cron filters give a warning when theres an error in var1

scraping.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/andybalholm/cascadia"
 	"github.com/antchfx/htmlquery"
+	"github.com/robfig/cron/v3"
 	"github.com/tidwall/gjson"
 	lualibs "github.com/vadv/gopher-lua-libs"
 	lua "github.com/yuin/gopher-lua"
@@ -72,6 +73,7 @@ func processFilters(filters []Filter, web *Web, watch *Watch, debug bool, schedu
 			}
 			if debug && filter.Type == "cron" {
 				processedMap[filter.ID] = true
+				getCronDebugResult(filter)
 				continue
 			}
 			if len(filter.Parents) == 0 && !debug {
@@ -850,6 +852,13 @@ func triggerSchedule(watchID uint, web *Web, scheduleID *uint) {
 	processFilters(filters, web, watch, false, scheduleID)
 }
 
+func getCronDebugResult(filter *Filter) {
+	_, err := cron.ParseStandard(filter.Var1)
+	if err != nil {
+		filter.log(err)
+	}
+}
+
 func getFilterResultLua(filter *Filter) {
 	L := lua.NewState()
 	defer L.Close()

todo.md

@@ -11,5 +11,4 @@
 - log things to db for cron runs 
 - comments
 - db prune job
-- add var1 parsing test for cron jobs
 - add full buildFilterTree/processFilters test