如何使用factory_boy为MongoEngine EmbeddedDocument建模？

Question

我正在尝试使用factory_boy来帮助为我的测试生成一些MongoEngine文档。我在定义EmbeddedDocumentField对象时遇到问题。

这是我的MongoEngine Document

class Comment(EmbeddedDocument):
    content = StringField()
    name = StringField(max_length=120)

class Post(Document):
    title = StringField(required=True)
    tags = ListField(StringField(), required=True)
    comments = ListField(EmbeddedDocumentField(Comment))

这是我的部分完成的factory_boy Factory

class CommentFactory(factory.Factory):
    FACTORY_FOR = Comment
    content = "Platinum coins worth a trillion dollars are great"
    name = "John Doe"

class BlogFactory(factory.Factory):
    FACTORY_FOR = Blog
    title = "On Using MongoEngine with factory_boy"
    tags = ['python', 'mongoengine', 'factory-boy', 'django']
    comments = [factory.SubFactory(CommentFactory)] # this doesn't work

你知道如何指定comments字段吗？问题是，工厂里的普通员工试图创建Comment EmbeddedDocument。

Answer 1

我不确定这是否是你想要的，但我刚开始研究这个问题，这似乎是可行的：

from mongoengine import EmbeddedDocument, Document, StringField, ListField, EmbeddedDocumentField
import factory

class Comment(EmbeddedDocument):
    content = StringField()
    name = StringField(max_length=120)

class Post(Document):
    title = StringField(required=True)
    tags = ListField(StringField(), required=True)
    comments = ListField(EmbeddedDocumentField(Comment))


class CommentFactory(factory.Factory):
    FACTORY_FOR = Comment
    content = "Platinum coins worth a trillion dollars are great"
    name = "John Doe"

class PostFactory(factory.Factory):
    FACTORY_FOR = Post
    title = "On Using MongoEngine with factory_boy"
    tags = ['python', 'mongoengine', 'factory-boy', 'django']
    comments = factory.LazyAttribute(lambda a: [CommentFactory()])

>>> b = PostFactory()
>>> b.comments[0].content
'Platinum coins worth a trillion dollars are great'

不过，如果我错过了什么，我也不会感到惊讶。

Answer 2

我现在要做的就是阻止基于EmbeddedDocuments的工厂的构建。因此，我设置了一个EmbeddedDocumentFactory，如下所示：

class EmbeddedDocumentFactory(factory.Factory):

    ABSTRACT_FACTORY = True

    @classmethod
    def _prepare(cls, create, **kwargs):                                        
        return super(EmbeddedDocumentFactory, cls)._prepare(False, **kwargs)

然后我继承了它，为EmbeddedDocuments创建工厂：

class CommentFactory(EmbeddedDocumentFactory):

    FACTORY_FOR = Comment

    content = "Platinum coins worth a trillion dollars are great"
    name = "John Doe"

这可能不是最好的解决方案，所以在接受这个答案之前，我会等待其他人的响应。