Junit4中的新断言assertThat的使用方法

import static org.hamcrest.MatcherAssert.*;  
  import static org.hamcrest.CoreMatchers.*;     
  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> user = new ArrayList<User>();
                  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<String,User> userMap = new HashMap<String,User>();
                  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));
          }
  }