GODT-1932: frontend is instantiated before bridge.

WIP: introduced frontend.Type.
WIP: frontend is create before bridge is instantiated.
WIP: filtering of internet stastus event in gRPC event queue.

internal/frontend/grpc/config_test.go

@@ -1,55 +0,0 @@
-// 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 grpc
-
-import (
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-const (
-	dummyPort    = 12
-	dummyCert    = "A dummy cert"
-	dummyToken   = "A dummy token"
-	tempFileName = "test.json"
-)
-
-func TestConfig(t *testing.T) {
-	conf1 := config{
-		Port:  dummyPort,
-		Cert:  dummyCert,
-		Token: dummyToken,
-	}
-
-	// Read-back test
-	tempDir := t.TempDir()
-	tempFilePath := filepath.Join(tempDir, tempFileName)
-	require.NoError(t, conf1.save(tempFilePath))
-
-	conf2 := config{}
-	require.NoError(t, conf2.load(tempFilePath))
-	require.Equal(t, conf1, conf2)
-
-	// failure to load
-	require.Error(t, conf2.load(tempFilePath+"_"))
-
-	// failure to save
-	require.Error(t, conf2.save(filepath.Join(tempDir, "non/existing/folder", tempFileName)))
-}