fix (#75): correct main empty body processing

fast_depends/core/model.py

@@ -258,15 +258,15 @@ def _solve(
             keyword_args = self.keyword_args
 
         else:
-            keyword_args = self.keyword_args + self.positional_args
-            for arg in self.keyword_args:
+            keyword_args = set(self.keyword_args + self.positional_args)
+            for arg in keyword_args - set(self.dependencies.keys()):
                 if args:
                     kw[arg], args = args[0], args[1:]
                 else:
                     break
 
         solved_kw: Dict[str, Any]
-        solved_kw = yield (), kw, call
+        solved_kw = yield args, kw, call
 
         args_: Sequence[Any]
         if self.cast:
@@ -347,14 +347,15 @@ def solve(
             **kwargs,
         )
         try:
-            _, kwargs, _ = next(cast_gen)
+            args, kwargs, _ = next(cast_gen)
         except StopIteration as e:
             cached_value: T = e.value
             return cached_value
 
         # Heat cache and solve extra dependencies
         for dep, _ in self.sorted_dependencies:
             dep.solve(
+                *args,
                 stack=stack,
                 cache_dependencies=cache_dependencies,
                 dependency_overrides=dependency_overrides,
@@ -365,6 +366,7 @@ def solve(
         # Always get from cache
         for dep in self.extra_dependencies:
             dep.solve(
+                *args,
                 stack=stack,
                 cache_dependencies=cache_dependencies,
                 dependency_overrides=dependency_overrides,
@@ -447,7 +449,7 @@ async def asolve(
             **kwargs,
         )
         try:
-            _, kwargs, _ = next(cast_gen)
+            args, kwargs, _ = next(cast_gen)
         except StopIteration as e:
             cached_value: T = e.value
             return cached_value
@@ -459,6 +461,7 @@ async def asolve(
                 for dep, subdep in self.sorted_dependencies:
                     solve = partial(
                         dep.asolve,
+                        *args,
                         stack=stack,
                         cache_dependencies=cache_dependencies,
                         dependency_overrides=dependency_overrides,
@@ -479,6 +482,7 @@ async def asolve(
         # Always get from cache
         for dep in self.extra_dependencies:
             await dep.asolve(
+                *args,
                 stack=stack,
                 cache_dependencies=cache_dependencies,
                 dependency_overrides=dependency_overrides,

tests/async/test_depends.py

@@ -23,6 +23,19 @@ async def some_func(b: int, c=Depends(dep_func)) -> int:
     assert (await some_func("2")) == 7
 
 
+@pytest.mark.anyio
+async def test_empty_main_body():
+    async def dep_func(a: int) -> float:
+        return a
+
+    @inject
+    async def some_func(c=Depends(dep_func)):
+        assert isinstance(c, float)
+        assert c == 1.0
+
+    await some_func("1")
+
+
 @pytest.mark.anyio
 async def test_sync_depends():
     def sync_dep_func(a: int) -> float:

tests/sync/test_depends.py

@@ -22,6 +22,18 @@ def some_func(b: int, c=Depends(dep_func)) -> int:
     assert some_func("2") == 7
 
 
+def test_empty_main_body():
+    def dep_func(a: int) -> float:
+        return a
+
+    @inject
+    def some_func(c=Depends(dep_func)):
+        assert isinstance(c, float)
+        assert c == 1.0
+
+    some_func("1")
+
+
 def test_depends_error():
     def dep_func(b: dict, a: int = 3) -> float:  # pragma: no cover
         return a + b