@Before
    public void setUp() throws Exception {
        System.setProperty("log4j.debug", "true");
        System.setProperty(DozerConstants.DEBUG_SYS_PROP, "true");
        System.setProperty(SettingsKeys.CONFIG_FILE_SYS_PROP, SettingsDefaults.LEGACY_PROPERTIES_FILE);

        mapper = DozerBeanMapperBuilder.buildDefault();
    }
This class should be inherited by all functional tests
core/src/test/java/com/github/dozermapper/core/functional_tests/AbstractFunctionalTest.java