@Test
public void testUnnecessaryOverride() {

    Map<ArtifactSelector, Artifact> override = new HashMap<>();
    override.put(selector, null);
    config.setOverride(override);
    ConfigurationChecker checker = new ConfigurationChecker(reporter, config);
    checker.process(artifacts);
    assertThat(reporter.getProcessingReport().getMessageList()).isNotEmpty();
}