activityHelper.setEnvMap(null);
        Map<String, String> envMap = activityHelper.getEnvMap();
        assertNotNull(envMap);
    }

    @Test
    public void test_init_withDockerEnvironment() {
        Map<String, String> dockerEnv = new HashMap<>();
        dockerEnv.put("FESS_APP_TYPE", "docker");
        activityHelper.setEnvMap(dockerEnv);
        activityHelper.init();