chore: update project structure and add testing framework

tests/services/__init__.py

@@ -0,0 +1 @@
+# Services tests package

tests/services/test_auth_service.py

@@ -0,0 +1,27 @@
+from src.services.auth_service import create_access_token
+from src.models.models import User
+import uuid
+
+
+def test_create_access_token():
+    """
+    Test that an access token is created with the correct data.
+    """
+    # Create a mock user
+    user = User(
+        id=uuid.uuid4(),
+        email="test@example.com",
+        hashed_password="hashed_password",
+        is_active=True,
+        is_admin=False,
+        name="Test User",
+        client_id=uuid.uuid4(),
+    )
+
+    # Create token
+    token = create_access_token(user)
+
+    # Simple validation
+    assert token is not None
+    assert isinstance(token, str)
+    assert len(token) > 0