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import json
from enum import Enum, IntFlag, auto
from typing import Dict, List
import pytest
from dataclasses import dataclass, field
from dataclasses_json import dataclass_json
from marshmallow.exceptions import ValidationError
class MyEnum(Enum):
STR1 = "str1"
STR2 = "str2"
STR3 = "str3"
INT1 = 1
FLOAT1 = 1.23
class MyStrEnum(str, Enum):
STR1 = "str1"
class MyFlag(IntFlag):
A = auto()
B = auto()
C = auto()
@dataclass_json
@dataclass(frozen=True)
class DataWithEnum:
name: str
my_enum: MyEnum = MyEnum.STR3
enum_list: List[MyEnum] = field(default_factory=list)
nested: Dict[str, List[MyEnum]] = field(default_factory=dict)
d1 = DataWithEnum('name1', MyEnum.STR1)
d1_json = '{"name": "name1", "my_enum": "str1", "enum_list": [], "nested": {}}'
# Make sure the enum is set to the default value defined by MyEnum
d2_using_default_value = DataWithEnum('name2')
d2_json = '{"name": "name2", "my_enum": "str3", "enum_list": [], "nested": {}}'
d3_int = DataWithEnum('name1', MyEnum.INT1)
d3_int_json = '{"name": "name1", "my_enum": 1, "enum_list": [], "nested": {}}'
d4_float = DataWithEnum('name1', MyEnum.FLOAT1)
d4_float_json = '{"name": "name1", "my_enum": 1.23, "enum_list": [], "nested": {}}'
d5_list = DataWithEnum('name1', MyEnum.STR1, [MyEnum.STR2, MyEnum.STR3], nested={'enum_val': [MyEnum.STR1]})
d5_list_json = '{"name": "name1", "my_enum": "str1", "enum_list": ["str2", "str3"], "nested": {"enum_val": ["str1"]}}'
@dataclass_json
@dataclass(frozen=True)
class DataWithStrEnum:
my_str_enum: MyStrEnum = MyEnum.STR1
ds = DataWithStrEnum(MyStrEnum.STR1)
ds_json = '{"my_str_enum": "str1"}'
@dataclass_json
@dataclass(frozen=True)
class EnumContainer:
enum_list: List[MyEnum]
dict_enum_value: Dict[str, MyEnum]
container_json = '{"enum_list": ["str3", 1], "dict_enum_value": {"key1str": "str1", "key1float": 1.23}}'
container = EnumContainer(
enum_list=[MyEnum.STR3, MyEnum.INT1],
dict_enum_value={"key1str": MyEnum.STR1, "key1float": MyEnum.FLOAT1})
@dataclass_json
@dataclass(frozen=True)
class FlagContainer:
flag_list: List[MyFlag]
flag: MyFlag
flag_container_json = '{"flag_list": [1, 4], "flag": 1}'
flag_container = FlagContainer(
flag_list=[MyFlag.A, MyFlag.C],
flag=MyFlag.A
)
class TestEncoder:
def test_data_with_enum(self):
assert d1.to_json() == d1_json, f'Actual: {d1.to_json()}, Expected: {d1_json}'
assert d3_int.to_json() == d3_int_json, f'Actual: {d3_int.to_json()}, Expected: {d3_int_json}'
assert d4_float.to_json() == d4_float_json, f'Actual: {d4_float.to_json()}, Expected: {d4_float_json}'
def test_data_with_str_enum(self):
assert ds.to_json() == ds_json, f'Actual: {ds.to_json()}, Expected: {ds_json}'
def test_data_with_enum_default_value(self):
d2_to_json = d2_using_default_value.to_json()
assert d2_to_json == d2_json, f"A default value was not included in the JSON encode. " \
f"Expected: {d2_json}, Actual: {d2_to_json}"
def test_collection_with_enum(self):
assert container.to_json() == container_json
def test_enum_with_list(self):
assert d5_list.to_json() == d5_list_json, f'Actual: {d5_list.to_json()}, Expected: {d5_list_json}'
assert d5_list.to_dict(encode_json=True) == json.loads(d5_list_json), f'Actual: {d5_list.to_dict()}, Expected: {json.loads(d5_list_json)}'
def test_enum_flag(self):
