Junit使用
Posted dzcici
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首先需要jar包
http://mvnrepository.com/artifact/junit/junit/4.12
在IDEA使用的话 把原有的功能进行测试
//判读字符串第一个不重复的字符 @Override public char getStr(String str) { //indexOf();lastIndexOf(); if (str == null || str.length() == 0 || str.equals("") || str.trim().isEmpty()) { return 0; } Map<Character, Integer> counts = new LinkedHashMap<Character, Integer>( str.length()); for (char c : str.toCharArray()) { counts.put(c, counts.containsKey(c) ? counts.get(c) + 1 : 1); } for (Map.Entry<Character, Integer> entry : counts.entrySet()) { if (entry.getValue() == 1) { return entry.getKey(); } } return 0; } //随机字符串 @Override public String getRandStr(int length) { //定义一个字符串（A-Z，a-z，0-9）即62位； String str = "zxcvbnmlkjhgfdsaqwertyuiopQWERTYUIOPASDFGHJKLZXCVBNM1234567890"; //由Random生成随机数 Random random = new Random(); StringBuilder sb = new StringBuilder(); //长度为几就循环几次 for (int i = 0; i < length; ++i) { //产生0-61的数字 int number = random.nextInt(62); //将产生的数字通过length次承载到sb中 sb.append(str.charAt(number)); } //将承载的字符转换成字符串 return sb.toString(); }
如何使用Junit进行测试呢？
快捷键Ctrl + Shift + T
选择create
购选所需方法就可以了
需要选择Junit
即可运行测试
绿色说明通过
需要测试的方法
package Test; public class StringUtilImpl implements StringUtil { //Rot13加密解密 @Override public String getRot13(String str) { if (str == null || str.length() == 0 || str.equals("") || str.trim().isEmpty()) { return null; } else { char[] chr = str.toCharArray(); StringBuffer buffer =new StringBuffer(); for (int i = 0; i < chr.length; i++) { if ((chr[i] >= ‘A‘) && (chr[i] <= ‘Z‘)) { chr[i] += 13; if (chr[i] > ‘Z‘) { chr[i] -= 26; } } else if ((chr[i] >= ‘a‘) && (chr[i] <= ‘z‘)) { chr[i] += 13; if (chr[i] > ‘z‘) { chr[i] -= 26; } }else if((chr[i] >= ‘0‘) && (chr[i] <= ‘9‘)){ chr[i] +=5; if(chr[i] > ‘9‘){ chr[i] -= 10; } } // and return it to sender buffer.append(chr[i]); } return buffer.toString(); } } //字符串翻转 @Override public String getReverse(String str) { if (str == null || str.length()==0 || str.equals("") || str.trim().isEmpty()) { return null; } char[] arr = str.toCharArray(); String reverse = ""; for (int i = arr.length - 1; i >= 0; i--) { reverse += arr[i]; } return reverse; } //判读字符串是否为空 @Override public boolean getIsEmpty(String str) { if (str == null || str.length()==0 || "".equals(str) || str.trim().isEmpty()) { return true; } return false; } }
测试类
package DemoJunit; import Test.StringUtilImpl; import org.junit.Assert; import org.junit.Ignore; import org.junit.Test; import Test.*; import static org.junit.Assert.*; public class StringUtilImplTest { StringUtil s = new StringUtilImpl(); @Test //@Ignore("该客户没有给钱不给他密码加密所以给他挖个坑...") public void getRot13() { Assert.assertEquals(s.getRot13("abc大Das是的3"), "nop大Qnf是的8"); Assert.assertEquals(s.getRot13("ynxsfy"), "lakfsl"); Assert.assertEquals(s.getRot13("I‘m from guangdong"), "V‘z sebz thnatqbat"); Assert.assertEquals(s.getRot13("StringUtil"), "FgevatHgvy"); Assert.assertEquals(s.getRot13(" "), null); Assert.assertEquals(s.getRot13(null), null); } @Test public void getReverse() { Assert.assertEquals(s.getReverse("are you ok?"), "?ko uoy era"); Assert.assertEquals(s.getReverse("I me here"), "ereh em I"); Assert.assertEquals(s.getReverse(""), null); Assert.assertEquals(s.getReverse(null), null); } @Test public void getIsEmpty() { String str = ""; Assert.assertEquals(s.getIsEmpty(null), true); Assert.assertEquals(s.getIsEmpty(" "), true); Assert.assertEquals(s.getIsEmpty(""), true); Assert.assertEquals(s.getIsEmpty(str), true); Assert.assertEquals(s.getIsEmpty("GG"), false); } }
下面来介绍 Maven项目SSM结合Junit
这里无需添加架包在使用Maven项目字段配置好Junit
在项目的src根目录下面创建一个Test文件夹
然后点击右键选择
然后文件夹就会变绿色了
使用：
在service选择需要测试的方法然后会自动在Test文件下面生成测试类；
代码：
package com.gdnf.ssm.service; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.log4j.spi.LoggerFactory; import org.junit.*; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.apache.log4j.*; import java.util.logging.Logger; import static org.junit.Assert.*; public class BookServiceImplTest { static ClassPathXmlApplicationContext context; static Log logger ; @BeforeClass public static void init() { context = new ClassPathXmlApplicationContext("spring_root.xml"); logger = LogFactory.getLog(""); } @AfterClass public static void after() { logger.info("结束了"); } //@Ignore @Test public void getCount() { BookService bean = context.getBean(BookService.class); logger.info(bean.getCount()); logger.info(bean.getBookAll()); } }
结果
这里配置的Log4j是输出到控制台
