Spock - 嘲弄外部服务

Question

我是spock框架测试的新手,我没有找到任何可以找到所需信息的例子.因此,我认为最好的方法是展示一个我需要的例子.

1. 例如spock中的测试类:

   def "getData" (){ // this is test of getData method from ExternalService
     when:
       Result result = externalService.getData()
     then:
       result.msg = 'SUCCESS'
   }
   

2. 服务类别:

   public class ExternalService(){
     private ServiceConnector serviceConnector;
   
     public Result getData(){
       Result result = serviceConnector.callAndGet(); 
       prepareInformation(data);
       updateStatuses(data);
       return result;
     }
   }
   

3. 类数据作为域类:

   public class Data {
     private String msg
     private int Id
     // +getters/setters
   }
   

现在我有getData测试,并想嘲笑唯一的方法callAndGet().这意味着每次调用时callAndGet我都需要使用带有msg SUCCESS的对象数据,但是getData应该正常调用方法中的所有其他方法.

这是可以理解的吗？问题是我们如何将服务类注入/模拟ExternalService到spock测试类中？

Answer 1

你需要做的是模拟ServiceConnector类并通过构造函数(例如)传递它.见下文:

@Grab('org.spockframework:spock-core:1.0-groovy-2.4')
@Grab('cglib:cglib-nodep:3.1')


import spock.lang.*

class Test extends Specification {
    def 'some spec'() {
        given:    
            def serviceConnector = Mock(ServiceConnector) {
                callAndGet() >> new Result(msg: 'SUCCESS')
            }
            def externalService = new ExternalService(serviceConnector)

        when:
            Result result = externalService.getData()

        then:
            result.msg == 'SUCCESS'
    }
}

public class ExternalService {
  private ServiceConnector serviceConnector

  public ExternalService(ServiceConnector serviceConnector) {
      this.serviceConnector = serviceConnector
  }

  public Result getData() {
    Result result = serviceConnector.callAndGet()

    prepareInformation(result)
    updateStatuses(result)
    result
  }

  private void prepareInformation(Result data) {
  }

  private void updateStatuses(Result data) {
  }
}

public class ServiceConnector {
    public Result callAndGet() {

    }    
}

public class Result {
    String msg
}