date(2023, 2, 12), date(2023, 2, 12), date(2023, 2, 12)])
def test_date_list_serialization_strategy_without_use_annotations():
@dataclass
class MyDataClass(DataClassDictMixin):
x: List[date]
class Config:
serialization_strategy = {
list: TruncatedDateListSerializationStrategy()
}
obj = MyDataClass(
[
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
)
assert obj.to_dict() == {
"x": [
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
}
assert MyDataClass.from_dict(
{"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]}
) == MyDataClass(["2023-02-12", "2023-02-12", "2023-02-12"])
def test_date_list_serialization_strategy_use_annotations_without_annotations():
@dataclass
class MyDataClass(DataClassDictMixin):
x: List[date]
class Config:
serialization_strategy = {
list: TruncatedUnannotatedListSerializationStrategy()
}
obj = MyDataClass(
[
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
)
assert obj.to_dict() == {
"x": [
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
}
assert MyDataClass.from_dict(
{"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]}
) == MyDataClass(["2023-02-12", "2023-02-12", "2023-02-12"])
def test_date_list_field_serialization_strategy_with_use_annotations():
@dataclass
class MyDataClass(DataClassDictMixin):
x: List[date] = field(
metadata=field_options(
serialization_strategy=(
TruncatedAnnotatedDateListSerializationStrategy()
)
)
)
obj = MyDataClass(
[
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
date(2023, 2, 12),
]
)
assert obj.to_dict() == {
"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]
}
assert MyDataClass.from_dict(
{"x": ["2023-02-12", "2023-02-12", "2023-02-12", "2023-02-12"]}
) == MyDataClass([date(2023, 2, 12), date(2023, 2, 12), date(2023, 2, 12)])
|
