for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
import pytest
from lagom import Construction, Container
class MySimpleDep:
stuff: str
def __init__(self, stuff):
self.stuff = stuff
class MyMoreComplicatedDep:
complicated_stuff: str
def __init__(self, dep: MySimpleDep):
self.stuff = "complicated " + dep.stuff
@pytest.fixture
def container_with_simple_dep(container: Container):
container.define(MySimpleDep, Construction(lambda: MySimpleDep("Top stuff")))
return container
def test_works_for_registered_types(container_with_simple_dep):
resolved = container_with_simple_dep.resolve(MySimpleDep)
assert resolved.stuff == "Top stuff"
def test_works_if_every_item_in_the_constructor_can_be_figured_out(
container_with_simple_dep
):
resolved = container_with_simple_dep.resolve(MyMoreComplicatedDep)
assert resolved.stuff == "complicated Top stuff"
@pytest.mark.parametrize("dep", [MySimpleDep, MyMoreComplicatedDep])
def test_dependencies_are_built_each_request(container_with_simple_dep: Container, dep):
first = container_with_simple_dep.resolve(dep)
second = container_with_simple_dep.resolve(dep)
assert first is not second
meadsteve /
lagom
