Apply fixture-kit mode to MMMUVLMMixin (#15615)

python/sglang/srt/environ.py

@@ -6,6 +6,29 @@ from enum import IntEnum
 from typing import Any
 
 
+@contextmanager
+def temp_set_env(**env_vars: dict[str, Any]):
+    """Temporarily set non-sglang environment variables, e.g. OPENAI_API_KEY"""
+    for key in env_vars:
+        if key.startswith("SGLANG_") or key.startswith("SGL_"):
+            raise ValueError("temp_set_env should not be used for sglang env vars")
+
+    backup = {key: os.environ.get(key) for key in env_vars}
+    try:
+        for key, value in env_vars.items():
+            if value is None:
+                os.environ.pop(key, None)
+            else:
+                os.environ[key] = str(value)
+        yield
+    finally:
+        for key, value in backup.items():
+            if value is None:
+                os.environ.pop(key, None)
+            else:
+                os.environ[key] = value
+
+
 class EnvField:
     _allow_set_name = True