fix(video): 创作台视频 - 修正同步音频参数与万有引力结果下载地址 (#554)

Original-Commit: e85e78fb898be7ef1fcd2027b62ab43c00dfaa2c
fix(video): 创作台视频 - 修正同步音频参数与万有引力结果下载地址

backend/internal/protocol/lxmone_video_test.go

@@ -0,0 +1,51 @@
+package protocol
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+)
+
+func TestOfficialLxmoneVideoResultURLs(t *testing.T) {
+	providers := []string{
+		"lxmone-wan-videos", "lxmone-wan-channel-s", "lxmone-seedance-videos", "lxmone-h3-max-videos",
+		"lxmone-sd-videos", "lxmone-sd-mini-videos", "lxmone-grok-videos", "lxmone-h3-workflow",
+	}
+	const directURL = "https://cdn.example.com/generated.mp4?signature=test"
+	for _, provider := range providers {
+		t.Run(provider, func(t *testing.T) {
+			adapter := officialPackageAdapter(t, "lxmone-video-suite.yingce-plugin", provider)
+			for _, tc := range []struct {
+				name    string
+				payload map[string]any
+			}{
+				{"direct_over_relative", map[string]any{"id": "video-test", "status": "completed", "metadata": map[string]any{"url": "/v1/videos/video-test/content", "direct_url": directURL}}},
+				{"nested_direct_over_relative", map[string]any{"metadata": map[string]any{"url": "/v1/videos/video-test/content"}, "data": map[string]any{"id": "video-test", "status": "completed", "metadata": map[string]any{"url": "/v1/videos/video-test/content", "direct_url": directURL}}}},
+				{"absolute_url_without_direct", map[string]any{"id": "video-test", "status": "completed", "metadata": map[string]any{"url": directURL}}},
+			} {
+				t.Run(tc.name, func(t *testing.T) {
+					body, err := json.Marshal(tc.payload)
+					if err != nil {
+						t.Fatal(err)
+					}
+					created, err := adapter.ParseCreate(context.Background(), body)
+					if err != nil {
+						t.Fatal(err)
+					}
+					polled, err := adapter.ParsePoll(context.Background(), PollContext{TaskID: "video-test"}, body)
+					if err != nil {
+						t.Fatal(err)
+					}
+					if created.Status != StatusSucceeded || polled.Status != StatusSucceeded || created.TaskID != "video-test" || polled.TaskID != "video-test" {
+						t.Fatalf("unexpected completion: create=%#v poll=%#v", created, polled)
+					}
+					for _, result := range []*Result{created.Result, polled.Result} {
+						if result == nil || len(result.Videos) != 1 || result.Videos[0].URL != directURL {
+							t.Fatalf("expected direct download URL, got %#v", result)
+						}
+					}
+				})
+			}
+		})
+	}
+}