def add(request):
"""Submit image using form"""
if request.method == 'POST':
form = ImageForm(BackgroundImage, request.POST, request.FILES)
if form.is_valid():
form.save()
return redirect('/')
else:
form = ImageForm(BackgroundImage.specs())
return render(request, 'django_images.html', dict(form=form))
def test_resize_big_image_in_background_format(self):
"""Test resizing of big enough image to background format"""
filepath = os.path.join(settings.BASE_DIR, 'big.jpeg')
with open(filepath) as f:
# prepare form data
image = InMemoryUploadedFile(
f,
'image',
'big.jpeg',
'image/jpeg',
42, # not significant for the test
'utf-8')
files = MultiValueDict()
files['image'] = image
post = MultiValueDict()
post['name'] = 'test image'
# create form
form = ImageForm(TestImage, post, files)
# validate resize operation
self.assertTrue(form.is_valid())
# execute resize operation
image = form.save()
for size in ('og', 'lg', 'md', 'sm', 'xs'):
filepath = getattr(image, size)['filepath']
filepath = os.path.join(settings.MEDIA_ROOT, filepath)
self.assertTrue(os.path.exists(filepath))
def create_image():
filepath = os.path.join(settings.BASE_DIR, 'big.jpeg')
with open(filepath) as f:
# prepare form data
image = InMemoryUploadedFile(
f,
'image',
'big.jpeg',
'image/jpeg',
42, # not significant for the test
'utf-8')
files = MultiValueDict()
files['image'] = image
post = MultiValueDict()
post['ptype'] = 1
post['name'] = 'test with big.jpeg'
# create form
form = ImageForm(TestImage, post, files)
# validate resize operation
form.is_valid()
# execute resize operation
image = form.save()
return image
def test_validation(self):
"""Validate an image against a complex format"""
filepath = os.path.join(settings.BASE_DIR, 'middle.jpeg')
with open(filepath) as f:
# prepare form data
image = InMemoryUploadedFile(
f,
'image',
'middle.jpeg',
'image/jpeg',
42, # not significant for the test
'utf-8')
files = MultiValueDict()
files['image'] = image
post = MultiValueDict()
post['name'] = 'test image'
# create form
form = ImageForm(TestImage, post, files)
# validate resize operation
v = form.is_valid()
self.assertTrue(v)
def test_fail_to_resize_small_image_in_background_format(self):
"""Test resizing of image fails validation"""
filepath = os.path.join(settings.BASE_DIR, 'small.jpeg')
with open(filepath) as f:
# prepare form data
image = InMemoryUploadedFile(
f,
'image',
'small.jpeg',
'image/jpeg',
42, # not significant for the test
'utf-8')
files = MultiValueDict()
files['image'] = image
post = MultiValueDict()
post['ptype'] = 1
post['name'] = 'test with small.jpeg'
# create form
form = ImageForm(TestImage, post, files)
# validate resize operation
self.assertFalse(form.is_valid())