Grails Integration测试:失败...无法在null对象上调用方法addToPosts()

时间:2011-04-23 06:41:36

标签: grails groovy

:d 我正在阅读一本书中的教程,我确实完全遵循了它。 但是,在我应该编写集成测试的部分,它突然失败说:Cannot invoke method addToPosts() on null object在我运行测试之后。我想知道,有什么可能是错的......:请帮忙! :)下面是测试的代码:

void testFirstPost() {
   def user = new User(userID: 'joemillan', password:'youaretheonly',
                       homepage: 'www.geeee.com').save()

   def post = new Post (content: 'hellloo oasdo sjdosa daodkao ')
   user.addToPosts(post)

   assertEquals 1, User.get(user.id).posts.size()
}

以下是用户类:

class User {

   String userID
   String password
   String homepage

   Profile profile

   static hasMany=[posts:Post, tags:Tag]

   static constraints = {
      userID (unique: true, size: 6..20)
      password (size: 6..20, validator:{password,userID-> return password !=userID.userID}) //validator = The password must not match the username.
      homepage (url:true, nullable: true)
      profile (nullable: true)
   }
}

这是Post类:

class Post {

   String content
   Date dateCreated

   static constraints = {
      content (blank:false)
   }

   static belongsTo = [user:User]
   static hasMany = [tags:Tag]

   static mapping = {
      sort dateCreated: "desc"
   }
}

1 个答案:

答案 0 :(得分:2)

如果验证失败,

save()将返回null,并且“www.geeee.com”不是有效的URL。它适用于“http://www.geeee.com”。

但是您应该将创建和保存拆分为2个步骤,以便进行检查:

def user = new User(userID: 'joemillan', password:'youaretheonly',
                    homepage: 'www.geeee.com')
user.save()
assertFalse user.hasErrors()

或者如果您确信该部分应该成功并且只想测试其他部分,则使用failOnError,例如

def user = new User(userID: 'joemillan', password:'youaretheonly',
                    homepage: 'www.geeee.com').save(failOnError: true)