diff --git a/pb/plugin/v3/plugin_grpc_test.go b/pb/plugin/v3/plugin_grpc_test.go
new file mode 100644
index 0000000..ec43752
--- /dev/null
+++ b/pb/plugin/v3/plugin_grpc_test.go
@@ -0,0 +1,16 @@
+package plugin //nolint:revive // var-naming: package name conflicts with standard library but is appropriate for this context
+
+import (
+	"context"
+	"testing"
+
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestUnimplementedAssessTables(t *testing.T) {
+	_, err := UnimplementedPluginServer{}.AssessTables(context.Background(), &AssessTables_Request{})
+	if status.Code(err) != codes.Unimplemented {
+		t.Errorf("expected %v, got %v", codes.Unimplemented, err)
+	}
+}