moved example to example func in tests

cmd/gocert/main.go

@@ -1,19 +1,5 @@
 package main
 
-import (
-	"fmt"
-
-	"github.com/canonical/gocert/internal/certdb"
-)
-
-var db *certdb.CertificateRequests
-
 func main() {
-	db = new(certdb.CertificateRequests)
-	if err := db.Connect("./certs.db", "CertificateReq"); err != nil {
-		fmt.Println(err)
-	}
-	defer db.Disconnect()
-
 	// ListenAndServe
 }

internal/certdb/certdb_test.go

@@ -1,6 +1,7 @@
 package certdb_test
 
 import (
+	"log"
 	"strings"
 	"testing"
 
@@ -106,3 +107,11 @@ func TestRetrieve(t *testing.T) {
 	}
 
 }
+
+func ExampleConnection() {
+	db := new(certdb.CertificateRequests)
+	if err := db.Connect("./certs.db", "CertificateReq"); err != nil {
+		log.Fatalln(err)
+	}
+	defer db.Disconnect()
+}