Raise AsyncDependencyForbiddenError on async function provided as …

…a dependency (#11)

* Raise `AsyncDependencyProvided` on async function provided as dependency.

* `AsyncDependencyForbiddenError` on injector.register if dep is async

---------

Co-authored-by: isaev-vs <[email protected]>

giveme/injector.py

@@ -10,6 +10,10 @@ class DependencyNotFoundError(Exception):
     pass
 
 
+class AsyncDependencyForbiddenError(Exception):
+    pass
+
+
 class DependencyNotFoundWarning(RuntimeWarning):
     pass
 
@@ -83,6 +87,8 @@ def _set(self, name, factory, singleton=False, threadlocal=False):
             Same functionality as ``singleton`` except :class:`Threading.local` is used
             to cache return values.
         """
+        if iscoroutinefunction(factory):
+            raise AsyncDependencyForbiddenError(name)
         name = name or factory.__name__
         factory._giveme_registered_name = name
         dep = Dependency(name, factory, singleton, threadlocal)

tests.py

@@ -5,6 +5,7 @@
 from multiprocessing.pool import ThreadPool
 
 from giveme import register, inject, DependencyNotFoundError
+from giveme.injector import AsyncDependencyForbiddenError
 
 
 def test_inject():
@@ -236,6 +237,10 @@ def simple_dep():
     return 42
 
 
+async def async_simple_dep():
+    return 566
+
+
 def double_dep(simple_dep):
     return simple_dep*2
 
@@ -451,3 +456,9 @@ def f(list_dep):
 
     with pytest.raises(TypeError):
         f()
+
+
+@pytest.mark.asyncio
+async def test_inject_async_dep(gm):
+    with pytest.raises(AsyncDependencyForbiddenError):
+        gm.register(async_simple_dep)