assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("-2.2C"));
        assertThrows(IllegalArgumentException.class, () -> cli.calculateDegreeOfConcurrency("0C"));
    }

    @Test
    void testMavenConfig() throws Exception {
        System.setProperty(
                MavenCli.MULTIMODULE_PROJECT_DIRECTORY, new File("src/test/projects/config").getCanonicalPath());