Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2014-2016 abel533@gmail.com * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.quancheng.mybatis.mapper.test.country; import com.quancheng.mybatis.mapper.mapper.CountryMapper; import com.quancheng.mybatis.mapper.mapper.MybatisHelper; import com.quancheng.mybatis.mapper.model.Country; import org.apache.ibatis.session.SqlSession; import org.junit.Assert; import org.junit.Test; /** * * * @author liuzh */ public class TestSelectCount { /** * */ @Test public void testDynamicSelectCount() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CountryMapper mapper = sqlSession.getMapper(CountryMapper.class); // Assert.assertEquals(183, mapper.selectCount(new Country())); } finally { sqlSession.close(); } } /** * ?null */ @Test public void testDynamicSelectAllByNull() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CountryMapper mapper = sqlSession.getMapper(CountryMapper.class); // Assert.assertEquals(183, mapper.selectCount(null)); } finally { sqlSession.close(); } } /** * ?? */ @Test public void testDynamicSelect() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CountryMapper mapper = sqlSession.getMapper(CountryMapper.class); Country country = new Country(); country.setCountrycode("CN"); Assert.assertEquals(1, mapper.selectCount(country)); } finally { sqlSession.close(); } } /** * ? */ @Test public void testDynamicSelectZero() { SqlSession sqlSession = MybatisHelper.getSqlSession(); try { CountryMapper mapper = sqlSession.getMapper(CountryMapper.class); Country country = new Country(); country.setCountrycode("CN"); country.setCountryname("?");// China Assert.assertEquals(0, mapper.selectCount(country)); } finally { sqlSession.close(); } } }