assert flag_container.to_json() == flag_container_json, f'Actual: {flag_container.to_json()}, Expected: {flag_container_json}'
assert flag_container.to_dict(encode_json=True) == json.loads(flag_container_json), f'Actual: {flag_container.to_dict()}, Expected: {json.loads(flag_container_json)}'
class TestDecoder:
def test_data_with_enum(self):
d1_from_json = DataWithEnum.from_json(d1_json)
assert d1 == d1_from_json
assert d1_from_json.to_json() == d1_json
d3_int_from_json = DataWithEnum.from_json(d3_int_json)
assert d3_int == d3_int_from_json
assert d3_int_from_json.to_json() == d3_int_json
d4_float_from_json = DataWithEnum.from_json(d4_float_json)
assert d4_float == d4_float_from_json
assert d4_float_from_json.to_json() == d4_float_json
def test_data_with_str_enum(self):
ds_from_json = DataWithStrEnum.from_json(ds_json)
assert ds == ds_from_json
assert ds_from_json.to_json() == ds_json
def test_data_with_enum_default_value(self):
d2_from_json = DataWithEnum.from_json(d2_json)
assert d2_using_default_value == d2_from_json
json_from_d2 = d2_from_json.to_json()
assert json_from_d2 == d2_json, f"A default value was not included in the JSON encode. " \
f"Expected: {d2_json}, Actual: {json_from_d2}"
def test_collection_with_enum(self):
container_from_json = EnumContainer.from_json(container_json)
assert container == container_from_json
assert container_from_json.to_json() == container_json
def test_enum_flag(self):
flag_container_from_json = FlagContainer.from_json(flag_container_json)
assert flag_container == flag_container_from_json
assert flag_container_from_json.to_json() == flag_container_json
class TestValidator:
@pytest.mark.parametrize('enum_value, is_valid', [
('str1', True),
('str2', True),
('str3', True),
(1, False),
(1.23, False),
('str4', False),
(2, False),
(1.24, False),
])
def test_data_with_enum(self, enum_value, is_valid):
data = '{"name": "myname", "my_enum": "' + str(enum_value) + '"}'
schema = DataWithEnum.schema()
res = schema.validate(json.loads(data))
no_errors = not res
assert no_errors == is_valid, str(res)
@pytest.mark.parametrize('enum_value, is_valid', [
('str1', True),
('str2', False),
])
def test_data_with_str_enum(self, enum_value, is_valid):
data = '{"my_str_enum": "' + str(enum_value) + '"}'
schema = DataWithStrEnum.schema()
res = schema.validate(json.loads(data))
no_errors = not res
assert no_errors == is_valid
class TestLoader:
@pytest.mark.parametrize('json_data, expected_data', [
(d1_json, d1),
(d2_json, d2_using_default_value),
(d3_int_json, d3_int),
(d4_float_json, d4_float),
])
def test_data_with_enum(self, json_data, expected_data):
schema = DataWithEnum.schema()
assert schema.loads(json_data) == expected_data
def test_data_with_enum_exception(self):
schema = DataWithEnum.schema()
with pytest.raises(ValidationError):
schema.loads('{"name": "name1", "my_enum": "str4"}')
@pytest.mark.parametrize('json_data, expected_data', [
(ds_json, ds),
])
def test_data_with_str_enum(self, json_data, expected_data):
schema = DataWithStrEnum.schema()
assert schema.loads(json_data) == expected_data
def test_data_with_str_enum_exception(self):
schema = DataWithStrEnum.schema()
with pytest.raises(ValidationError):
schema.loads('{"my_str_enum": "str2"}')
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