Add Django 1.11 supports again

Author: luzfcb

setup.py

@@ -35,7 +35,7 @@ def find_version(*file_paths):
     packages=[
         'timezone_field',
     ],
-    install_requires=['django>=2.2', 'pytz'],
+    install_requires=['django>=1.11', 'pytz'],
     extras_require={
         'rest_framework': ['djangorestframework>=3.0.0']
     },

tests/settings.py

@@ -69,7 +69,10 @@
         'default': {
             'ENGINE': 'django.db.backends.postgresql_psycopg2',
             'NAME': 'timezone_field_tests',
-            'USER': 'postgres',
+            'USER': 'test_user',
+            'PASSWORD': 'test_user',
+            'HOST': '127.0.0.1',
+            'PORT': '5599',
         },
     }
 

tox.ini

@@ -1,11 +1,13 @@
 [tox]
+requires =
+  tox-docker
 envlist =
     coverage-clean,
     py35-{django22}-{sqlite,postgres},
     py36-{django22,django30,django31}-{sqlite,postgres},
     py37-{django22,django30,django31}-{sqlite,postgres},
     py38-{django22,django30,django31}-{sqlite,postgres},
-    py39-{django22,django30,django31}-{sqlite,postgres},
+    py39-{django11,django22,django30,django31}-{sqlite,postgres},
     coverage-report,
     py39-flake8
 
@@ -14,6 +16,7 @@ commands = coverage run --include='*/timezone_field/*' {envbindir}/django-admin.
 deps =
     coverage
     djangorestframework>=3.0.0
+    django11: django>=1.11.29,<2.0
     django22: django>=2.2.17,<2.3
     django30: django>=3.0.0,<3.1
     django31: django>=3.1.0,<3.2
@@ -24,6 +27,10 @@ setenv =
     sqlite: TEST_DB_ENGINE=sqlite
     postgres: TEST_DB_ENGINE=postgres
 
+[testenv:py{35,36,37,38,39}-{django11,django22,django30,django31}-postgres]
+docker =
+    db
+
 [testenv:py39-flake8]
 commands = flake8
 deps = flake8
@@ -35,3 +42,26 @@ commands = coverage erase
 commands =
     coverage report
     coverage html
+
+[docker:db]
+image = docker.io/bitnami/postgresql:13-debian-10
+# Environment variables are passed to the container. They are only
+# available to that container, and not to the testenv, other
+# containers, or as replacements in other parts of tox.ini
+environment =
+    POSTGRESQL_USERNAME=test_user
+    POSTGRESQL_PASSWORD=test_user
+    POSTGRESQL_DATABASE=timezone_field_tests
+    POSTGRES_INITDB_ARGS=--encoding=UTF-8
+ports =
+    5599:5432/tcp
+# The healthcheck ensures that tox-docker won't run tests until the
+# container is up and the command finishes with exit code 0 (success)
+healthcheck_cmd = PGPASSWORD=$POSTGRESQL_PASSWORD psql \
+    --user=$POSTGRESQL_USERNAME --dbname=$POSTGRESQL_DATABASE \
+    --host=127.0.0.1 --quiet --no-align --tuples-only \
+    -1 --command="SELECT 1"
+healthcheck_timeout = 1
+healthcheck_retries = 30
+healthcheck_interval = 1
+healthcheck_start_period = 1