Other: Simple gRPC client/server under test

tests/frontend_test.go

@@ -0,0 +1,38 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package tests
+
+import (
+	"context"
+	"fmt"
+
+	"google.golang.org/protobuf/types/known/emptypb"
+)
+
+func (s *scenario) frontendSeesThatBridgeIsVersion(version string) error {
+	res, err := s.t.client.Version(context.Background(), &emptypb.Empty{})
+	if err != nil {
+		return err
+	}
+
+	if version != res.GetValue() {
+		return fmt.Errorf("expected version %s, got %s", version, res.GetValue())
+	}
+
+	return nil
+}