add per_rpc_creds test case in interop test

1 files changed, 3 insertions, 0 deletions

diff --git a/test/cpp/interop/interop_client.h b/test/cpp/interop/interop_client.h
index 67eecd9ccc..bf8188325e 100644
--- a/test/cpp/interop/interop_client.h
+++ b/test/cpp/interop/interop_client.h
@@ -71,6 +71,9 @@ class InteropClient {
   // username is a string containing the user email
   void DoOauth2AuthToken(const grpc::string& username,
                          const grpc::string& oauth_scope);
+  // username is a string containing the user email
+  void DoPerRpcCreds(const grpc::string& username,
+                     const grpc::string& oauth_scope);
 
  private:
   void PerformLargeUnary(SimpleRequest* request, SimpleResponse* response);