Refactor: Move backend files to backend/ directory and split .gitignore

backend/tests/api/test_utils.py

@@ -0,0 +1,51 @@
+from datetime import timedelta
+from ea_chatbot.api.utils import create_access_token, decode_access_token, convert_to_json_compatible
+from langchain_core.messages import AIMessage
+
+def test_create_and_decode_access_token():
+    """Test that a token can be created and then decoded."""
+    data = {"sub": "test@example.com", "user_id": "123"}
+    token = create_access_token(data)
+    
+    decoded = decode_access_token(token)
+    assert decoded["sub"] == data["sub"]
+    assert decoded["user_id"] == data["user_id"]
+    assert "exp" in decoded
+
+def test_decode_invalid_token():
+    """Test that an invalid token returns None."""
+    assert decode_access_token("invalid-token") is None
+
+def test_expired_token():
+    """Test that an expired token returns None."""
+    data = {"sub": "test@example.com"}
+    # Create a token that expired 1 minute ago
+    token = create_access_token(data, expires_delta=timedelta(minutes=-1))
+    
+    assert decode_access_token(token) is None
+
+def test_convert_to_json_compatible_complex_message():
+    """Test that list-based message content is handled correctly."""
+    # Mock a message with list-based content (blocks)
+    msg = AIMessage(content=[
+        {"type": "text", "text": "Hello "},
+        {"type": "text", "text": "world!"},
+        {"type": "other", "data": "ignore me"}
+    ])
+    
+    result = convert_to_json_compatible(msg)
+    assert result["content"] == "Hello world!"
+    assert result["type"] == "ai"
+
+def test_convert_to_json_compatible_message_with_text_prop():
+    """Test that .text property is prioritized if available."""
+    # Using a MagicMock to simulate the property safely
+    from unittest.mock import MagicMock
+    msg = MagicMock(spec=AIMessage)
+    msg.content = "Raw content"
+    msg.text = "Just the text"
+    msg.type = "ai"
+    msg.additional_kwargs = {}
+    
+    result = convert_to_json_compatible(msg)
+    assert result["content"] == "Just the text"