Method TestUnsupportedCodecOnServer

encoding/encoding_test.go:384–402

Tests the case where the client uses a codec (one that uses proto encoding but uses a different content-subtype name) that the server does not support. Verifies that the server falls back to the proto codec and that the client can successfully make RPCs. TODO(https://github.com/grpc/grpc-go/issues/

(t *testing.T)

// variable to change the behavior on the server to reject unsupported codecs,
// we should modify this test to verify that the RPC fails in that case.
func (s) TestUnsupportedCodecOnServer(t *testing.T) {
	backend := stubserver.StartTestService(t, nil)
	defer backend.Stop()

	cc, err := grpc.NewClient(backend.Address, grpc.WithTransportCredentials(insecure.NewCredentials()))
	if err != nil {
		t.Fatalf("Failed to dial test backend at %q: %v", backend.Address, err)
	}
	defer cc.Close()

	ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
	defer cancel()

	codec := &renameProtoCodec{CodecV2: encoding.GetCodecV2(proto.Name), name: t.Name()}
	client := testgrpc.NewTestServiceClient(cc)
	if _, err := client.EmptyCall(ctx, &testpb.Empty{}, grpc.ForceCodecV2(codec)); err != nil {
		t.Fatalf("ss.Client.EmptyCall(_, _) = _, %v; want _, nil", err)
	}
}