879   std::pair<grpc::string, grpc::string> meta1("key1", "val1");  in TEST_P()  local
882   cli_ctx.AddMetadata(meta1.first, meta1.second);  in TEST_P()
895   EXPECT_EQ(meta1.second,  in TEST_P()
896             ToString(client_initial_metadata.find(meta1.first)->second));  in TEST_P()
925   std::pair<grpc::string, grpc::string> meta1("key1", "val1");  in TEST_P()  local
936   srv_ctx.AddInitialMetadata(meta1.first, meta1.second);  in TEST_P()
941   EXPECT_EQ(meta1.second,  in TEST_P()
942             ToString(server_initial_metadata.find(meta1.first)->second));  in TEST_P()
970   std::pair<grpc::string, grpc::string> meta1("key1", "val1");  in TEST_P()  local
985   srv_ctx.AddTrailingMetadata(meta1.first, meta1.second);  in TEST_P()
994   EXPECT_EQ(meta1.second,  in TEST_P()
995             ToString(server_trailing_metadata.find(meta1.first)->second));  in TEST_P()
1015   std::pair<grpc::string, grpc::string> meta1("key1", "val1");  in TEST_P()  local
1030   cli_ctx.AddMetadata(meta1.first, meta1.second);  in TEST_P()
1042   EXPECT_EQ(meta1.second,  in TEST_P()
1043             ToString(client_initial_metadata.find(meta1.first)->second));  in TEST_P()