Controller with multiple inter-related collaborators

FancyControllerTests

package mypackage

import grails.plugin.spock.ControllerSpec

import org.hamcrest.CoreMatchers
import static org.hamcrest.CoreMatchers.notNullValue
import static org.junit.Assert.assertEquals
import static org.junit.Assert.assertThat

class FancyControllerTests extends ControllerSpec {


  def mockService1
  def mockService2
  def mockService3

  def setup() {
    mockService1 = Mock(Service1)
    mockService2 = Mock(Service2)
    mockService3 = Mock(Service3)
    controller.service1 = mockService1
    controller.service2 = mockService2
    controller.service3 = mockService3
  }

  def "should mock out interactions with multiple collaborators"() {

    def param1 = "yada"

    given: "url with param1 value yada is requested"
    controller.params.param1 = param1

    when: 
    def model = controller.index()

    then: "ensure that collaborators are called as expected"
    1 * mockService1.serviceCall1({it == "${param1}"}) >> mockDataProducer1(1,1,1)
    1 * mockService2.serviceCall2(producer1.result.property) >> mockDataProducer2() //call to serviceCall2 is based on return value from serviceCall1

    and: "model should be populated with the correct data"
    assertThat("We should have content 1", model.content1, notNullValue())
    assertThat("We should content2 should have value 2", model.content2, CoreMatchers.is(2))
  }



  def mockDataProducer1(Integer param1, Integer param2, Integer param3) {
    return mockData1 //non-data base mock data
  }

  def mockDataProducer2(param1) {

    return mockData2 //again not grails domain data
  }



}