Grails单元还是集成测试？ [英] Grails unit or integration tests?

问题描述

我不知道是否在我的Grails 2.2.3应用程序中使用单元或集成测试来测试我想测试的内容。我希望像这样运行一些测试：

  @TestFor（Student）
 @Mock（Student）
 class StudentTests {
 
 void testFoundStudent（）{
 def s = Student.findById（myId）
 assert s！= null 
 assert s.firstName =' Grant'
 assert s.lastName ='McConnaughey'
} 
} 
  

这需要使用我们的测试数据库，那么这会使它成为一个集成测试吗？当我将这段代码作为一个单元测试运行时，它在 assert s！= null 时失败。这意味着它没有使用我们的数据库，因为它应该找到具有该ID的学生。

在Grails单元测试中，可以使用Gorm测试域类交互，并且在场景后面，Grails将使用内存数据库（一个ConcurrentHashMap的实现）来模拟这种行为这里。所以是的，你会得到null，因为这个学生不存在于内存数据库中，你需要先插入这些数据。

  Student.findOrSaveWhere（名字：'Grant'，姓氏：'McConnaughey'）
  

在您的示例中，如果目的是测试数据的存在，则需要使用集成测试并使用<$ c将其连接到数据库$ c> datasource.groovy ，这真的不是一个好主意，除非你有充足的理由来测试你的数据。

如果你是试图再次测试 def s = Student.findById（myId），因为这是Grails动态查找器，您可能需要信任您正在使用的框架。然而，一般而言，

单元测试通常运行时不存在包含I / O数据库，套接字连接或
文件的物理
资源 link

我希望这可以帮助

I don't know whether to use unit or integration tests for what I am wanting to test in my Grails 2.2.3 application. I want to run some tests against like this:

@TestFor(Student)
@Mock(Student)
class StudentTests {

void testFoundStudent() {
        def s = Student.findById(myId)
        assert s != null
        assert s.firstName = 'Grant'
        assert s.lastName = 'McConnaughey'
    }
}

This is going to require the use of our test database, so would that make it an integration test? When I run this code as a unit test it fails at assert s != null. Which means it isn't using our database, because it SHOULD find a student with that ID.

解决方案

In Grails unit test you can test domain class interactions using Gorm and behind the scene Grails will use in-memory database(an implementation of a ConcurrentHashMap) to mimic this behavior here. So yes you get null because that student does not exist in in-memory database and you need to insert that data first.

Student.findOrSaveWhere (firstName: 'Grant',lastName : 'McConnaughey')

In your example, if the intention is to test the existence of that data you need to use integration test and connect it to your database using datasource.groovy , which is really not a good idea unless you have a good reason to test your data.

If you are trying to test def s = Student.findById(myId) again that is not adding any value as that is Grails dynamic finder and you probably need to trust the framework you are using.

However, in general

Unit tests are typically run without the presence of physical resources that involve I/O such databases, socket connections or files link

I hope this helps

这篇关于Grails单元还是集成测试？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！