mexc interface integrations REST API fixes

test_symbol_conversion.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+"""
+Test MEXC Symbol Conversion
+Verify that USDT symbols are properly converted to USDC for MEXC execution
+"""
+
+import sys
+from pathlib import Path
+
+# Add project root to path
+project_root = Path(__file__).parent
+sys.path.insert(0, str(project_root))
+
+from NN.exchanges.mexc_interface import MEXCInterface
+
+def test_symbol_conversion():
+    """Test the symbol conversion logic"""
+    print("Testing MEXC Symbol Conversion...")
+    print("=" * 50)
+    
+    # Create MEXC interface (no need for real API keys for symbol conversion)
+    mexc = MEXCInterface(api_key="dummy", api_secret="dummy", test_mode=True)
+    
+    # Test cases
+    test_symbols = [
+        "ETH/USDT",
+        "BTC/USDT", 
+        "ETHUSDT",
+        "BTCUSDT",
+        "ETH/USDC",  # Should stay as USDC
+        "ETHUSDC"    # Should stay as USDC
+    ]
+    
+    print("Symbol Conversion Results:")
+    print("-" * 30)
+    
+    for symbol in test_symbols:
+        converted = mexc._format_spot_symbol(symbol)
+        print(f"{symbol:12} -> {converted}")
+    
+    print("\nExpected Results for MEXC Trading:")
+    print("- ETH/USDT should become ETHUSDC")
+    print("- BTC/USDT should become BTCUSDC") 
+    print("- ETHUSDT should become ETHUSDC")
+    print("- BTCUSDT should become BTCUSDC")
+    print("- ETH/USDC should stay ETHUSDC")
+    print("- ETHUSDC should stay ETHUSDC")
+
+if __name__ == "__main__":
+    test_symbol_conversion()