fix: ensure Key is defined in engine.py and use create=True in mock patches for CI compatibility

Author: devsebastian44

src/core/engine.py

@@ -1,11 +1,8 @@
 try:
     from pynput.keyboard import Key, Listener
-except ImportError:
-    msg = (
-        "[ERROR] 'pynput' no está instalado. "
-        "Instálalo con 'pip install pynput'"
-    )
-    print(msg)
+except (ImportError, Exception):
+    # En entornos sin GUI (como algunos CI), pynput puede fallar al importar
+    Key = None
     Listener = None
 
 
@@ -37,13 +34,14 @@ def on_press(self, key):
         print(f"[Captured] {k}")
 
     def on_release(self, key):
-        if key == Key.esc:
+        if not Key or key == Key.esc:
             # Detener el listener con la tecla ESC
-            print("[*] Deteniendo captura (ESC presionado)...")
+            print("[*] Deteniendo captura (ESC o entorno sin soporte)...")
             return False
 
     def start(self):
         if not Listener:
+            print("[!] Listener no disponible en este entorno.")
             return
 
         msg = f"[*] Iniciando escucha... Logs en: {self.output_file}"

tests/test_core.py

@@ -7,8 +7,9 @@
 # Mocking Listener and Key from pynput
 @pytest.fixture
 def mock_pynput():
-    with patch('src.core.engine.Listener') as mock_listener, \
-         patch('src.core.engine.Key') as mock_key:
+    # Usamos create=True por si pynput no se pudo importar en el entorno de test
+    with patch('src.core.engine.Listener', create=True) as mock_listener, \
+         patch('src.core.engine.Key', create=True) as mock_key:
         yield mock_listener, mock_key
 
 
@@ -43,7 +44,7 @@ def test_engine_on_release_esc(mock_pynput):
     assert result is False
 
 
-@patch('src.core.engine.Listener')
+@patch('src.core.engine.Listener', create=True)
 def test_engine_start_calls_listener(mock_listener):
     """Verifica que engine.start() inicie el Listener."""
     engine = RealEngine()