Fix panic edge-case in report command

Author: jotaen

klog/app/cli/report.go

@@ -30,11 +30,11 @@ func (opt *Report) Run(ctx app.Context) error {
 	if err != nil {
 		return err
 	}
+	now := ctx.Now()
+	records = opt.ApplyFilter(now, records)
 	if len(records) == 0 {
 		return nil
 	}
-	now := ctx.Now()
-	records = opt.ApplyFilter(now, records)
 	records, nErr := opt.ApplyNow(now, records...)
 	if nErr != nil {
 		return nErr

klog/app/cli/report_test.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"github.com/jotaen/klog/klog"
 	"github.com/jotaen/klog/klog/app/cli/lib"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -13,6 +14,18 @@ func TestReportOfEmptyInput(t *testing.T) {
 	assert.Equal(t, "", state.printBuffer)
 }
 
+func TestReportOfEmptyFilteredData(t *testing.T) {
+	state, err := NewTestingContext()._SetRecords(`
+2022-10-30
+	8h
+`)._Run((&Report{
+		FilterArgs: lib.FilterArgs{Date: klog.Ɀ_Date_(2022, 10, 31)},
+		Fill:       true,
+	}).Run)
+	require.Nil(t, err)
+	assert.Equal(t, "", state.printBuffer)
+}
+
 func TestDayReportOfRecords(t *testing.T) {
 	/*
 		Aspects tested: