对于Controller的单元测试，Grails也提供了很方便的支持，使得书写非常简单，有代码为证：
单元测试代码
| 1. class CategoryControllerTests extends GroovyTestCase { 2. 3. void setUp(){ 4. def test1= new Category(name: "Test1", parent: null).save() 5. def test2= new Category(name: "Test2", parent: null).save() 6. def test3= new Category(name: "Test3", parent: null).save() 7. 8. def test11= new Category(name: "Test11", parent: test1).save() 9. def test12= new Category(name: "Test12", parent: test1).save() 10. def test21= new Category(name: "Test21", parent: test2).save() 11. } 12. 13. void testListRoot() { 14. def controller= new CategoryController() 15. //categoryList对应返回的model 16. def categoryList= controller.list()?.categoryList 17. 18. assertEquals 3, categoryList.size() 19. assertEquals 'Test1', categoryList[0].name 20. assertEquals 'Test2', categoryList[1].name 21. assertEquals 'Test3', categoryList[2].name 22. } 23. 24. void testListTest1(){ 25. def controller= new CategoryController() 26. //其中的params表示的是requestparameter，后面的id是传入的参数。 27. //对于session之类以此类推。 28. controller.params.id= 1 29. def categoryList= controller.list()?.categoryList 30. 31. assertEquals 2, categoryList.size() 32. assertEquals 'Test11', categoryList[0].name 33. assertEquals 'Test12', categoryList[1].name 34. } 35. } |
Controller部分代码
| 1. class CategoryController { 2. def index = { redirect(action:list,params:params) } 3. 4. def allowedMethods = [save:'POST'] 5. 6. def list = { 7. if(!params.id){ 8. return [ categoryList: Category.findAllByParentIsNull() ] 9. }else{ 10. def category= Category.get(params.id) 11. if(category){ 12. return [ categoryList: Category.findAll("from Category c where c.parent.id=$params.id"), path: category.getPath()] 13. }else{ 14. flash.message = "Category not found with id ${params.id}" 15. redirect(action:list) 16. } 17. } 18. } 19. ...... 20. } |
以上的代码基本上向开发者隐藏了背后的Mock机制，使用起来也更加简单方便。对于如此简单就能完成Controller的测试，我们没有理由不把TDD进行到底。
