check stderr before reporting back error 1

systemctl_test.go

@@ -0,0 +1,28 @@
+package systemctl
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func TestEnableNonexistant(t *testing.T) {
+	unit := "nonexistant"
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+	err := Enable(ctx, unit, true)
+	if err != ErrDoesNotExist {
+		t.Errorf("error is %v, but should have been %v", err, ErrDoesNotExist)
+	}
+
+}
+func TestEnableNoPermissions(t *testing.T) {
+	unit := "nginx"
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+	err := Enable(ctx, unit, false)
+	if err != ErrInsufficientPermissions {
+		t.Errorf("error is %v, but should have been %v", err, ErrInsufficientPermissions)
+	}
+
+}