integrate doctest to CI

.gitlab-ci.yml

@@ -13,6 +13,8 @@ build:
     - docker login -u gitlab-ci-token -p "$CI_JOB_TOKEN" "$CI_REGISTRY"
     - docker push "$CI_REGISTRY_IMAGE/qbcontainer"
 
+
+
 lint:
   stage: test
   tags:
@@ -32,11 +34,23 @@ type-checking:
     - python3 -m mypy --install-types --non-interactive querybuilder/ 
 
 test:
+  services:
+    - postgres
+  variables:
+    POSTGRES_DB: custom_db
+    POSTGRES_USER: custom_user
+    POSTGRES_PASSWORD: custom_pass
+  image: postgres
+  script:
   stage: test
   tags:
     - ci.inria.fr
     - medium
   image: "$CI_REGISTRY_IMAGE/qbcontainer"
   script:
-    - pytest --doctest-modules --cov=querybuilder querybuilder
+    - export PGPASSWORD=$POSTGRES_PASSWORD
+    - export PGHOST="postgres"
+    - export PGDATABASE=$POSTGRES_DB
+    - export PGUSER=$POSTGRES_USER
+    - pytest --doctest-modules --cov=querybuilder
   coverage: '/TOTAL.*\s+(\d+%)$/'