Add basic tests for using context managers as dependencies

tests/test_dependency_contextmanager.py

@@ -1,4 +1,5 @@
 from typing import Dict
+from contextlib import asynccontextmanager, contextmanager
 
 import pytest
 from fastapi import BackgroundTasks, Depends, FastAPI
@@ -8,6 +9,8 @@ app = FastAPI()
 state = {
     "/async": "asyncgen not started",
     "/sync": "generator not started",
+    "/async_ctxmgr": "asyncgen_ctxmgr not started",
+    "/sync_ctxmgr": "generator_ctxmgr not started",
     "/async_raise": "asyncgen raise not started",
     "/sync_raise": "generator raise not started",
     "context_a": "not started a",
@@ -47,6 +50,20 @@ def generator_state(state: Dict[str, str] = Depends(get_state)):
     state["/sync"] = "generator completed"
 
 
+@asynccontextmanager
+async def asyncgen_state_ctxmgr(state: Dict[str, str] = Depends(get_state)):
+    state["/async_ctxmgr"] = "asyncgen_ctxmgr started"
+    yield state["/async_ctxmgr"]
+    state["/async_ctxmgr"] = "asyncgen_ctxmgr completed"
+
+
+@contextmanager
+def generator_state_ctxmgr(state: Dict[str, str] = Depends(get_state)):
+    state["/sync_ctxmgr"] = "generator_ctxmgr started"
+    yield state["/sync_ctxmgr"]
+    state["/sync_ctxmgr"] = "generator_ctxmgr completed"
+
+
 async def asyncgen_state_try(state: Dict[str, str] = Depends(get_state)):
     state["/async_raise"] = "asyncgen raise started"
     try:
@@ -93,6 +110,16 @@ async def get_sync(state: str = Depends(generator_state)):
     return state
 
 
+@app.get("/async_ctxmgr")
+async def get_async(state: str = Depends(asyncgen_state_ctxmgr)):
+    return state
+
+
+@app.get("/sync_ctxmgr")
+async def get_sync(state: str = Depends(generator_state_ctxmgr)):
+    return state
+
+
 @app.get("/async_raise")
 async def get_async_raise(state: str = Depends(asyncgen_state_try)):
     assert state == "asyncgen raise started"
@@ -219,6 +246,22 @@ def test_sync_state():
     assert state["/sync"] == "generator completed"
 
 
+def test_async_ctxmgr_state():
+    assert state["/async_ctxmgr"] == "asyncgen_ctxmgr not started"
+    response = client.get("/async_ctxmgr")
+    assert response.status_code == 200, response.text
+    assert response.json() == "asyncgen_ctxmgr started"
+    assert state["/async_ctxmgr"] == "asyncgen_ctxmgr completed"
+
+
+def test_sync_ctxmgr_state():
+    assert state["/sync_ctxmgr"] == "generator_ctxmgr not started"
+    response = client.get("/sync_ctxmgr")
+    assert response.status_code == 200, response.text
+    assert response.json() == "generator_ctxmgr started"
+    assert state["/sync_ctxmgr"] == "generator_ctxmgr completed"
+
+
 def test_async_raise_other():
     assert state["/async_raise"] == "asyncgen raise not started"
     with pytest.raises(OtherDependencyError):