Use tox for testing

.gitlab-ci.yml

-py27_django18:
-  script:
-    - "virtualenv-2.7 ./py27_django18"
-    - "source ./py27_django18/bin/activate"
-    - "pip install -r ./tests/requirements-common.txt -U"
-    - "pip install -U 'Django>=1.8,<1.9'"
-    - "python ./runtests.py"
-
-py27_django19:
-  script:
-    - "virtualenv-2.7 ./py27_django19"
-    - "source ./py27_django19/bin/activate"
-    - "pip install -r ./tests/requirements-common.txt -U"
-    - "pip install -U 'Django>=1.9,<1.10'"
-    - "python ./runtests.py"
-
-py27_django110:
-  script:
-    - "virtualenv-2.7 ./py27_django110"
-    - "source ./py27_django110/bin/activate"
-    - "pip install -r ./tests/requirements-common.txt -U"
-    - "pip install -U 'Django>=1.10,<1.11'"
-    - "python ./runtests.py"
-
-py27_django111:
-  script:
-    - "virtualenv-2.7 ./py27_django111"
-    - "source ./py27_django111/bin/activate"
-    - "pip install -r ./tests/requirements-common.txt -U"
-    - "pip install -U 'Django>=1.11,<1.12'"
-    - "python ./runtests.py"
-
-py34_django111:
-  script:
-    - "virtualenv-3.4 ./py34_django111"
-    - "source ./py34_django111/bin/activate"
-    - "pip install -r ./tests/requirements-common.txt -U"
-    - "pip install -U 'Django>=1.11,<1.12'"
-    - "coverage run ./runtests.py"
-    - "./coverage-report.py"
+
+stages:
+    - test
+
+before_script:
+    - python3.6 -m venv $HOME/tox
+    - $HOME/tox/bin/pip install tox
+
+py27-django18:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py27-django18'
+
+py27-django110:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py27-django110'
+
+py27-django111:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py27-django111'
+
+py36-django18:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py36-django18'
+
+py36-django110:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py36-django110'
+
+py36-django111:
+    stage: test
+    script: $HOME/tox/bin/tox -e 'py36-django111'
+

tests/requirements-common.txt

-# Common requirements for running the test suite
-ldap3
-coverage==4.3.4

tox.ini

+# Tox (https://tox.readthedocs.io/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+skipsdist = true
+envlist = py{27,36}-django{18,110,111}
+
+[testenv]
+#alwayscopy = True
+commands = coverage erase
+           coverage run ./runtests.py
+           ./coverage-report.py
+
+deps =
+    coverage
+    lxml
+    python-dateutil
+    ldap3
+    django18: Django >= 1.8, < 1.9
+    django110: Django >= 1.10, < 1.11
+    django111: Django >= 1.11, < 2
+
+setenv =
+    DJANGO_LIVE_TEST_SERVER_ADDRESS=localhost:9000-9200
+
+