Added tests to the main package and completely reworked the code around that

zabbix/statefile.go

@@ -0,0 +1,34 @@
+package zabbix
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+const (
+	bareosStateFile = "bareos-fd.9102.state"
+	baculaStateFile = "bacula-fd.9102.state"
+)
+
+func checkStateFile() error {
+	// Finds the state file to parse
+	if stateFileName != "" {
+		stateFileName = filepath.Join(workDir, stateFileName)
+		info, err := os.Stat(stateFileName)
+		if os.IsNotExist(err) || info.IsDir() {
+			return fmt.Errorf("The state file %s does not exist", stateFileName)
+		}
+	} else {
+		stateFileName = filepath.Join(workDir, bareosStateFile)
+		info, err := os.Stat(stateFileName)
+		if os.IsNotExist(err) || info.IsDir() {
+			stateFileName = filepath.Join(workDir, baculaStateFile)
+			info, err = os.Stat(stateFileName)
+			if os.IsNotExist(err) || info.IsDir() {
+				return fmt.Errorf("Could not find a suitable state file. Has a job ever run?")
+			}
+		}
+	}
+	return nil
+}