fix(plugin): 万相3.0视频 - 修复上游响应错误解析

backend/internal/app/provider_error_test.go

@@ -1,6 +1,9 @@
 package app
 
-import "testing"
+import (
+	"strings"
+	"testing"
+)
 
 func TestProviderFailureDetailsReadsTopLevelModerationError(t *testing.T) {
 	code, message := providerFailureDetails(map[string]any{
@@ -59,3 +62,30 @@ func TestProviderPayloadBusinessFailureAcceptsStringSuccessCode(t *testing.T) {
 		t.Fatalf("success payload was marked failed: (%q, %q)", code, message)
 	}
 }
+
+func TestProviderPayloadBusinessFailureReadsNestedOutputFailure(t *testing.T) {
+	code, message, failed := providerPayloadBusinessFailure(map[string]any{
+		"output": map[string]any{
+			"code":        "InvalidParameter",
+			"message":     "Input should be '1080P', '720P' or '480P': parameters.resolution",
+			"task_id":     "e0d8c86d-4939-4f2e-93f7-e2cd10a07d58",
+			"task_status": "FAILED",
+		},
+		"request_id": "c3c98e67-830d-9f1d-8a62-fff019ffa522",
+	})
+	if !failed || code != "InvalidParameter" {
+		t.Fatalf("nested output failure = (%q, %q, %v)", code, message, failed)
+	}
+	if !strings.Contains(message, "parameters.resolution") {
+		t.Fatalf("unexpected message: %q", message)
+	}
+}
+
+func TestProviderPayloadBusinessFailureIgnoresPendingOutput(t *testing.T) {
+	if code, message, failed := providerPayloadBusinessFailure(map[string]any{
+		"output":     map[string]any{"task_id": "task-1", "task_status": "PENDING"},
+		"request_id": "req-1",
+	}); failed {
+		t.Fatalf("pending output marked failed: (%q, %q)", code, message)
+	}
+}