Junit4中的新断言assertThat的是用方法

如果需要是用assertThat需要在项目中引入junit4的jar包,以及hamcrest-core.jar和hamcrest-library.jar
下面是常用断言的代码

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import static org.hamcrest.Matchers.*;
  import static org.junit.Assert.assertThat;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.junit.Before;
  import org.junit.Test;
  
  import com.lyh.share.model.User;
  
  public class UserDaoTest {
          
          private User test1;
          private User test2;
          
          @Before
          public void init(){
                  test1 = new User();
                  test1.setUsername( "tt1" );
                  test1.setPassword( "123" );
                  test1.setShares( 50 );
                  test2 = new User();
                  test2.setUsername( "tt2" );
                  test2.setPassword( "321" );
                  test2.setShares( 20 );
          }
          
          @Test
          public void findUser(){
                  
                  /**数值匹配**/
                  //测试变量是否大于指定值
                  assertThat(test1.getShares(), greaterThan( 50 ));
                  //测试变量是否小于指定值
                  assertThat(test1.getShares(), lessThan( 100 ));
                  //测试变量是否大于等于指定值
                  assertThat(test1.getShares(), greaterThanOrEqualTo( 50 ));
                  //测试变量是否小于等于指定值
                  assertThat(test1.getShares(), lessThanOrEqualTo( 100 ));
                  
                  //测试所有条件必须成立
                  assertThat(test1.getShares(), allOf(greaterThan( 50 ),lessThan( 100 )));
                  //测试只要有一个条件成立
                  assertThat(test1.getShares(), anyOf(greaterThanOrEqualTo( 50 ), lessThanOrEqualTo( 100 )));
                  //测试无论什么条件成立(还没明白这个到底是什么意思)
                  assertThat(test1.getShares(), anything());
                  //测试变量值等于指定值
                  assertThat(test1.getShares(), is( 100 ));
                  //测试变量不等于指定值
                  assertThat(test1.getShares(), not( 50 ));
                  
                  /**字符串匹配**/
                  String url = "http://www.taobao.com" ;
                  //测试变量是否包含指定字符
                  assertThat(url, containsString( "taobao" ));
                  //测试变量是否已指定字符串开头
                  assertThat(url, startsWith( "http://" ));
                  //测试变量是否以指定字符串结尾
                  assertThat(url, endsWith( ".com" ));
                  //测试变量是否等于指定字符串
                  assertThat(url, equalTo( "http://www.taobao.com" ));
                  //测试变量再忽略大小写的情况下是否等于指定字符串
                  assertThat(url, equalToIgnoringCase( "http://www.taobao.com" ));
                  //测试变量再忽略头尾任意空格的情况下是否等于指定字符串
                  assertThat(url, equalToIgnoringWhiteSpace( "http://www.taobao.com" ));
                  
                  
                  /**集合匹配**/
                  
                  List user = new ArrayList();
                  user.add(test1);
                  user.add(test2);
                  
                  //测试集合中是否还有指定元素
                  assertThat(user, hasItem(test1));
                  assertThat(user, hasItem(test2));
  
                  /**Map匹配**/
                  Map userMap = new HashMap();
                  userMap.put(test1.getUsername(), test1);
                  userMap.put(test2.getUsername(), test2);
                  
                  //测试map中是否还有指定键值对
                  assertThat(userMap, hasEntry(test1.getUsername(), test1));
                  //测试map中是否还有指定键
                  assertThat(userMap, hasKey(test2.getUsername()));
                  //测试map中是否还有指定值
                  assertThat(userMap, hasValue(test2));
          }
          
  }

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