'This also tests the situation when Pillow doesn\'t detect the MIME type
of the image (#24948).'

def test_imagefield_annotate_with_bitmap_image_after_clean(self):

    from PIL.BmpImagePlugin import BmpImageFile
    try:
        Image.register_mime(BmpImageFile.format, None)
        f = ImageField()
        img_path = get_img_path('filepath_test_files/1x1.bmp')
        with open(img_path, 'rb') as img_file:
            img_data = img_file.read()
        img_file = SimpleUploadedFile('1x1.bmp', img_data)
        img_file.content_type = 'text/plain'
        uploaded_file = f.clean(img_file)
        self.assertEqual('BMP', uploaded_file.image.format)
        self.assertIsNone(uploaded_file.content_type)
    finally:
        Image.register_mime(BmpImageFile.format, 'image/bmp')
