diff --git a/src/main.ts b/src/main.ts
index a2e621d..d528202 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -57,7 +57,7 @@ export {
 } from './v1';
 
 // V2 Exports
-export { WrappedV2Function } from './v2';
+export { WrappedV2Function, mockSecretManager } from './v2';
 
 export function wrap<T>(
   cloudFunction: HttpsFunction & Runnable<T>
diff --git a/src/v2.ts b/src/v2.ts
index e3fef18..2902aac 100644
--- a/src/v2.ts
+++ b/src/v2.ts
@@ -93,3 +93,10 @@ export function wrapV2<T extends CloudEvent<unknown>>(
     return cloudFunction.run(cloudEvent);
   };
 }
+
+/** Mock values returned by `functions.config()`. */
+export function mockSecretManager(conf: { [key: string]: any }) {
+  for (const [key, value] of Object.entries(conf)) {
+    process.env[key] = value;
+  }
+}