assertNotNull(currentTime);
        final long now = System.currentTimeMillis();
        assertTrue(Math.abs(currentTime.getTime() - now) < 1000);
    }

    @Test
    public void test_getCurrentTimeAsLong() {
        final long currentTime = systemHelper.getCurrentTimeAsLong();
        final long now = System.currentTimeMillis();
        assertTrue(Math.abs(currentTime - now) < 1000);
    }

    @Test