Python3 and Django 1.11 upgrade (#40)

* starting py3 upgrade

* b64 not base64

* more progress, some more future things, and encoding

* tox

* update circle.yml

* that version doesnt exist yet, oops

* install?

* sigh

* Docker me?

* update readme, requirements

* fix for python3

* python35

* morgan remediations

* does this work?

* how about this?

* one more time

* no blank lines?

* revert a bit

* add future imports

README.md

@@ -7,6 +7,18 @@ Easy to use for testing remote storages when you're in a transition stage betwee
 
 Intended to be used in tests, never in production.
 
+## TESTING
+
+I use Pyenv and Tox to support Python2.7.13 and Python3.6.3
+
+```
+pip install -r requirements-dev.txt
+pyenv install 2.7.13 3.5.4 3.6.3
+tox
+```
+
+Or you can run individually with your shell python using `python setup.py test`
+
 ## INSTALLATION
 
 ```
@@ -42,7 +54,7 @@ class SomeClass(models.Model):
 ## TODO
 
 - Test that this works on a fake model, not just the storage file.
-- Different django and different python versions.
+- Different django versions.
 
 ## Signing Key
 You can find my signing key at [TyrelSouza.com](https://tyrelsouza.com/koken/?/pages/pgp-keys/)
@@ -51,6 +63,7 @@ I will sign everything with 0x769A1BC78A2DDEE2
 
 ## CHANGELOG
 
+- 2018-02-01 [Tyrel Souza] Bump versions to django 1.11 and testing with Python3
 - 2017-05-10 [Pamela McA'Nulty] Have save overwrite existing files
 - 2017-02-06 [Tyrel Souza] Set primary key to `id` not `name`, this involves a lot of migrations, so I've kept them in multiple files
 - 2017-01-27 [Tyrel Souza] Get rid of filehash

circle.yml

@@ -1,3 +1,14 @@
+version: 2
+
+jobs:
+  build:
+    working_directory: ~/django-dbfilestorage
+    docker:
+      - image: themattrix/tox
+    steps:
+      - checkout
+      - run: tox
+
 test:
   post:
     - bash <(curl -s https://codecov.io/bash)

dbfilestorage/admin.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
 from django.contrib import admin
 from .models import DBFile
 

dbfilestorage/models.py

@@ -1,6 +1,10 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
 from django.db import models
+from future.utils import python_2_unicode_compatible
 
 
+@python_2_unicode_compatible
 class DBFile(models.Model):
     """ Model to store and access uploaded files """
 
@@ -11,7 +15,7 @@ class DBFile(models.Model):
     b64 = models.TextField()
     mtime = models.DateTimeField(auto_now=True)
 
-    def __unicode__(self):
+    def __str__(self):
         return u"{name} <{content_type}>".format(
             name=self.name, content_type=self.content_type)
 

dbfilestorage/storage.py

@@ -1,3 +1,6 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
+import base64
 import mimetypes
 import logging
 import os
@@ -6,7 +9,7 @@ from django.db.transaction import atomic
 from django.db.models import Q
 from django.core.files.base import ContentFile
 from django.core.files.storage import Storage
-from django.core.urlresolvers import reverse
+from django.core.urlresolvers import reverse_lazy
 
 from .models import DBFile
 
@@ -29,7 +32,7 @@ class DBFileStorage(Storage):
 
     def _open(self, name, mode='rb'):
         the_file = _get_object(name)
-        return ContentFile(the_file.b64.decode('base64'))
+        return ContentFile(base64.b64decode(the_file.b64))
 
     @atomic
     def _save(self, name, content, max_length=None):
@@ -43,8 +46,13 @@ class DBFileStorage(Storage):
            Then it checks if the file exists and if it doesn't, it will create
            the entry in the database.
 
+           :param name: file name to save
+           :param content: Content object, where content.file is bytes
+
            :return str: the name(md5) to look up the file by.
         """
+
+        # TODO: Make this conditional better
         if hasattr(content.file, "read"):
             read_data = content.file.read()
             if not read_data:
@@ -52,8 +60,9 @@ class DBFileStorage(Storage):
                 content.file.seek(0)
                 read_data = content.file.read()
         else:
-            read_data = content.file.encode('utf8')
-        b64 = read_data.encode('base64')
+            read_data = content.file
+
+        b64 = base64.b64encode(read_data)
 
         # USE mimetypes.guess_type as an attempt at getting the content type.
         ct = mimetypes.guess_type(name)[0]
@@ -91,8 +100,8 @@ class DBFileStorage(Storage):
     def url(self, name):
         dbf = _get_object(name)
         if dbf:
-            return reverse('dbstorage_file', args=(dbf.name,))
-        return reverse('dbstorage_file', args=(name,))
+            return reverse_lazy('dbstorage_file', args=(dbf.name,))
+        return reverse_lazy('dbstorage_file', args=(name,))
 
     def modified_time(self, name):
         dbf = _get_object(name)

dbfilestorage/urls.py

@@ -1,5 +1,7 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
 from django.conf.urls import url
-import views
+from dbfilestorage import views
 
 urlpatterns = [
     url(r'^(?P<name>.*)$', views.show_file, name="dbstorage_file"),

dbfilestorage/views.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, print_function, unicode_literals
+
+import base64
+
 from django.http import HttpResponse, Http404
 from django.db.models import Q
 from django.shortcuts import get_object_or_404
@@ -15,7 +19,7 @@ def show_file(request, name):
