def test_injector_own_kwonly():
injector = Injector()
class Config(dict):
def __init__(self):
super().__init__(some_key="OK")
def get_kwarg(config: Config, *, name, type):
assert name == "some_key"
assert type is str
return config[name]
def fn(*, some_key: str):
assert some_key == "OK"
return "NICE"
injector.provide(Config)
injector.provide(fn, provide=[KwOnly(get_kwarg)])
assert injector.get(fn) == "NICE"
with pytest.raises(InjectError) as exc:
assert injector.exec(fn) == "NICE"
exc.match(
"Not found suitable value for: <ValueResolver name=some_key id=<class 'str'>>"
)
def test_injector_exec_object():
BINST = "BInstance"
injector = Injector()
class A:
pass
class B:
def __call__(self, a: A):
assert isinstance(a, A)
return "BBBB"
def fn1(arg: B):
assert isinstance(arg, B)
return "fn1"
def fn2(arg: BINST):
assert arg == "BBBB"
return "fn2"
injector.provide(A)
injector.provide(B)
injector.provide(BINST, B())
assert injector.exec(fn1) == "fn1"
assert injector.exec(fn2) == "fn2"
def test_injector_attribute_inheritance():
injector = Injector()
class A:
pass
class B:
a: Inject[A]
def __init__(self):
assert isinstance(self.a, A)
class X:
pass
class C(B):
x: Inject[X]
def __init__(self):
super().__init__()
assert isinstance(self.x, X)
injector.provide(A)
injector.provide(X)
c = injector.exec(C)
assert isinstance(c, C)
assert isinstance(c.a, A)
assert isinstance(c.x, X)
def test_forwardref_fn():
def fn(a: "A"):
assert isinstance(a, A)
return "OK"
injector = Injector()
injector.provide(A)
assert injector.exec(fn) == "OK"
def test_injector_kwonly_error():
injector = Injector()
class Config(dict):
def __init__(self):
super().__init__(some_key="OK")
def get_kwarg(config: Config, *, name, type, xx):
pass
def fn(*, some_key: str):
pass
injector.provide(Config)
injector.provide(KwOnly(get_kwarg))
with pytest.raises(InjectError) as exc:
injector.exec(fn)
exc.match("^Not found suitable value for")
def test_injector_setitem():
class A:
pass
injector = Injector()
injector[A] = A()
def fn(a: A):
assert isinstance(a, A)
return "OK"
assert injector.exec(fn) == "OK"
del injector[A]
with pytest.raises(InjectError) as exc:
injector.exec(fn) == "OK"
exc.match("Not found suitable value for")
def test_injector_exec_cls():
injector = Injector()
class A:
pass
class B:
def __init__(self, a: A):
assert isinstance(a, A)
injector.provide(A)
assert isinstance(injector.exec(B), B)
def test_injector_exec_fn():
injector = Injector()
class A:
pass
def x(a: A):
assert isinstance(a, A)
return "OK"
injector.provide(A)
assert injector.exec(x) == "OK"
def test_injector_recursion():
injector = Injector()
class A:
def __init__(self, a: "A") -> None:
pass
injector.provide(A)
injector.provide("A", A)
def x(a: A):
return "OK"
with pytest.raises(RecursionError):
assert injector.exec(x) == "OK"
def test_injector_attribute():
injector = Injector()
class A:
pass
class B:
a: Inject[A]
def __init__(self):
assert isinstance(self.a, A)
injector.provide(A)
b = injector.exec(B)
assert isinstance(b, B)
assert isinstance(b.a, A)
def test_generic_param():
T = TypeVar("T")
class A(Generic[T]):
b: Inject[T]
class B:
pass
def fn(a: A[B]):
assert isinstance(a, A)
assert isinstance(a.b, B)
return "OK"
injector = Injector()
injector.provide(A)
injector.provide(B)
assert injector.exec(fn) == "OK"
def test_injector_kwonly2():
injector = Injector()
class Config(dict):
def __init__(self):
super().__init__(some_key="OK")
def __call__(self, *, name, type):
assert name == "some_key"
assert type is str
return self[name]
def fn(*, some_key: str):
assert some_key == "OK"
return "NICE"
injector.provide(KwOnly(Config()))
assert injector.exec(fn) == "NICE"
def test_token():
TOKEN = Token("__token__")
assert repr(TOKEN) == "<class 'test_injector.__token__'>"
class A:
pass
def fn(a: TOKEN):
assert isinstance(a, A)
return "OK"
injector = Injector()
injector.provide(TOKEN, A)
assert injector.exec(fn) == "OK"
with pytest.raises(TypeError) as exc:
Token(None)
exc.match("argument 1 must be str")
def test_injector_kwonly():
injector = Injector()
class Config(dict):
def __init__(self):
super().__init__(some_key="OK")
def get_kwarg(config: Config, *, name, type):
assert name == "some_key"
assert type is str
return config[name]
def fn(*, some_key: str):
assert some_key == "OK"
return "NICE"
injector.provide(Config)
injector.provide(KwOnly(get_kwarg))
assert injector.exec(fn) == "NICE"
def test_func_forward():
injector = Injector()
injector.provide(SelfInject)
x = injector.exec(fn_def_forward)
assert isinstance(x, SelfInject)
def test_func_default():
injector = Injector()
injector.exec(fn_def_arg1)
def fn(i: Injector, a: A):
assert isinstance(a, A)
assert a is ainst
assert injector[A] is not a
return i.exec(fn2)
