unit-testing - 在使用Grails 2.5.1的Spock单元测试中， Controller 始终为null

Question

我是使用Grails 2.5.1的新手。我需要运行一些单元和集成测试，但无法使其正常运行。

我的域类是:

class Role {

String roleName

Role(String _roleName) {
    roleName = _roleName
}

static constraints = {
    roleName(blank: false, nullable: false)
}
String toString(){
    "$roleName"
}

}

我的 Controller 类是:

class RoleController {

static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]

def index(Integer max) {
    params.max = Math.min(max ?: 10, 100)
    respond Role.list(params), model:[roleInstanceCount: Role.count()]
}

def show(Role roleInstance) {
    respond roleInstance
}

def create() {
    respond new Role(params)
}

...
}

在测试/单元下，我有类RoleControllerSpec:

import grails.test.mixin.*
import spock.lang.*

@TestFor(RoleController)
@Mock(Role)
class RoleControllerSpec extends Specification {

def 'index action: 1 role'() {
    setup:
    roleInstance.save()

    expect:
    controller.index() == [roleInstanceList: [roleInstance], roleInstanceTotal: 1]

    where:
    roleInstance = new Role(roleName: "Role1")
}



def "create action"() {
    setup:
    controller.params.roleName = roleName

    when:

    def model = controller.create()

    then:
    model.roleInstance != null
    model.roleInstance.roleName == roleName


    where:
    roleName = "Role1"

}
}

当我使用test-app -unit RoleController运行测试时，出现以下异常:

|Configuring classpath
.
|Environment set to test
....................................
|Running without daemon...
..........................................
|Compiling 1 source files
.
|Running 2 unit tests...

|Running 2 unit tests... 1 of 2
Failure:  |
index action: 1 role(accessmanagement.RoleControllerSpec)
 |
Condition not satisfied:
controller.index() == [roleInstanceList: [roleInstance], roleInstanceTotal: 1]
|          |       |                      |
|          null    false                  Role1
 role(RoleControllerSpec.groovy:17)

|Running 2 unit tests... 2 of 2
Failure:  |
create action(accessmanagement.RoleControllerSpec)
 |
java.lang.NullPointerException: Cannot get property 'roleInstance' on null object
at accessmanagement.RoleControllerSpec.create action(RoleControllerSpec.groovy:34)

|Completed 2 unit tests, 2 failed in 0m 6s
.Tests FAILED 
|
Error |
Forked Grails VM exited with error

在我的测试中， Controller 似乎为空。
在第一个测试中controller.index()为null。在第二个测试中，def model = controller.create()未创建对象，然后当我尝试访问model.roleInstance时无法获取该属性。

任何想法将不胜感激。
谢谢!

Answer 1

由于您使用的是响应而不是简单地从 Controller 返回映射，因此您需要检查model属性

def 'index action: 1 role'() {
    setup:
    Role roleInstance = new Role(roleName: "Role1").save()

    when:
    controller.index()

    then:
    model == [roleInstanceList: [roleInstance], roleInstanceTotal: 1]
}

我建议您阅读有关测试 Controller https://grails.github.io/grails-doc/2.5.x/guide/testing.html#unitTestingControllers的文档