feat(project): move edge_inference_service contents to root and update paths

- Moved all project files and directories (config, core, models, etc.) from
  edge_inference_service/ to the repository root ai_edge/
- Updated model path in config/settings.py to reflect new structure
- Revised usage paths in __init__.py documentation

tests/test_tensorrt.py

@@ -0,0 +1,88 @@
+"""
+TensorRT模块单元测试
+"""
+
+import unittest
+from unittest.mock import MagicMock, patch
+import sys
+import os
+import numpy as np
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+
+class TestTensorRTEngine(unittest.TestCase):
+    """测试TensorRT引擎类"""
+    
+    def test_engine_creation(self):
+        """测试引擎创建"""
+        from core.tensorrt_engine import TensorRTEngine
+        from config.settings import InferenceConfig
+        
+        config = InferenceConfig(
+            model_path="./models/test.engine",
+            input_width=480,
+            input_height=480,
+            batch_size=1,
+            fp16_mode=True
+        )
+        
+        engine = TensorRTEngine(config)
+        
+        self.assertEqual(engine.config.input_width, 480)
+        self.assertEqual(engine.config.input_height, 480)
+        self.assertTrue(engine.config.fp16_mode)
+    
+    def test_performance_stats_initial(self):
+        """测试初始性能统计"""
+        from core.tensorrt_engine import TensorRTEngine
+        from config.settings import InferenceConfig
+        
+        config = InferenceConfig()
+        engine = TensorRTEngine(config)
+        
+        stats = engine.get_performance_stats()
+        
+        self.assertIn("inference_count", stats)
+        self.assertIn("total_inference_time_ms", stats)
+        self.assertEqual(stats["inference_count"], 0)
+    
+    def test_memory_usage(self):
+        """测试显存使用查询"""
+        from core.tensorrt_engine import TensorRTEngine
+        from config.settings import InferenceConfig
+        
+        config = InferenceConfig()
+        engine = TensorRTEngine(config)
+        
+        memory = engine.get_memory_usage()
+        
+        self.assertIn("total_mb", memory)
+        self.assertIn("used_mb", memory)
+        self.assertIn("free_mb", memory)
+
+
+class TestEngineManager(unittest.TestCase):
+    """测试引擎管理器"""
+    
+    def test_manager_creation(self):
+        """测试管理器创建"""
+        from core.tensorrt_engine import EngineManager
+        
+        manager = EngineManager()
+        
+        self.assertEqual(len(manager._engines), 0)
+    
+    def test_get_nonexistent_engine(self):
+        """测试获取不存在的引擎"""
+        from core.tensorrt_engine import EngineManager
+        
+        manager = EngineManager()
+        
+        engine = manager.get_engine("nonexistent")
+        
+        self.assertIsNone(engine)
+
+
+if __name__ == "__main__":
+    unittest.main()