Initial commit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/service/playletser/operate_random_test.go

@@ -0,0 +1,46 @@
+package playletser
+
+import (
+	"reflect"
+	"testing"
+	"time"
+	"videoweb/pub/models/playletmod"
+
+	"go.mongodb.org/mongo-driver/bson"
+)
+
+func TestOperateListFiltersAndSorts(t *testing.T) {
+	for _, typ := range []int64{operateListLatest, operateListHot, operateListOriginal, operateListRandom} {
+		filter := operateListFilter(typ)
+		if filter[playletmod.FN.Playlet.Status] != playletmod.StatusUp {
+			t.Fatalf("type %d must contain the up status filter", typ)
+		}
+		_, recommend := filter[playletmod.FN.Playlet.IsRecommend]
+		if recommend != (typ == operateListOriginal) {
+			t.Fatalf("type %d recommend filter = %v", typ, recommend)
+		}
+	}
+	if got := operateListSort(operateListLatest)[0].Key; got != playletmod.FN.Playlet.UpdatedAt {
+		t.Fatalf("latest sort = %s", got)
+	}
+	if got := operateListSort(operateListHot)[0].Key; got != playletmod.FN.Playlet.HeatValue {
+		t.Fatalf("hot sort = %s", got)
+	}
+}
+
+func TestOperateRandomPipelineIsStableWithinDay(t *testing.T) {
+	filter := bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp}
+	day := time.Date(2026, 10, 24, 1, 0, 0, 0, time.UTC)
+	first := operateRandomPipeline(filter, 20, 10, day)
+	second := operateRandomPipeline(filter, 20, 10, day.Add(time.Hour))
+	if !reflect.DeepEqual(first, second) {
+		t.Fatal("random order changed within one China Standard Time day")
+	}
+	third := operateRandomPipeline(filter, 20, 10, day.Add(24*time.Hour))
+	if reflect.DeepEqual(first, third) {
+		t.Fatal("random order did not change on the next China Standard Time day")
+	}
+	if first[4]["$skip"] != int64(20) || first[5]["$limit"] != int64(10) {
+		t.Fatalf("pagination stages = %v", first)
+	}
+}