Added constants for app name and version, use custom user-agent

internal/version/version_test.go

@@ -0,0 +1,30 @@
+/*
+Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
+
+Scotty 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.
+
+Scotty 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
+Scotty. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+package version_test
+
+import (
+	"testing"
+
+	"go.uploadedlobster.com/scotty/internal/version"
+)
+
+func TestUserAgent(t *testing.T) {
+	expected := "scotty/" + version.AppVersion
+	ua := version.UserAgent()
+	if ua != expected {
+		t.Errorf("Expected UserAgent to be '%v', got '%v'", expected, ua)
+	}
+}