feat: implement mvp with email-first login flow and langgraph architecture

tests/test_auth_flow.py

@@ -0,0 +1,49 @@
+import pytest
+from unittest.mock import MagicMock
+from ea_chatbot.history.manager import HistoryManager
+from ea_chatbot.auth import get_user_auth_type, AuthType
+
+# Mocks
+@pytest.fixture
+def mock_history_manager():
+    return MagicMock(spec=HistoryManager)
+
+def test_auth_flow_existing_local_user(mock_history_manager):
+    """Test that an existing user with a password returns LOCAL auth type."""
+    # Setup
+    mock_user = MagicMock()
+    mock_user.password_hash = "hashed_secret"
+    mock_history_manager.get_user.return_value = mock_user
+
+    # Execute
+    auth_type = get_user_auth_type("test@example.com", mock_history_manager)
+
+    # Verify
+    assert auth_type == AuthType.LOCAL
+    mock_history_manager.get_user.assert_called_once_with("test@example.com")
+
+def test_auth_flow_existing_oidc_user(mock_history_manager):
+    """Test that an existing user WITHOUT a password returns OIDC auth type."""
+    # Setup
+    mock_user = MagicMock()
+    mock_user.password_hash = None # No password implies OIDC
+    mock_history_manager.get_user.return_value = mock_user
+
+    # Execute
+    auth_type = get_user_auth_type("sso@example.com", mock_history_manager)
+
+    # Verify
+    assert auth_type == AuthType.OIDC
+    mock_history_manager.get_user.assert_called_once_with("sso@example.com")
+
+def test_auth_flow_new_user(mock_history_manager):
+    """Test that a non-existent user returns NEW auth type."""
+    # Setup
+    mock_history_manager.get_user.return_value = None
+
+    # Execute
+    auth_type = get_user_auth_type("new@example.com", mock_history_manager)
+
+    # Verify
+    assert auth_type == AuthType.NEW
+    mock_history_manager.get_user.assert_called_once_with("new@example.com")