使用 ImageField 的 Django 测试模型

2022-01-08 00:00:00 python django mocking testing

问题描述

我需要测试我的 Django 应用程序的照片模型.如何使用测试图像文件模拟 ImageField?

I need to test the Photo model of my Django application. How can I mock the ImageField with a test image file?

tests.py

class PhotoTestCase(TestCase):

    def test_add_photo(self):
        newPhoto = Photo()
        newPhoto.image = # ??????
        newPhoto.save()
        self.assertEqual(Photo.objects.count(), 1)

解决方案

对于未来的用户，我已经解决了问题.您可以模拟 ImageField 带有 SimpleUploadedFile 实例.

For future users, I've solved the problem. You can mock an ImageField with a SimpleUploadedFile instance.

test.py

from django.core.files.uploadedfile import SimpleUploadedFile

newPhoto.image = SimpleUploadedFile(name='test_image.jpg', content=open(image_path, 'rb').read(), content_type='image/jpeg')

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