public void testPutAll() throws Exception {
        Map<String, String> m = new HashMap<String, String>();
        m.put("3", "test3");
        m.put("4", "test4");
        map.putAll(m);
        assertThat(map.get("3"), is("test3"));
        assertThat(map.get("4"), is("test4"));
        assertThat(map.size(), is(5));
    }

    /**
     * @throws Exception
     */
    @Test