diff --git a/api/asset_manager/src/config.py b/api/asset_manager/src/config.py
index 1dfd3aaa..731da4f4 100644
--- a/api/asset_manager/src/config.py
+++ b/api/asset_manager/src/config.py
@@ -9,7 +9,12 @@ class Settings(BaseSettings):
     PROJECT_SUMMARY: str = "Product API for StoneEdge."
     SECRET_KEY: str | None = None
     HASHING_SCHEME: str = "HS512"
-    PSQL_CONNECT_STR: str = "postgres://user:password@localhost:5432/stoneedge"
+    PSQL_USERNAME: str = "user"
+    PSQL_PASSWORD: str = "password"
+    PSQL_HOSTNAME: str = "localhost"
+    PSQL_PORT: int = 5432
+    PSQL_DB_NAME: str = "stoneedge"
+    PSQL_TEST_DB_NAME: str = "stoneedge_testing"
     ACCESS_TOKEN_EXPIRE_MIN: int = 30
     REFRESH_TOKEN_EXPIRE_MIN: int = 60
     DEFAULT_TIMEZONE: str = pytz.UTC._tzname
diff --git a/api/asset_manager/src/database.py b/api/asset_manager/src/database.py
index 373cb511..8aa4382f 100644
--- a/api/asset_manager/src/database.py
+++ b/api/asset_manager/src/database.py
@@ -12,7 +12,18 @@ modules: dict[str, Any] = {
 }
 
 TORTOISE_ORM = {
-    "connections": {"default": settings.PSQL_CONNECT_STR},
+    "connections": {
+        "default": {
+            "engine": "tortoise.backends.asyncpg",
+            "credentials": {
+                "host": settings.PSQL_HOSTNAME,
+                "database": settings.PSQL_DB_NAME,
+                "user": settings.PSQL_USERNAME,
+                "password": settings.PSQL_PASSWORD,
+                "port": settings.PSQL_PORT,
+            },
+        }
+    },
     "apps": {
         "models": {
             "models": modules.get("models", []) + ["aerich.models"],
diff --git a/api/asset_manager/src/main.py b/api/asset_manager/src/main.py
index bab964b0..6898f7d5 100644
--- a/api/asset_manager/src/main.py
+++ b/api/asset_manager/src/main.py
@@ -2,6 +2,7 @@ from fastapi import FastAPI
 from tortoise import run_async
 from config import settings
 from database import migrate_db
+from responses import msgspec_jsonresponse
 
 from router import router as root_router
 from modules.assets.router import router as asset_router
@@ -13,6 +14,7 @@ app = FastAPI(
     title=settings.PROJECT_NAME,
     version=settings.PROJECT_VERSION,
     summary=settings.PROJECT_SUMMARY,
+    default_response_class=msgspec_jsonresponse
 )
 
 run_async(migrate_db())
diff --git a/api/asset_manager/src/modules/auth/router.py b/api/asset_manager/src/modules/auth/router.py
index f9fee0e0..d859c895 100644
--- a/api/asset_manager/src/modules/auth/router.py
+++ b/api/asset_manager/src/modules/auth/router.py
@@ -21,17 +21,17 @@ error: str = "E-Mail Address or password is incorrect"
 crypt = settings.CRYPT
 
 
-@router.post("/", status_code=200)
+@router.post("/")
 async def login(form: Annotated[OAuth2PasswordRequestForm, Depends()]):
     user: User | None = await User.filter(
         Q(email=form.username)
     ).get_or_none()
 
     if user is None:
-        return HTTPException(status_code=401, detail=error)
+        raise HTTPException(status_code=401, detail=error)
 
     if user.check_against_password(form.password) is False:
-        return HTTPException(status_code=401, detail=error)
+        raise HTTPException(status_code=401, detail=error)
 
     return JSONResponse(
         await Token.create(
diff --git a/api/asset_manager/src/modules/users/router.py b/api/asset_manager/src/modules/users/router.py
index 1614e488..4418c8e8 100644
--- a/api/asset_manager/src/modules/users/router.py
+++ b/api/asset_manager/src/modules/users/router.py
@@ -1,5 +1,7 @@
 from fastapi import APIRouter
 
+from modules.users.models import User
+
 
 router = APIRouter(prefix="/api/v1/users", tags=["users"])
 
@@ -8,7 +10,6 @@ router = APIRouter(prefix="/api/v1/users", tags=["users"])
 def get_all_users():
     pass
 
-
 @router.post("/")
 def create_user():
     pass
diff --git a/api/asset_manager/src/pyproject.toml b/api/asset_manager/src/pyproject.toml
index 0865fb21..b604f244 100644
--- a/api/asset_manager/src/pyproject.toml
+++ b/api/asset_manager/src/pyproject.toml
@@ -11,6 +11,7 @@ location = "./migrations"
 src_folder = "./."
 
 [tool.pytest.ini_options]
+asyncio_mode = "auto"
 asyncio_default_fixture_loop_scope = "session"
 testpaths = [
     "tests/",
diff --git a/api/asset_manager/src/requirements/requirements.txt b/api/asset_manager/src/requirements/requirements.txt
index fca1a188..74e9dd4c 100644
--- a/api/asset_manager/src/requirements/requirements.txt
+++ b/api/asset_manager/src/requirements/requirements.txt
@@ -8,10 +8,13 @@ joserfc>=1.0.1
 passlib>=1.7.4
 pytz>=2024.2
 ptpython>=0.25
+msgspec>=0.19.0
 
 # Test Suite
 httpx>=0.28.1
 pytest>=8.3.4
 mock>=5.1.0
 pytest-mock>=3.14.0
-anyio>=4.8.0
\ No newline at end of file
+pytest-asyncio>=0.25.3
+asyncio>=3.4.3
+asgi-lifespan>=2.1.0
\ No newline at end of file
diff --git a/api/asset_manager/src/responses.py b/api/asset_manager/src/responses.py
new file mode 100644
index 00000000..ef2fdf3c
--- /dev/null
+++ b/api/asset_manager/src/responses.py
@@ -0,0 +1,16 @@
+from typing import Any
+from fastapi.responses import JSONResponse
+
+try:
+    import msgspec # type: ignore
+except ImportError: # pragma: nocover
+    msgspec = None # type: ignore
+
+class msgspec_jsonresponse(JSONResponse):
+    """
+    JSON Response using the high-performance msgspec lib to serialize data to JSON.
+    """
+
+    def render(self, content: Any) -> bytes:
+        assert msgspec is not None, "msgspec must be installed to use msgspec_jsonresponse"
+        return msgspec.json.encode(content)
diff --git a/api/asset_manager/src/router.py b/api/asset_manager/src/router.py
index 00f8b7c9..74db5eb4 100644
--- a/api/asset_manager/src/router.py
+++ b/api/asset_manager/src/router.py
@@ -5,7 +5,7 @@ from fastapi.responses import JSONResponse, RedirectResponse
 router = APIRouter(prefix="/api/v1")
 
 @router.get("/")
-async def main():
+async def main() -> RedirectResponse:
     return RedirectResponse(url="/docs")
 
