优化结构

internal/service/department_test.go

@@ -1,16 +1,15 @@
 package service
 
 import (
+	"kra/internal/biz/system"
 	"testing"
-
-	"kra/internal/biz"
 )
 
 func TestDepartmentResponsePreservesNilAndEmptyChildren(t *testing.T) {
-	if got := departmentResponse(&biz.Department{}).Children; got != nil {
+	if got := departmentResponse(&system.Department{}).Children; got != nil {
 		t.Fatalf("single/search department children = %#v, want nil", got)
 	}
-	if got := departmentResponse(&biz.Department{Children: []*biz.Department{}}).Children; got == nil || len(got) != 0 {
+	if got := departmentResponse(&system.Department{Children: []*system.Department{}}).Children; got == nil || len(got) != 0 {
 		t.Fatalf("tree leaf children = %#v, want empty slice", got)
 	}
 }