Add the task service. Ready to tidy the go modules.

code/test/cron_test.go

@@ -0,0 +1,18 @@
+package test
+
+import (
+	"github.com/robfig/cron/v3"
+	"testing"
+)
+
+func TestValidateCron(t *testing.T) {
+
+	spec := "*/1 * * * * ?"
+	_, err := cron.Parse(spec)
+	if err != nil {
+		t.Error(err)
+	} else {
+		t.Logf("%s passed\n", spec)
+	}
+
+}