fix: correct token calculation error caused by ctxcache init (#559)

backend/api/handler/coze/workflow_service_test.go

@@ -32,6 +32,7 @@ import (
 
 	"github.com/alicebob/miniredis/v2"
 	"github.com/bytedance/mockey"
+	"github.com/cloudwego/eino/callbacks"
 	model2 "github.com/cloudwego/eino/components/model"
 	"github.com/cloudwego/eino/schema"
 	"github.com/cloudwego/hertz/pkg/app"
@@ -102,6 +103,11 @@ import (
 	"github.com/coze-dev/coze-studio/backend/types/errno"
 )
 
+func TestMain(m *testing.M) {
+	callbacks.AppendGlobalHandlers(service.GetTokenCallbackHandler())
+	os.Exit(m.Run())
+}
+
 type wfTestRunner struct {
 	t           *testing.T
 	h           *server.Hertz