fix media organize and subscription workflows

internal/service/discover_section_cache_test.go

@@ -0,0 +1,44 @@
+package service
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDiscoverSectionCacheReturnsClone(t *testing.T) {
+	cache := NewDiscoverSectionCache(time.Hour)
+	cache.Set("douban_hot_movie", 1, []ExternalMediaResult{{
+		Title:            "第一部",
+		SubscribeAliases: []string{"别名"},
+		MissingEpisodes:  []int{1},
+		Languages:        []string{"zh"},
+	}})
+
+	got, ok := cache.Get("douban_hot_movie", 1)
+	if !ok || len(got) != 1 || got[0].Title != "第一部" {
+		t.Fatalf("cached section = %#v, %v", got, ok)
+	}
+
+	got[0].Title = "被修改"
+	got[0].SubscribeAliases[0] = "别名被改"
+	got[0].MissingEpisodes[0] = 9
+	got[0].Languages[0] = "en"
+	again, ok := cache.Get("douban_hot_movie", 1)
+	if !ok ||
+		again[0].Title != "第一部" ||
+		again[0].SubscribeAliases[0] != "别名" ||
+		again[0].MissingEpisodes[0] != 1 ||
+		again[0].Languages[0] != "zh" {
+		t.Fatalf("cache should return a clone, got %#v", again)
+	}
+}
+
+func TestDiscoverSectionCacheExpires(t *testing.T) {
+	cache := NewDiscoverSectionCache(time.Nanosecond)
+	cache.Set("tmdb_latest_movie", 1, []ExternalMediaResult{{Title: "旧数据"}})
+	time.Sleep(time.Millisecond)
+
+	if got, ok := cache.Get("tmdb_latest_movie", 1); ok || len(got) != 0 {
+		t.Fatalf("expired cache should miss, got %#v", got)
+	}
+}