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from typing import NewType, List |
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3
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try: |
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from typing import Protocol |
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except ImportError: |
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from typing_extensions import Protocol # type: ignore |
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8
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from lagom import Container |
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MyServiceUrl = NewType("MyServiceUrl", str) |
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12
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class ApiClientOfSomeKind: |
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def __init__(self, url: MyServiceUrl): |
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pass |
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class LoadBalancePerhaps: |
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def __init__(self, urls: List[MyServiceUrl]): |
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pass |
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class BakerProtocol(Protocol): |
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def bake(self) -> str: |
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pass |
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class Bakery: |
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def __init__(self, baker: BakerProtocol): |
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pass |
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32
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class CrumpetBaker: |
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def bake(self) -> str: |
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return "crumpets" |
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37
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38
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def test_newtype_works_well_with_the_container(container: Container): |
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container[MyServiceUrl] = MyServiceUrl("https://roll.diceapi.com") |
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api_client = container[ApiClientOfSomeKind] |
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assert isinstance(api_client, ApiClientOfSomeKind) |
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43
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44
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def test_lists_of_newtype_work_well_with_the_container(container: Container): |
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container[List[MyServiceUrl]] = [ |
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MyServiceUrl("https://roll.diceapi.com"), |
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MyServiceUrl("https://lol.diceapi.com"), |
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48
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] |
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load_balancer = container[LoadBalancePerhaps] |
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assert isinstance(load_balancer, LoadBalancePerhaps) |
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51
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52
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53
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def test_protocols_work_well_with_the_container(container: Container): |
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# TODO: update contracts so this type ignore can be removed |
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container[BakerProtocol] = CrumpetBaker # type: ignore |
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bakery = container[Bakery] |
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assert isinstance(bakery, Bakery) |
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meadsteve /
lagom
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