junit 4.11配合Hamcrest

Hamcrest下载地址为https://code.google.com/p/hamcrest/downloads/list

提供了不少增强junit测试的方法，在junit 4.11中，已经加进来了

import java.util.HashMap;
import java.util.Map;

import org.hamcrest.Matchers;
import org.junit.Assert;
import org.junit.Test;



public class TestByHamcrest {
    /**
     * 如果用的是JUnit-4.10,那么这里可以使用org.junit.Assert类,它提供了assertThat的功能
     * 如果用的是JUnit低版本,如MyEclipse6.5自带的JUnit-4.3.1则未提供Assert.assertThat功能
     * 这时可以使用hamcrest-all-1.3.jar自带的org.hamcrest.MatcherAssert.assertThat()方法
     */
    @Test
    public void testHamcrest() {
        // 50是否大于20
        Assert.assertThat(50, Matchers.greaterThan(20));
        // 50是否大于或等于50
        Assert.assertThat(50, Matchers.greaterThanOrEqualTo(50));

        // 50是否即大于20又小于60(allOf方法类似于Java中的&&)
        Assert.assertThat(50, Matchers.allOf(Matchers.greaterThan(20), Matchers.lessThan(60)));
        // 50是否大于20或小于40(anyOf方法类似于Java中的||)
        Assert.assertThat(50, Matchers.anyOf(Matchers.greaterThan(20), Matchers.lessThan(40)));

        // 测试"abc.txt"是否以"txt"结束
        Assert.assertThat("abc.txt", Matchers.endsWith("txt"));
        Assert.assertThat("abc.txt", Matchers.startsWith("ab"));
        Assert.assertThat("abc.txt", Matchers.containsString("c.t"));
        Assert.assertThat(22 + "aa", Matchers.hasToString("22aa"));
        Assert.assertThat("http://blog.csdn.net/jadyer", Matchers.instanceOf(String.class));
        Assert.assertThat("http://blog.csdn.net/jadyer", Matchers.notNullValue());
        Assert.assertThat(null, Matchers.nullValue());

        // 针对集合的测试
        String[] users = {"玄玉", "Jadyer"};
        Assert.assertThat(users, Matchers.hasItemInArray("玄玉"));
        Map<String, String> userMap = new HashMap<String, String>();
        userMap.put("11", "玄玉");
        userMap.put("22", "Jadyer");
        userMap.put("33", "http://blog.csdn.net/jadyer");
        Assert.assertThat(userMap, Matchers.hasKey("22"));
        Assert.assertThat(userMap, Matchers.hasValue("http://blog.csdn.net/jadyer"));
    }