Python 在django单元测试中上载图像

我正在尝试将图像上载到单元测试中的ImageField，但无法找出错误

这是我的代码（这一个在使用FileField的其他单元测试中运行良好）

获取此错误

Traceback (most recent call last):
File "/home/ben/aktweb/lib/python3.4/site-packages/PIL/ImageFile.py", line  100, in __init__
self._open()
File "/home/ben/aktweb/lib/python3.4/site-packages/PIL/TgaImagePlugin.py", line 62, in _open
depth = i8(s[16])
IndexError: index out of range

当我尝试使用真实图像时

img = ('/home/ben/aktweb/7.jpg')
with open(img) as infile:
    request = self.factory.put(
        '/api/1.0/accounts/artist/',
        {'profile_img': SimpleUploadedFile('7.jpg', infile.read())}
    )
    force_authenticate(request, self.artist)
    view = AccountViewSet.as_view({'put': 'update'})
    resp = view(request, slug='artist')
    self.assertEqual(resp.status_code, 200)
    self.assertTrue(resp.data.get('is_artist'))

到此为止

Traceback (most recent call last):
File "/home/ben/aktweb/django/accounts/tests/test_views.py", line 163, in test_update
{'profile_img': SimpleUploadedFile('7.jpg', infile.read())}
File "/home/ben/aktweb/lib/python3.4/codecs.py", line 319, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

以二进制模式（

b

）打开图像文件：

只需将文件对象作为字典的值传递

---

---

即使使用SimpleUploadedFile也能正常工作，非常感谢！

Traceback (most recent call last):
File "/home/ben/aktweb/django/accounts/tests/test_views.py", line 163, in test_update
{'profile_img': SimpleUploadedFile('7.jpg', infile.read())}
File "/home/ben/aktweb/lib/python3.4/codecs.py", line 319, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

img = '/home/ben/aktweb/7.jpg'
with open(img, 'rb') as infile:
    request = self.factory.put(
        '/api/1.0/accounts/artist/',
        {'profile_img': infile}
    )
    ...