Switch tests to tox

Author: domdfcoding

.travis.yml

@@ -4,10 +4,11 @@ python:
   - '3.6'
   - '3.7'
   - "3.8"
+  - "pypy3"
 install:
-  - pip install coveralls -r tests/requirements.txt
-script:
-  - pytest --cov=domdf_python_tools tests/
+  - pip install coveralls tox tox-travis
+  script:
+  - tox
 after_success:
   - coveralls
 deploy:

domdf_python_tools/pagesizes.py

@@ -35,7 +35,7 @@
 #
 
 
-from collections import Sequence
+from collections.abc import Sequence
 import re
 
 

tests/test_pagesizes.py

@@ -7,13 +7,6 @@
 
 """
 
-import types
-import pathlib
-import decimal
-
-import pytest
-
-from domdf_python_tools.utils import str2tuple, tuple2str, chunks, list2str, list2string, bdict, pyversion
 from domdf_python_tools.pagesizes import *
 
 

tox.ini

@@ -0,0 +1,24 @@
+# This file must be in the dir as setup.py
+[tox]
+envlist = py{36,37,38,py3}
+skip_missing_interpreters = True
+requires = pip >= 19.0.0
+
+
+[build-system]
+requires = [
+           setuptools >= 46.1.3
+           wheel >= 0.34.2
+           ]
+build-backend = "setuptools"
+
+
+[testenv]
+description = pytest
+# Install test requirements
+deps = -r{toxinidir}/tests/requirements.txt
+
+commands =
+    python --version
+;   Run tests
+    python -m pytest --cov=domdf_python_tools tests/