 
diff --git a/api/asset_manager/src/tests/conftest.py b/api/asset_manager/src/tests/conftest.py
new file mode 100644
index 00000000..00e78ee2
--- /dev/null
+++ b/api/asset_manager/src/tests/conftest.py
@@ -0,0 +1,85 @@
+from typing import AsyncGenerator, Optional, Self
+import httpx
+from tortoise import Tortoise
+import pytest  # type: ignore
+from database import modules
+from config import settings
+
+from asgi_lifespan import LifespanManager # type: ignore
+
+try:
+    from main import app
+except ImportError:
+    import sys
+    from pathlib import Path
+
+    sys.path.append(str(Path(__file__).parent.parent))
+    from main import app
+
+TORTOISE_ORM = {
+    "connections": {
+        "default": {
+            "engine": "tortoise.backends.asyncpg",
+            "credentials": {
+                "host": settings.PSQL_HOSTNAME,
+                "database": settings.PSQL_TEST_DB_NAME,
+                "user": settings.PSQL_USERNAME,
+                "password": settings.PSQL_PASSWORD,
+                "port": settings.PSQL_PORT,
+            },
+        }
+    },
+    "apps": {
+        "models": {
+            "models": modules.get("models", []) + ["aerich.models"],
+            "default_connection": "default",
+        },
+    },
+}
+
+
+@pytest.fixture(scope="session")
+def anyio_backend():
+    return "asyncio"
+
+
+class TestClient(httpx.AsyncClient):
+    def __init__(self, app, base_url="http://localhost", mount_lifespan=True, **kw) -> None:
+        self.mount_lifespan = mount_lifespan
+        self._manager: Optional[LifespanManager] = None
+        super().__init__(transport=httpx.ASGITransport(app), base_url=base_url, **kw)
+
+    async def __aenter__(self) -> Self:
+        if self.mount_lifespan:
+            app = self._transport.app  # type:ignore
+            self._manager = await LifespanManager(app).__aenter__()
+            self._transport = httpx.ASGITransport(app=self._manager.app)
+        return await super().__aenter__()
+
+    async def __aexit__(self, *args, **kw):
+        await super().__aexit__(*args, **kw)
+        if self._manager is not None:
+            await self._manager.__aexit__(*args, **kw)
+
+async def init_db(create_db: bool = True, schemas: bool = True) -> None:
+    """Initial database connection"""
+    await Tortoise.init(
+        config=TORTOISE_ORM, timezone="Europe/Helsinki"
+    )
+    if create_db:
+        print(f"Database created!")
+    if schemas:
+        await Tortoise.generate_schemas()
+        print("Success to generate schemas")
+
+@pytest.fixture(scope="session", autouse=True)
+async def initialize_tests():
+    await init_db()
+    yield
+    await Tortoise._drop_databases()
+
+
+@pytest.fixture(scope="session")
+async def client() -> AsyncGenerator[TestClient, None]:
+    async with TestClient(app) as c:
+        yield c
\ No newline at end of file
diff --git a/api/asset_manager/src/tests/fixtures/__init__.py b/api/asset_manager/src/tests/fixtures/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/api/asset_manager/src/tests/fixtures/conftest.py b/api/asset_manager/src/tests/fixtures/conftest.py
deleted file mode 100644
index 393e5e5b..00000000
--- a/api/asset_manager/src/tests/fixtures/conftest.py
+++ /dev/null
@@ -1,43 +0,0 @@
-import pytest
-from httpx import AsyncClient
-from tortoise import Tortoise
-from database import modules
-
-from main import app
-
-DB_URL = "sqlite://:memory:"
-
-
-async def init_db(db_url, create_db: bool = True, schemas: bool = True) -> None:
-    """Initial database connection"""
-    await Tortoise.init(
-        db_url=db_url, modules={"models": modules}, _create_db=create_db
-    )
-    if create_db:
-        print(f"Database created! {db_url = }")
-    if schemas:
-        await Tortoise.generate_schemas()
-        print("Success to generate schemas")
-
-
-async def init(db_url: str = DB_URL):
-    await init_db(db_url, True, True)
-
-
-@pytest.fixture(scope="session")
-def anyio_backend():
-    return "anyio"
-
-
-@pytest.fixture(scope="session")
-async def client():
-    async with AsyncClient(app=app, base_url="http://test") as client:
-        print("Client is ready")
-        yield client
-
-
-@pytest.fixture(scope="session", autouse=True)
-async def initialize_tests():
-    await init()
-    yield
-    await Tortoise._drop_databases()
diff --git a/api/asset_manager/src/tests/test_authentication/test_authentication.py b/api/asset_manager/src/tests/test_authentication/test_authentication.py
index 59f357ee..eb7387ba 100644
--- a/api/asset_manager/src/tests/test_authentication/test_authentication.py
+++ b/api/asset_manager/src/tests/test_authentication/test_authentication.py
@@ -1,32 +1,23 @@
-from tests.fixtures.conftest import init_db
 import pytest
-from fastapi.testclient import TestClient
+from httpx import AsyncClient
 from modules.organizations.models import Organization
 from modules.users.models import ACL, Membership, User
-from main import app
 from config import settings
-
-client = TestClient(app)
-
 crypt = settings.CRYPT
 
-
+@pytest.mark.anyio
 async def setup_function():
-    init_db()
     org = await Organization.create(name="Admin's Organization", type="home")
     user = await User.create(
         email="admin@localhost.com",
         username="admin",
         name="admin",
         surname="admin",
+        password=crypt.hash("password")
     )
-    user.set_password("password")
-    user.save()
     acl = await ACL.create(READ=True, WRITE=True, REPORT=True, MANAGE=True, ADMIN=True)
     await Membership.create(organization=org, user=user, acl=acl)
 
-    print(org, user, acl)
-
 
 # def teardown_function():
 #     Organization.all().delete()
@@ -34,10 +25,10 @@ async def setup_function():
 #     ACL.all().delete()
 #     Membership.all().delete()
 
-
-def test_read_main():
-    response = client.post(
-        "/api/v1/auth",
+async def test_read_main(client: AsyncClient):
+    print("start")
+    response = await client.post(
+        "http://localhost/api/v1/auth",
         data={
             "username": "admin@localhost.com",
             "password": "password",
diff --git a/api/asset_manager/src/tests/test_general_routes/test_main_routes.py b/api/asset_manager/src/tests/test_general_routes/test_main_routes.py
index 73784753..d40de3d3 100644
--- a/api/asset_manager/src/tests/test_general_routes/test_main_routes.py
+++ b/api/asset_manager/src/tests/test_general_routes/test_main_routes.py
@@ -1,16 +1,15 @@
-from fastapi.testclient import TestClient
-from main import app
+import pytest
+from httpx import AsyncClient
 
-client = TestClient(app)
 
-def setup_function():
-    print("setting up")
+@pytest.mark.anyio
+async def test_read_main(client: AsyncClient):
+    response = await client.get("http://localhost:8000/api/v1/")
+    assert response.status_code == 307
 
-def test_read_main():
-    response = client.get("/api/v1/")
-    assert response.status_code == 200
 
-def test_get_pong():
-    response = client.get("/api/v1/ping")
+@pytest.mark.anyio
+async def test_get_pong(client: AsyncClient):
+    response = await client.get("http://localhost:8000/api/v1/ping")
     assert response.status_code == 200
     assert response.text == '"PONG"'