start implementation on new architecture

test/stop_command_test.py

@@ -0,0 +1,45 @@
+import unittest
+from datetime import datetime
+import time
+
+from sia.working_memory import WorkingMemory
+from sia.stop_command import StopCommand
+from sia.reasoning_entry import ReasoningEntry
+from sia.background_entry import BackgroundEntry
+
+class StopCommandTest(unittest.TestCase):
+    def setUp(self):
+        """Set up test cases with a fresh working memory"""
+        self.memory = WorkingMemory()
+        self.test_timestamp = datetime(2024, 10, 31, 12, 0, 0)
+        
+    def test_stop_command_cleanup(self):
+        """Test stop command cleans up and removes all entries"""
+        # Add a mix of entry types including a background process
+        entries = [
+            ReasoningEntry("test content", "id-1", self.test_timestamp),
+            BackgroundEntry("sleep 10", "id-2", self.test_timestamp)
+        ]
+        
+        for entry in entries:
+            self.memory.add_entry(entry)
+            
+        # Start the background process
+        background_entry = self.memory.get_entry("id-2")
+        background_entry.update()
+        self.assertIsNotNone(background_entry.process)
+        process_pid = background_entry.process.pid
+        
+        # Execute stop command
+        command = StopCommand()
+        result = command.execute(self.memory)
+        
+        # Verify all entries removed
+        self.assertTrue(result.should_stop)
+        self.assertEqual(self.memory.get_entries_count(), 0)
+        
+        # Verify background process was terminated
+        time.sleep(0.1)  # Give process time to terminate
+        with self.assertRaises(ProcessLookupError):
+            import os
+            os.kill(process_pid, 0)