Decouple int test

The integration test test_basic uses resources from unittests, that are there no longer needed.

• check what it uses
• make it available in the test directly
• check that it still runs

marked this issue as related to #93 (closed)

mentioned in commit 3a8531e7

mentioned in merge request !176 (merged)

mentioned in merge request !177 (merged)

mentioned in merge request !178 (merged)