Grails Spock Mock在單元測試中注入服務

Question

如何使用Spock在Grails UnitTest（規范）中注入其他服務？

class ServiceOne {

   ServiceTwo serviceTwo

    ModelOne getMethodOne(String name) {
       // do somethings here
       return serviceTwo.getMethodTwo(name)
    }
}

class ServiceTwo {

   ServiceTwo serviceTwo

    ModelOne getMethodTwo(String name) {
       // do somethings here
       return ModelOne.get(name)
    }
}

// Tests
import grails.test.mixin.Mock
import grails.test.mixin.TestFor
import spock.lang.Specification
/**
 * Tests for ServiceOne
 */
@TestFor(ServiceOne)
@Mock(ModelOne)
class ServiceOneSpec extends Specification {
/** Inject serviceTwo in here
    Otherwise the following exception is thrown
    java.lang.NullPointerException: Cannot invoke method getMethodTwo() on null object
*/

void "test method one"() {

    when:
    ModelOne modelOne = service.getMethodOne(name)

    then:
    modelOne != null
   }
}

Answer 1

這就是我解決問題的方法 - 通過創建服務的對象（它不是單例，但它很好，因為它只是用於單元測試）

// Test Spec
import grails.test.mixin.Mock
import grails.test.mixin.TestFor
import spock.lang.Specification
/**
 * Tests for ServiceOne
 */
@TestFor(ServiceOne)
@Mock(ModelOne)
class ServiceOneSpec extends Specification {

    @Shared ModelOne modelOne
    def setup() {
        // the magic
        service.serviceTwo = new ServiceTwo()
        modelOne = service.serviceTwo.getMethodTwo("Name")
    }

    void "test method one"() {

        when:
        ModelOne modelOne = service.getMethodOne(name)

        then:
        modelOne != null
   }
}

Answer 2

在我的頭頂，這應該讓你開始。

@TestFor(ServiceOne)
@Mock(ModelOne)
class ServiceOneSpec extends Specification {

   void "test method one"() {
      given:
         def mockServiceTwo = mockFor(ServiceTwo)
         // expect that getMethodTwo is called once
         mockServiceTwo.demand.getMethodTwo(1) { String name ->
            // for any arbitrary name value, return a new ModelOne
            return new ModelOne()
         }
         service.serviceTwo = mockServiceTwo.createMock()
      when:
         ModelOne modelOne = service.getMethodOne(name)

      then:
         modelOne != null
   }
}