using JMock to write unit test for a simple spring JDBC DAO

Posted by Quincy on Stack Overflow See other posts from Stack Overflow or by Quincy
Published on 2012-04-12T16:55:48Z Indexed on 2012/04/12 17:29 UTC
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I'm writing an unit test for spring jdbc dao. The method to test is:

public long getALong() {
return simpleJdbcTemplate.queryForObject("sql query here", new RowMapper<Long>() {
  public Long mapRow(ResultSet resultSet, int i) throws SQLException {
    return resultSet.getLong("a_long");
  }
});

}

Here is what I have in the test:

public void testGetALong() throws Exception {
    final Long result = 1000L;
    context.checking(new Expectations() {{
      oneOf(simpleJdbcTemplate).queryForObject("sql_query", new RowMapper<Long>() {
        public Long mapRow(ResultSet resultSet, int i) throws SQLException {
          return resultSet.getLong("a_long");
        }
      });
      will(returnValue(result));
    }});
    Long seq = dao.getALong();
    context.assertIsSatisfied();
    assertEquals(seq, result);
  }

Naturally, the test doesn't work (otherwise, I wouldn't be asking this question here). The problem is the rowmapper in the test is different from the rowmapper in the DAO. So the expectation is not met.

I tried to put with around the sql query and with(any(RowMapper.class)) for the rowmapper. It wouldn't work either, complains about "not all parameters were given explicit matchers: either all parameters must be specified by matchers or all must be specified by values, you cannot mix matchers and values"

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