Fix stock news scrolling in test environment: - Optimize display manager settings for smooth scrolling - Add proper display initialization and cleanup in test script - Implement timing control to prevent display buffer overflow - Ensure consistent 1ms delay between updates for smooth scrolling

config/config.json

@@ -57,7 +57,7 @@
         "enabled": true,
         "update_interval": 300,
         "scroll_speed": 1,
-        "scroll_delay": 0.0001,
+        "scroll_delay": 0.001,
         "max_headlines_per_symbol": 1,
         "headlines_per_rotation": 2
     }

test_stock_news_manager.py

@@ -10,6 +10,7 @@ print(f"Current working directory: {os.getcwd()}")
 
 def main():
     """Test the StockNewsManager class directly."""
+    display_manager = None
     try:
         # Load configuration
         config_manager = ConfigManager()
@@ -27,14 +28,27 @@ def main():
         # Initialize display manager
         display_manager = DisplayManager(display_config)
         
+        # Clear the display and show a test pattern
+        display_manager.clear()
+        display_manager.update_display()
+        time.sleep(1)  # Give time to see the test pattern
+        
         # Initialize news manager with the loaded config
         news_manager = StockNewsManager(config, display_manager)
         
         print("Testing news display. Press Ctrl+C to exit.")
         
-        # Run the news display in a loop
+        # Run the news display in a loop with proper timing
+        last_update = time.time()
         while True:
+            current_time = time.time()
+            # Ensure we're not updating too frequently
+            if current_time - last_update >= 0.001:  # 1ms minimum between updates
                 news_manager.display_news()
+                last_update = current_time
+            else:
+                # Small sleep to prevent CPU hogging
+                time.sleep(0.0001)
             
     except KeyboardInterrupt:
         print("\nTest interrupted by user")
@@ -43,6 +57,11 @@ def main():
         import traceback
         traceback.print_exc()
     finally:
+        if display_manager:
+            # Clear the display before exiting
+            display_manager.clear()
+            display_manager.update_display()
+            display_manager.cleanup()
         print("Test completed")
 
 if __name__ == "__main__":