优化

优化

internal/service/cloud115/url_cache_test.go

@@ -0,0 +1,31 @@
+package cloud115
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDownloadURLCache(t *testing.T) {
+	urlCacheMu.Lock()
+	urlCache = map[string]urlCacheEntry{}
+	urlCacheMu.Unlock()
+
+	if got := GetDownloadURLCache("pick1"); got != "" {
+		t.Fatalf("empty cache should return empty, got %q", got)
+	}
+	SetDownloadURLCache("pick1", "http://cdn/1")
+	if got := GetDownloadURLCache("pick1"); got != "http://cdn/1" {
+		t.Fatalf("cache miss, got %q", got)
+	}
+	// 过期条目按未命中处理
+	urlCacheMu.Lock()
+	urlCache["pick1"] = urlCacheEntry{url: "http://cdn/old", expiresAt: time.Now().Add(-time.Second)}
+	urlCacheMu.Unlock()
+	if got := GetDownloadURLCache("pick1"); got != "" {
+		t.Fatalf("expired entry should be a miss, got %q", got)
+	}
+	ClearDownloadURLCache("pick1")
+	if got := GetDownloadURLCache("pick1"); got != "" {
+		t.Fatalf("cleared entry should be a miss, got %q", got)
+	}
+}