Add tests for https://gitlab.com/caosdb/caosdb-server/-/issues/145

Summary

Tests for caosdb-server!62 (merged) (https://gitlab.com/caosdb/caosdb-server/-/issues/145) and also https://gitlab.com/caosdb/caosdb-server/-/issues/147

Please merge together with caosdb-server!62 (merged)

Focus

The MR caosdb-server!62 (merged) proposed to remove the "casting to integer". These tests show that that would be a bug and also test the fix for https://gitlab.com/caosdb/caosdb-server/-/issues/145

Check List for the Author

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• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
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Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
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.gitlab-ci.yml

@@ -137,7 +137,9 @@ test:
       - time docker load < /image-cache/caosdb-pyint-testenv-${CI_COMMIT_REF_NAME}.tar || true
       - time docker load < /image-cache/caosdb-${REFTAG}.tar || time docker load < /image-cache/caosdb-dev.tar || true
       - time docker load < /image-cache/$MARIADBVERSION.tar || true
+      # Pull the server image.
       - docker pull $CI_REGISTRY/caosdb/src/caosdb-deploy:$CAOSDB_TAG || CAOSDB_TAG=dev
+      # Pull the image for the test runs.
       - docker pull $CI_REGISTRY_IMAGE
 
         # Here, the server and the mysql backend docker are being started
@@ -189,10 +191,6 @@ build-testenv:
   image: docker:20.10
   stage: setup
   timeout: 2h
-  only:
-    - schedules
-    - web
-    - pushes
   needs: []
   script:
       - df -h