tests.test_container_updaters

Complexity

Total Complexity

3

Size/Duplication

Total Lines	39
Duplicated Lines	0 %

Importance

Changes

0

3 Functions

Rating	Name	Duplication	Size	Complexity
A	test_a_new_container_can_be_made_with_singletons()	0	4	1
A	test_a_new_container_with_singletons_leaves_the_original_unaffected()	0	4	1
A	test_a_new_container_can_be_made_with_many_types_as_singletons()	0	7	1

from lagom import Container
from lagom.updaters import update_container_singletons


class ThingOne:
    pass


class ThingTwo:
    pass


class ThingThree:
    pass


c = Container()


def test_a_new_container_can_be_made_with_singletons():
    singleton_container = update_container_singletons(c, [ThingOne])
    assert singleton_container[ThingOne] is singleton_container[ThingOne]
    assert isinstance(singleton_container[ThingOne], ThingOne)


def test_a_new_container_with_singletons_leaves_the_original_unaffected():
    singleton_container = update_container_singletons(c, [ThingOne])
    singleton_container.resolve(ThingOne)
    assert c[ThingOne] is not c[ThingOne]


def test_a_new_container_can_be_made_with_many_types_as_singletons():
    singleton_container = update_container_singletons(
        c, [ThingOne, ThingTwo, ThingThree]
    )
    assert isinstance(singleton_container[ThingOne], ThingOne)
    assert isinstance(singleton_container[ThingTwo], ThingTwo)
    assert isinstance(singleton_container[ThingThree], ThingThree)