如何在django中模拟模型的外键模型？

from unittest.mock import Mock
from django.db import models

# 创建一个虚拟的外键模型
mock_foreign_model = Mock(spec=models.Model)
mock_foreign_model.__name__ = 'MockForeignModel'
mock_foreign_model.objects = Mock()

class MyModel(models.Model):
    foreign_key = models.ForeignKey(mock_foreign_model, on_delete=models.CASCADE)
    # 其他字段...

# 创建外键模型的实例
instance = mock_foreign_model()
instance.id = 1
instance.name = 'Example'

# 模拟外键模型的查询操作
mock_foreign_model.objects.get.return_value = instance

# 在使用外键模型的模型中进行操作
my_model_instance = MyModel.objects.get(id=1)
print(my_model_instance.foreign_key.name)  # 输出: Example