Maint: common GetProtocol for OpenVPN+Wireguard providers

internal/provider/utils/protocol_test.go

@@ -0,0 +1,54 @@
+package utils
+
+import (
+	"testing"
+
+	"github.com/qdm12/gluetun/internal/configuration"
+	"github.com/qdm12/gluetun/internal/constants"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_GetProtocol(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		selection configuration.ServerSelection
+		protocol  string
+	}{
+		"default": {
+			protocol: constants.UDP,
+		},
+		"OpenVPN UDP": {
+			selection: configuration.ServerSelection{
+				VPN: constants.OpenVPN,
+			},
+			protocol: constants.UDP,
+		},
+		"OpenVPN TCP": {
+			selection: configuration.ServerSelection{
+				VPN: constants.OpenVPN,
+				OpenVPN: configuration.OpenVPNSelection{
+					TCP: true,
+				},
+			},
+			protocol: constants.TCP,
+		},
+		"Wireguard": {
+			selection: configuration.ServerSelection{
+				VPN: constants.Wireguard,
+			},
+			protocol: constants.UDP,
+		},
+	}
+
+	for name, testCase := range testCases {
+		testCase := testCase
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			protocol := GetProtocol(testCase.selection)
+
+			assert.Equal(t, testCase.protocol, protocol)
+		})
+	}
+}