grails - Grails 单元测试控制器 GSON

Question

我正在尝试为将 GSON 作为输入并写入 DB 的简单控制器编写单元测试。GSON 因为，输入有嵌套对象。

如果我使用 JSON，则单元测试有效，但 JSON 对嵌套对象有其局限性。

域类：

class Artist { 
    String guid 
    String name 

    static constraints = { 
        name nullable: true 
    }

    static mapping = { 
        guid blank:false, unique: true 
    }

    static hasMany = [albums: Albums] 
    /*static marshalling={ deep 'albums' }*/ 
}

控制器实现：

def create() {
    def artist = new Artist(request.GSON)
    if (!artist.save(flush: true)) {
        artist.errors.each {
        log.error("Error while creating Artist " + it)
        }
        render status: 500, layout: null
        return
    }
    response.status = 201
    render artist as GSON
}

单元测试：

@TestMixin(GsonUnitTestMixin)
@TestFor(ArtistController)
@Mock(Artist)
class ArtistControllerTests {
    void testCreate() {
        request.GSON = "{guid:123,"+
                                       "name: 'Akon',"+
                "albums: ["+
                "{guid:1,"+
                "name:'album 1'"+
                "}]}"
        controller.create()
        assert response.status == 201
       }
   }

例外：无法在控制器中的 def Artist = new Artist(request.GSON) 处获取空对象上的属性“manyToOne”

任何帮助将不胜感激..