ci: run tests (#48990)

Jenkinsfile

@@ -2,7 +2,20 @@
 
 pipeline {
     agent any
+    options {
+        disableConcurrentBuilds()
+    }
     stages {
+        stage('Unit Tests') {
+            steps {
+                sh 'tox -rv'
+            }
+            post {
+                always {
+                    mergeJunitResults()
+                }
+            }
+        }
         stage('Packaging') {
             steps {
                 script {

tox.ini

@@ -0,0 +1,32 @@
+[tox]
+envlist = py3-junit-coverage
+toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/combo-plugin-gnm/{env:BRANCH_NAME:}
+
+[testenv]
+usedevelop =
+  coverage: True
+  nocoverage: False
+setenv =
+  DJANGO_SETTINGS_MODULE=combo.settings
+  PASSERELLE_SETTINGS_FILE=tests/settings.py
+  DB_ENGINE=django.db.backends.postgresql_psycopg2
+  SETUPTOOLS_USE_DISTUTILS=stdlib
+  coverage: COVERAGE=--cov-report xml --cov-report html --cov=combo_plugin_gnm/
+  junit: JUNIT=--junitxml=junit-{envname}.xml
+deps =
+  pytest
+  pytest-cov
+  pytest-django
+  pytest-freezegun
+  WebTest
+  mock<4
+  httmock
+  psycopg2-binary
+  psycopg2
+  vobject
+  django-ratelimit<3
+  django>=2.2,<2.3
+  https://git.entrouvert.org/debian/django-ckeditor.git/snapshot/django-ckeditor-master.tar.gz
+  https://git.entrouvert.org/combo.git/snapshot/combo-master.tar.gz
+commands =
+  py.test {posargs: {env:JUNIT:} {env:COVERAGE:} tests/}