On the master branch:
$ src/test/test_bitcoin -l test_suite -t banman_tests
Running 1 test case...
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Test case banman_tests/file did not check any assertions
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This PR suggests to use proper Boost macros.
ping @MarcoFalke as an author of the test.
This seems fine, but we also currently use a mixture of assert() and BOOST() macros throughout multiple other unit tests.