import static org.junit.Assert.assertNull;
            import static org.junit.Assert.assertEquals;

            public class JansiTest {
                @Test
                public void canUseCustomJansiVersion() {
                    assertNull(System.getProperty("${JANSI_LIBRARY_PATH_SYS_PROP}"));
                    assertEquals(Ansi.class.getPackage().getImplementationVersion(), "$JANSI_VERSION");
                }