diff --git a/.gitignore b/.gitignore
index c1491a0..613d039 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 **/.terraform.lock.hcl
 **/*.tfstate
 **/*.tfstate.backup
+__pycache__/
\ No newline at end of file
diff --git a/main.py b/main.py
index 6ebc046..974797e 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,5 @@
 import datetime
 from http import HTTPStatus
-from tabnanny import check
 from typing import Annotated
 
 import uvicorn
diff --git a/projects.py b/projects.py
index 60fc82e..236d196 100644
--- a/projects.py
+++ b/projects.py
@@ -140,7 +140,7 @@ def add_team_to_project(team_id: str, project_id: str) -> None:
 
                 if team_id not in team_ids:
                     cur.execute("""
-                                INSERT INTO project_teams VALUES (2, %s, %s)""",
+                                INSERT INTO project_teams(team_id, project_id) VALUES (%s, %s)""",
                                 (team_id, project_id))
     except Exception as e:
         logger.error(e)
diff --git a/tests/python/unit_tests/test_auth_functions.py b/tests/python/unit_tests/test_auth_functions.py
new file mode 100644
index 0000000..c68d627
--- /dev/null
+++ b/tests/python/unit_tests/test_auth_functions.py
@@ -0,0 +1,34 @@
+import pytest
+import time
+from unittest.mock import patch, MagicMock
+from backend.auth_functions import (
+    decode_token, get_user, get_authenticated_user,
+    user_exists, register_user, update_user_token, disable_user
+)
+from backend.user import User
+
+@pytest.fixture
+def mock_db_conn(monkeypatch):
+    mock_conn = MagicMock()
+    mock_cursor = MagicMock()
+    mock_conn.__enter__.return_value = mock_conn
+    mock_conn.cursor.return_value.__enter__.return_value = mock_cursor
+    monkeypatch.setattr('backend.auth_functions.get_db_connection', lambda: mock_conn)
+    return mock_cursor
+
+def test_user_exists_true(monkeypatch):
+    monkeypatch.setattr('backend.auth_functions.get_user', lambda username: User(username='user', sha512_hash='hash', salt='salt'))
+    assert user_exists(User(username='user', sha512_hash='hash', salt='salt'))
+
+def test_user_exists_false(monkeypatch):
+    monkeypatch.setattr('backend.auth_functions.get_user', lambda username: None)
+    assert not user_exists(User(username='nouser', sha512_hash='hash', salt='salt'))
+
+def test_register_user_success(mock_db_conn):
+    user = User(username='user', sha512_hash='hash', salt='salt')
+    try:
+        register_user(user)
+    except Exception:
+        pytest.fail('register_user raised Exception unexpectedly!')
+
+# Ajoute d'autres tests pour update_user_token, disable_user, etc.
diff --git a/tests/python/unit_tests/unit_tests.py b/tests/python/unit_tests/unit_tests.py
new file mode 100644
index 0000000..e69de29