Add gRPC tests

Those tests live in a separate Go module so that people will not depend
on gRPC libraries unintentionally.

1 files changed, 18 insertions, 0 deletions

diff --git a/grpc_testing/echo.proto b/grpc_testing/echo.proto
new file mode 100644
index 0000000..9b1ffff
--- /dev/null
+++ b/grpc_testing/echo.proto
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: CC0-1.0
+
+syntax = "proto3";
+
+package grpc_testing;
+option go_package = "grpc_testing/";
+
+service Echo {
+  rpc Echo(EchoRequest) returns (EchoResponse);
+}
+
+message EchoRequest {
+  string message = 1;
+}
+
+message EchoResponse {
+  string message = 1;
+}