def upload_and_convert_image_file(request):
"""
The main view which accepts a file via an 'ImageConverterForm', converts it to a JPEG file and returns it ready for
download as an attachment.
"""
if request.method == 'POST':
form = ImageConverterForm(request.POST, request.FILES)
if form.is_valid():
f = request.FILES['file']
context = {
'file': f,
}
try:
converted_img = convert_image_to_jpeg(f)
name = get_filename_without_extension(f.name)
response = HttpResponse(converted_img.getvalue(),
content_type='image/jpeg')
response['Content-Disposition'] = 'attachment; filename={0}.jpg'.format(name)
return response
except IOError:
return render(request,'unsupported_image_file_error.html',
context)
except Exception as e:
return render(request,'generic_error.html',
context)
else:
form = ImageConverterForm()
return render(request,
'upload.html',
{'form': form})
def test_empty_filename(self):
"""
Tests an empty file name.
"""
# Given
expected_name = 'file'
# When
name = get_filename_without_extension('')
# Then
self.assertEqual(expected_name, name)
def test_filename_without_extension(self):
"""
Tests random file names that lack an extension.
"""
for _ in xrange(100):
# Given
expected_filename = ''.join([choice(letters) for _ in xrange(8)])
# When
name = get_filename_without_extension(expected_filename)
# Then
self.assertEqual(expected_filename, name)
def test_empty_filename(self):
"""
Tests an empty file name.
"""
# Given
expected_name = 'file'
# When
name = get_filename_without_extension('')
# Then
self.assertEqual(expected_name,
name)
def test_filename_without_extension(self):
"""
Tests random file names that lack an extension.
"""
for _ in xrange(100):
# Given
expected_filename = ''.join([choice(letters) for _ in xrange(8)])
# When
name = get_filename_without_extension(expected_filename)
# Then
self.assertEqual(expected_filename,
name)
def test_standard_filename(self):
"""
Tests random file names which are made up of a name without any dots and a single extension; name and
extension are separated by a dot.
"""
for _ in xrange(100):
# Given
expected_name = ''.join([choice(letters) for _ in xrange(8)])
extension = ''.join([choice(letters) for _ in xrange(3)])
filename = '{0}.{1}'.format(expected_name, extension)
# When
name = get_filename_without_extension(filename)
# Then
self.assertEqual(expected_name, name)
def test_multiple_extensions(self):
"""
Tests random file names with multiple extensions.
"""
for _ in xrange(100):
# Given
filename = ''.join([choice(letters) for _ in xrange(8)])
for _ in xrange(10):
filename += '.'.join([choice(letters) for _ in xrange(3)])
# When
name = get_filename_without_extension(filename)
# Then
expected_name, extension = filename.rsplit('.', 1)
self.assertEqual(expected_name, name)
def test_multiple_extensions(self):
"""
Tests random file names with multiple extensions.
"""
for _ in xrange(100):
# Given
filename = ''.join([choice(letters) for _ in xrange(8)])
for _ in xrange(10):
filename += '.'.join([choice(letters) for _ in xrange(3)])
# When
name = get_filename_without_extension(filename)
# Then
expected_name, extension = filename.rsplit('.', 1)
self.assertEqual(expected_name,
name)
def test_standard_filename(self):
"""
Tests random file names which are made up of a name without any dots and a single extension; name and
extension are separated by a dot.
"""
for _ in xrange(100):
# Given
expected_name = ''.join([choice(letters) for _ in xrange(8)])
extension = ''.join([choice(letters) for _ in xrange(3)])
filename = '{0}.{1}'.format(expected_name,
extension)
# When
name = get_filename_without_extension(filename)
# Then
self.assertEqual(expected_name,
name)
