Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/service/vidser/module_refresh_test.go

@@ -0,0 +1,55 @@
+package vidser
+
+import (
+	"reflect"
+	"testing"
+
+	"91porn-server/models/v/vidmod"
+
+	"go.mongodb.org/mongo-driver/bson/primitive"
+)
+
+func TestDeterministicOrderVideos(t *testing.T) {
+	source := []*vidmod.VideoModel{
+		{ID: primitive.NewObjectID()},
+		{ID: primitive.NewObjectID()},
+		{ID: primitive.NewObjectID()},
+		{ID: primitive.NewObjectID()},
+	}
+	first := append([]*vidmod.VideoModel(nil), source...)
+	retry := append([]*vidmod.VideoModel(nil), source...)
+	deterministicOrderVideos(first, "module:token-a")
+	deterministicOrderVideos(retry, "module:token-a")
+	if !reflect.DeepEqual(videoIDs(first), videoIDs(retry)) {
+		t.Fatal("same refresh token must return the same order")
+	}
+}
+
+func TestHasNextRefreshCandidate(t *testing.T) {
+	tests := []struct {
+		name           string
+		candidateCount int
+		returnedCount  int
+		want           bool
+	}{
+		{name: "candidate pool has remaining videos", candidateCount: 30, returnedCount: 20, want: true},
+		{name: "candidate pool exactly fits response", candidateCount: 20, returnedCount: 20, want: false},
+		{name: "candidate pool is smaller than page size", candidateCount: 12, returnedCount: 12, want: false},
+		{name: "empty candidate pool", candidateCount: 0, returnedCount: 0, want: false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := hasNextRefreshCandidate(tt.candidateCount, tt.returnedCount); got != tt.want {
+				t.Fatalf("hasNextRefreshCandidate(%d, %d) = %t, want %t", tt.candidateCount, tt.returnedCount, got, tt.want)
+			}
+		})
+	}
+}
+
+func videoIDs(videos []*vidmod.VideoModel) []primitive.ObjectID {
+	ids := make([]primitive.ObjectID, len(videos))
+	for i := range videos {
+		ids[i] = videos[i].ID
+	}
+	return ids
+}