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1
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from dataclasses import dataclass |
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2
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from typing import Awaitable |
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3
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4
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import pytest |
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5
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6
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from lagom import Container, dependency_definition, Singleton |
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7
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from lagom.exceptions import TypeOnlyAvailableAsAwaitable |
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8
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9
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10
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@dataclass |
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11
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class MyComplexDep: |
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12
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some_number: int |
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13
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14
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@classmethod |
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15
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async def asyc_loader(cls): |
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16
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return cls(10) |
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17
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18
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19
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@pytest.mark.asyncio |
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20
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async def test_simple_async_component_def(container: Container): |
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21
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@dependency_definition(container) |
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22
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async def my_constructor() -> MyComplexDep: |
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23
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return MyComplexDep(some_number=5) |
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24
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25
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assert (await container[Awaitable[MyComplexDep]]) == MyComplexDep(some_number=5) # type: ignore |
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26
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27
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28
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@pytest.mark.asyncio |
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29
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async def test_alternative_way_of_defining_an_async_dep(container: Container): |
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30
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container[Awaitable[MyComplexDep]] = MyComplexDep.asyc_loader # type: ignore |
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31
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32
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assert (await container[Awaitable[MyComplexDep]]) == MyComplexDep(some_number=10) # type: ignore |
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33
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34
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35
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@pytest.mark.asyncio |
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36
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async def test_async_singleton_do_not_raise_runtime_error(container: Container): |
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37
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container[Awaitable[MyComplexDep]] = Singleton(MyComplexDep.asyc_loader) # type: ignore[type-abstract] |
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38
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39
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assert (await container[Awaitable[MyComplexDep]]) == MyComplexDep(some_number=10) # type: ignore[type-abstract] |
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40
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assert (await container[Awaitable[MyComplexDep]]) == MyComplexDep(some_number=10) # type: ignore[type-abstract] |
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41
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42
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43
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@pytest.mark.asyncio |
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44
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async def test_defining_an_async_dep_provides_a_helpful_error_if_you_forget_awaitable( |
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45
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container: Container, |
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46
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): |
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47
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container[Awaitable[MyComplexDep]] = MyComplexDep.asyc_loader # type: ignore |
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48
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49
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with pytest.raises(TypeOnlyAvailableAsAwaitable): |
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50
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assert container[MyComplexDep] |
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51
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52
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53
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@pytest.mark.asyncio |
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54
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async def test_a_sync_and_async_version_can_be_defined( |
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55
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container: Container, |
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56
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): |
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57
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container[MyComplexDep] = lambda: MyComplexDep(5) |
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58
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container[Awaitable[MyComplexDep]] = MyComplexDep.asyc_loader # type: ignore |
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59
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60
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assert container[MyComplexDep] |
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61
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assert container[Awaitable[MyComplexDep]] # type: ignore |
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62
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meadsteve /
lagom
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