🐛 fix: not resolving aliases

rodi/__init__.py

@@ -509,7 +509,7 @@ def _get_resolvers_for_parameters(
                 # but at least Optional could be supported in the future
                 raise UnsupportedUnionTypeException(param_name, concrete_type)
 
-            if param_type is _empty:
+            if param_type is _empty or param_type not in services._map:
                 if services.strict:
                     raise CannotResolveParameterException(param_name, concrete_type)
 
@@ -521,6 +521,14 @@ def _get_resolvers_for_parameters(
                 else:
                     aliases = services._aliases[param_name]
 
+                    if not aliases:
+                        cls_name = class_name(param_type)
+                        aliases = (
+                            services._aliases[cls_name]
+                            or services._aliases[cls_name.lower()]
+                            or services._aliases[to_standard_param_name(cls_name)]
+                        )
+
                     if aliases:
                         assert (
                             len(aliases) == 1

tests/test_services.py

@@ -687,6 +687,31 @@ def __init__(self, cats_controller, service_settings):
     assert isinstance(u.cats_controller.cat_request_handler, GetCatRequestHandler)
 
 
+def test_alias_dep_resolving():
+    container = arrange_cats_example()
+
+    class BaseClass: ...
+
+    class DerivedClass(BaseClass): ...
+
+    class UsingAliasByType:
+        def __init__(self, example: BaseClass):
+            self.example = example
+
+    def resolve_derived_class(_) -> DerivedClass:
+        return DerivedClass()
+
+    container.add_scoped_by_factory(resolve_derived_class, DerivedClass)
+    container.add_alias("BaseClass", DerivedClass)
+    container.add_scoped(UsingAliasByType)
+
+    provider = container.build_provider()
+    u = provider.get(UsingAliasByType)
+
+    assert isinstance(u, UsingAliasByType)
+    assert isinstance(u.example, DerivedClass)
+
+
 def test_get_service_by_name_or_alias():
     container = arrange_cats_example()
     container.add_alias("k", CatsController)