test: refactor suite to use AsyncClient, in-memory DBs, and parallel coverage

tests/api/auth/test_login.py

@@ -1,4 +1,5 @@
 import json
+import pytest
 from fastapi.testclient import TestClient
 from decnet.web.api import app
 from hypothesis import given, strategies as st, settings
@@ -6,44 +7,46 @@ import httpx
 from decnet.env import DECNET_ADMIN_USER, DECNET_ADMIN_PASSWORD
 from ..conftest import _FUZZ_SETTINGS
 
-def test_login_success() -> None:
-    with TestClient(app) as client:
-        response = client.post(
-            "/api/v1/auth/login", 
-            json={"username": DECNET_ADMIN_USER, "password": DECNET_ADMIN_PASSWORD}
-        )
-        assert response.status_code == 200
-        data = response.json()
-        assert "access_token" in data
-        assert data["token_type"] == "bearer"
-        assert "must_change_password" in data
-        assert data["must_change_password"] is True
+@pytest.mark.anyio
+async def test_login_success(client: httpx.AsyncClient) -> None:
+    response = await client.post(
+        "/api/v1/auth/login",
+        json={"username": DECNET_ADMIN_USER, "password": DECNET_ADMIN_PASSWORD}
+    )
+    assert response.status_code == 200
+    data = response.json()
+    assert "access_token" in data
+    assert data["token_type"] == "bearer"
+    assert "must_change_password" in data
+    assert data["must_change_password"] is True
 
-def test_login_failure() -> None:
-    with TestClient(app) as client:
-        response = client.post(
-            "/api/v1/auth/login", 
-            json={"username": DECNET_ADMIN_USER, "password": "wrongpassword"}
-        )
-        assert response.status_code == 401
-        
-        response = client.post(
-            "/api/v1/auth/login", 
-            json={"username": "nonexistent", "password": "wrongpassword"}
-        )
-        assert response.status_code == 401
+@pytest.mark.anyio
+async def test_login_failure(client: httpx.AsyncClient) -> None:
+    response = await client.post(
+        "/api/v1/auth/login",
+        json={"username": DECNET_ADMIN_USER, "password": "wrongpassword"}
+    )
+    assert response.status_code == 401
 
+    response = await client.post(
+        "/api/v1/auth/login",
+        json={"username": "nonexistent", "password": "wrongpassword"}
+    )
+    assert response.status_code == 401
+
+@pytest.mark.anyio
 @settings(**_FUZZ_SETTINGS)
 @given(
     username=st.text(min_size=0, max_size=2048),
     password=st.text(min_size=0, max_size=2048)
 )
-def test_fuzz_login(username: str, password: str) -> None:
+
+@pytest.mark.anyio
+async def test_fuzz_login(client: httpx.AsyncClient, username: str, password: str) -> None:
     """Fuzz the login endpoint with random strings (including non-ASCII)."""
-    with TestClient(app) as _client:
-        _payload: dict[str, str] = {"username": username, "password": password}
-        try:
-            _response: httpx.Response = _client.post("/api/v1/auth/login", json=_payload)
-            assert _response.status_code in (200, 401, 422)
-        except (UnicodeEncodeError, json.JSONDecodeError):
-            pass
+    _payload: dict[str, str] = {"username": username, "password": password}
+    try:
+        _response: httpx.Response = await client.post("/api/v1/auth/login", json=_payload)
+        assert _response.status_code in (200, 401, 422)
+    except (UnicodeEncodeError, json.JSONDecodeError):
+        pass