chore(tests): improve raw response test

tests/test_client.py

@@ -32,10 +32,14 @@ def _get_params(client: BaseClient) -> dict[str, str]:
 class TestFinch:
     client = Finch(base_url=base_url, access_token=access_token, _strict_response_validation=True)
 
-    def test_raw_response(self) -> None:
-        response = self.client.get("/providers", cast_to=httpx.Response)
+    @pytest.mark.respx(base_url=base_url)
+    def test_raw_response(self, respx_mock: MockRouter) -> None:
+        respx_mock.post("/foo").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
+
+        response = self.client.post("/foo", cast_to=httpx.Response)
         assert response.status_code == 200
         assert isinstance(response, httpx.Response)
+        assert response.json() == {"foo": "bar"}
 
     def test_copy(self) -> None:
         copied = self.client.copy()
@@ -420,10 +424,15 @@ class Model(BaseModel):
 class TestAsyncFinch:
     client = AsyncFinch(base_url=base_url, access_token=access_token, _strict_response_validation=True)
 
-    async def test_raw_response(self) -> None:
-        response = await self.client.get("/providers", cast_to=httpx.Response)
+    @pytest.mark.respx(base_url=base_url)
+    @pytest.mark.asyncio
+    async def test_raw_response(self, respx_mock: MockRouter) -> None:
+        respx_mock.post("/foo").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
+
+        response = await self.client.post("/foo", cast_to=httpx.Response)
         assert response.status_code == 200
         assert isinstance(response, httpx.Response)
+        assert response.json() == {"foo": "bar"}
 
     def test_copy(self) -> None:
         copied = self.client.copy()