check if all database migrations were created from django model

.gitlab-ci.yml

@@ -16,6 +16,16 @@ variables:
     - pip install -r requirements.txt --default-timeout=180 -i https://pypi.lcsb.uni.lu/simple/
     - pip install -r requirements-dev.txt --default-timeout=180 -i https://pypi.lcsb.uni.lu/simple/
 
+test_migrations_created:
+    <<: *test_definition
+    services:
+         - postgres:latest
+    script:
+         - cp "local_settings_ci.py" "smash/smash/local_settings.py"
+         - cd smash
+         - python manage.py makemigrations --check --dry-run
+         - test 1 = $(python manage.py makemigrations --check --dry-run | grep 'No changes detected' |wc -l)
+
 test_postgres:
     <<: *test_definition
     services: