[tests] Add API test suite

tests-api/test_import.py

@@ -0,0 +1,23 @@
+import os
+import sys
+
+# Print current working directory
+print(f"Current directory: {os.getcwd()}")
+
+# Print module search path
+print(f"System path: {sys.path}")
+
+# Try to import
+try:
+    from utils.validation import load_openapi_spec
+    print("Import successful!")
+except ImportError as e:
+    print(f"Import error: {e}")
+    
+    # Try direct import
+    try:
+        sys.path.insert(0, os.path.join(os.getcwd(), "custom_nodes/ComfyUI-Manager/tests-api"))
+        from utils.validation import load_openapi_spec
+        print("Direct import successful!")
+    except ImportError as e:
+        print(f"Direct import error: {e}")