    @Test
    public void testSingleTourist() throws RiverServiceException {

        Assert.assertEquals(10, cutter.getEmptySeats());

        boolean result;

        result = rs.embarkTourists(6);
        Assert.assertTrue(result);
        Assert.assertEquals(4, cutter.getEmptySeats());

        result = rs.embarkTourists(6);
        Assert.assertFalse(result);
        Assert.assertEquals(4, cutter.getEmptySeats());

        result = rs.embarkTourists(4);
        Assert.assertTrue(result);
        Assert.assertEquals(0, cutter.getEmptySeats());
    }