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

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CHANGELOG.md

@@ -40,6 +40,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Tests for caosdb-pylib#61
 * Test for [caosdb-server#136](https://gitlab.com/caosdb/caosdb-server/-/issues/136)
 * Test for [caosdb-server#141](https://gitlab.com/caosdb/caosdb-server/-/issues/141)
+* Test for [caosdb-server#145](https://gitlab.com/caosdb/caosdb-server/-/issues/145)
 
 ### Changed (for changes in existing functionality)