     """
     dbf = get_object_or_404(DBFile, name=name)
     response = HttpResponse(
-        dbf.b64.decode('base64'),
+        base64.b64decode(dbf.b64),
         content_type=dbf.content_type)
     response['Content-Disposition'] = 'attachment; filename="{}"'.format(
         dbf.name)

requirements-dev.txt

@@ -0,0 +1,4 @@
+Sphinx==1.5
+coverage==4.2
+future
+tox

requirements.txt

@@ -1,3 +1 @@
-Django==1.10.4
-Sphinx==1.5
-coverage==4.2
+Django==1.11.10

setup.py

@@ -21,10 +21,11 @@ class CleanCommand(Command):
         os.system('rm -vrf ./build ./dist ./*.pyc ./*.tgz ./*.egg-info')
         os.system('rm -vrf htmlcov .coverage')
         os.system('rm -vrf .DS_Store')
+        os.system('rm -vrf .tox')
 
 setup(
     name="django-dbfilestorage",
-    version="0.9.2",
+    version="0.9.3",
     description="Database backed file storage for testing.",
     long_description="Database backed file storage for testing. Stores files as base64 encoded textfields.",
     author="Tyrel Souza",
@@ -38,11 +39,12 @@ setup(
     ],
     include_package_data=True,
     install_requires=[
-        "Django>=1.8.0",
+        "Django==1.11.10",
     ],
     tests_require=[
         "nose",
         "coverage",
+        "future",
     ],
     zip_safe=False,
     test_suite="tests.runtests.start",

tests/tests.py

@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+import base64
 import os
 
 from dbfilestorage.models import DBFile
@@ -11,6 +13,7 @@ from django.test import TestCase, Client
 from django.test.utils import override_settings
 
 
+
 PROJECT_ROOT = os.path.dirname(os.path.realpath(__file__))
 DEFAULT_FILE_STORAGE = "dbfilestorage.storage.DBFileStorage"
 
@@ -36,10 +39,10 @@ class DBFileTest(TestCase):
 
     def test_content_file(self):
         """ Test that this code works with ContentFile as well """
-        content_file = ContentFile(u"ƊBStørage")
+        content_file = ContentFile(b"\\u018aBSt\\xf8rage")
         default_storage.save("unicode", content_file)
         unicode_file = DBFile.objects.get(name="unicode")
-        self.assertEqual(unicode(unicode_file),
+        self.assertEqual(str(unicode_file),
             "unicode <application/octet-stream>")
 
     def test_no_duplicate_upload(self):
@@ -52,7 +55,7 @@ class DBFileTest(TestCase):
         """ Test that the DB entry matches what is expected from the file """
         with open(self.filepath, 'rb') as f:
             dbf = DBFile.objects.get(name=self.filepath)
-            self.assertEqual(dbf.b64.decode("base64"), f.read())
+            self.assertEqual(base64.b64decode(dbf.b64), f.read())
             self.assertEqual(dbf.content_type, 'image/jpeg')
 
     def test_open(self):
@@ -62,7 +65,7 @@ class DBFileTest(TestCase):
             self.assertEqual(dbf.read(), f.read())
 
     def test_exists(self):
-        """ Test that the storage mechanism can check existance """
+        """ Test that the storage mechanism can check existence """
         self.assertTrue(default_storage.exists(self.filepath))
 
     def test_delete(self):
@@ -81,8 +84,8 @@ class DBFileTest(TestCase):
         self.assertGreater(size, 0)
 
     def test_raw_save(self):
-        CONTENT_DATA_1 = u"Here's some stuff! ƊBStørage - ONE"
-        CONTENT_DATA_2 = u"Here's some stuff! ƊBStørage - TWO"
+        CONTENT_DATA_1 = "Here's some stuff! ƊBStørage - ONE"
+        CONTENT_DATA_2 = "Here's some stuff! ƊBStørage - TWO"
         FILE_NAME = "saveable.txt"
         self.assertFalse(DBFile.objects.filter(name=FILE_NAME).exists())
 
@@ -142,9 +145,9 @@ class DBFileTest(TestCase):
     def test_listdir(self):
         """ Make sure listdir works, and only returns things under 'dirname' """
         names = [
-            u'dirname/kris.jpg',
-            u'dirname/kris2.jpg',
-            u'dirname/kris3.jpg']
+            'dirname/kris.jpg',
+            'dirname/kris2.jpg',
+            'dirname/kris3.jpg']
 
         for name in names:
             self._upload(name=name)

tests/urls.py

@@ -1,18 +1,5 @@
-"""tests URL Configuration
+from __future__ import absolute_import, print_function, unicode_literals
 
-The `urlpatterns` list routes URLs to views. For more information please see:
-    https://docs.djangoproject.com/en/1.10/topics/http/urls/
-Examples:
-Function views
-    1. Add an import:  from my_app import views
-    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
-Class-based views
-    1. Add an import:  from other_app.views import Home
-    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
-Including another URLconf
-    1. Import the include() function: from django.conf.urls import url, include
-    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
-"""
 from django.conf.urls import url, include
 from django.contrib import admin
 

tests/wsgi.py

@@ -1,11 +1,4 @@
-"""
-WSGI config for tests project.
-
-It exposes the WSGI callable as a module-level variable named ``application``.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/
-"""
+from __future__ import absolute_import, print_function, unicode_literals
 
 import os
 

tox.ini

@@ -0,0 +1,9 @@
+[tox]
+envlist = py27,py35,py36
+
+
+[testenv]
+commands=pip install -e .
+         pip install -r requirements.txt
+         python setup.py test
+install_command=pip install --process-dependency-links --allow-external --allow-unverified {opts} {packages}