Added tests to the spool package, and reworked the code around that.

spool/serialize.go

@@ -0,0 +1,20 @@
+package spool
+
+import (
+	"bareos-zabbix-check/job"
+	"encoding/csv"
+	"fmt"
+	"io"
+)
+
+// Serialize writes a spool on the disk
+func Serialize(handle io.Writer, jobs []job.Job) error {
+	lines := make([][]string, len(jobs))
+	for i := 0; i < len(jobs); i++ {
+		job := jobs[i]
+		lines[i] = make([]string, 2)
+		lines[i][0] = job.Name
+		lines[i][1] = fmt.Sprintf("%d", job.Timestamp)
+	}
+	return csv.NewWriter(handle).WriteAll(lines)
+}