.java

@Test
    public void testBindMapperPrivateMethod() {
        /**
         * Won't work: mybatis doesn't know about the service
         */
        final Module myBatisModule = new MyBatisModule() {
            @Override
            protected void initialize() {
                environmentId(ENV);
                install(JdbcHelper.H2_EMBEDDED);
                bindDataSourceProviderType(PooledDataSourceProvider.class);
                bindTransactionFactoryType(JdbcTransactionFactory.class);
                addMapperClass(DummyMapper.class);
            }
        };
        final Injector injector = Guice.createInjector(
                Stage.DEVELOPMENT, new Module[]{myBatisModule});
        injector.getInstance(DummyService.class).insertValueCallingPrivateMethod(1);
    }