jenkins: run tests using postgres (#39583)

tests/settings.py

@@ -1,6 +1,15 @@
+import os
+
 TIME_ZONE = 'Europe/Paris'
 LANGUAGE_CODE = 'en-us'
 
 REST_FRAMEWORK = {
     'DEFAULT_AUTHENTICATION_CLASSES': ['rest_framework.authentication.BasicAuthentication'],
 }
+
+DATABASES = {
+    'default': {
+        'ENGINE': os.environ.get('DB_ENGINE', 'django.db.backends.sqlite3'),
+        'TEST': {'NAME': 'chrono-test-%s' % os.environ.get("BRANCH_NAME", "").replace('/', '-')[:63],},
+    }
+}

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py3-django111-coverage-pylint, py3-django22
+envlist = py3-django111-pg-coverage-pylint, py3-django22-pg
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/chrono/{env:BRANCH_NAME:}
 
 [testenv]
@@ -9,7 +9,9 @@ usedevelop =
 setenv =
   DJANGO_SETTINGS_MODULE=chrono.settings
   CHRONO_SETTINGS_FILE=tests/settings.py
+  BRANCH_NAME={env:BRANCH_NAME:}
   coverage: COVERAGE=--junitxml=junit-{envname}.xml --cov-report xml --cov-report html --cov=chrono/
+  pg: DB_ENGINE=django.db.backends.postgresql_psycopg2
 deps =
   pytest-cov
   pytest-django
@@ -27,6 +29,7 @@ deps =
   pytest-freezegun
   django111: django>=1.11,<1.12
   django22: django>=2.2,<2.3
+  psycopg2-binary
 commands =
   ./getlasso3.sh
   py.test {env:COVERAGE:} {posargs:tests/}