"C:Program FilesJavajdk1.8.0_181injava" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:二学年工具包idea文件IntelliJ IDEA 2017.3.5libidea_rt.jar=64358:D:二学年工具包idea文件IntelliJ IDEA 2017.3.5in" -Dfile.encoding=UTF-8 -classpath "D:二学年工具包idea文件IntelliJ IDEA 2017.3.5libidea_rt.jar;D:二学年工具包idea文件IntelliJ IDEA 2017.3.5pluginsjunitlibjunit-rt.jar;D:二学年工具包idea文件IntelliJ IDEA 2017.3.5pluginsjunitlibjunit5-rt.jar;C:Program FilesJavajdk1.8.0_181jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_181jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_181jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_181jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_181jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_181jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_181jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_181jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_181jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_181jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_181jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_181jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_181jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_181jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_181jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_181jrelibjce.jar;C:Program FilesJavajdk1.8.0_181jrelibjfr.jar;C:Program FilesJavajdk1.8.0_181jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_181jrelibjsse.jar;C:Program FilesJavajdk1.8.0_181jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_181jrelibplugin.jar;C:Program FilesJavajdk1.8.0_181jrelib esources.jar;C:Program FilesJavajdk1.8.0_181jrelib t.jar;D:二学年学习项目my_ssm arget est-classes;D:二学年学习项目my_ssm argetclasses;C:UsersDZ.m2 epositoryjunitjunit4.12junit-4.12.jar;C:UsersDZ.m2 epositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-web5.1.0.RELEASEspring-web-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-beans5.1.0.RELEASEspring-beans-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-core5.1.0.RELEASEspring-core-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-jcl5.1.0.RELEASEspring-jcl-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-aop5.1.0.RELEASEspring-aop-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-jdbc5.1.0.RELEASEspring-jdbc-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-tx5.1.0.RELEASEspring-tx-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-webmvc5.1.0.RELEASEspring-webmvc-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-context5.1.0.RELEASEspring-context-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgspringframeworkspring-expression5.1.0.RELEASEspring-expression-5.1.0.RELEASE.jar;C:UsersDZ.m2 epositoryorgmybatismybatis3.4.6mybatis-3.4.6.jar;C:UsersDZ.m2 epositoryorgmybatismybatis-spring1.3.2mybatis-spring-1.3.2.jar;C:UsersDZ.m2 epositoryorgmariadbjdbcmariadb-java-client2.3.0mariadb-java-client-2.3.0.jar;C:UsersDZ.m2 epositorycommchangec3p0 .9.5.2c3p0-0.9.5.2.jar;C:UsersDZ.m2 epositorycommchangemchange-commons-java .2.11mchange-commons-java-0.2.11.jar;C:UsersDZ.m2 epositoryjavaxservletjstl1.2jstl-1.2.jar;C:UsersDZ.m2 epositorycomfasterxmljacksoncorejackson-databind2.9.7jackson-databind-2.9.7.jar;C:UsersDZ.m2 epositorycomfasterxmljacksoncorejackson-annotations2.9.0jackson-annotations-2.9.0.jar;C:UsersDZ.m2 epositorycomfasterxmljacksoncorejackson-core2.9.7jackson-core-2.9.7.jar;C:UsersDZ.m2 epositorylog4jlog4j1.2.17log4j-1.2.17.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.gdnf.ssm.service.BookServiceImplTest DEBUG [main] - ==> Preparing: select count(name) from book DEBUG [main] - ==> Parameters: DEBUG [main] - <== Total: 1 九月 30, 2018 2:23:59 下午 com.gdnf.ssm.service.BookServiceImplTest getCount 信息: 10 DEBUG [main] - ==> Preparing: select * from book DEBUG [main] - ==> Parameters: DEBUG [main] - <== Total: 10 九月 30, 2018 2:23:59 下午 com.gdnf.ssm.service.BookServiceImplTest getCount 信息: [Book{id=1, name=‘干法‘, cnt=25}, Book{id=2, name=‘Java程序设计‘, cnt=8}, Book{id=7, name=‘哲学‘, cnt=0}, Book{id=8, name=‘小说‘, cnt=13}, Book{id=9, name=‘啊哈哈‘, cnt=13}, Book{id=10, name=‘cc‘, cnt=11}, Book{id=11, name=‘卓悦‘, cnt=57}, Book{id=12, name=‘他们最幸福‘, cnt=1}, Book{id=13, name=‘admin‘, cnt=123456789}, Book{id=14, name=‘我不‘, cnt=6}] 九月 30, 2018 2:23:59 下午 com.gdnf.ssm.service.BookServiceImplTest after 信息: 结束了 Process finished with exit code 0
package com.gdnf.ssm.service;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.log4j.spi.LoggerFactory;
import org.junit.*;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.apache.log4j.*;
import java.util.logging.Logger;
import static org.junit.Assert.*;
public class BookServiceImplTest {
static ClassPathXmlApplicationContext context;
static Log logger ;
@BeforeClass
public static void init() {
context = new ClassPathXmlApplicationContext("spring_root.xml");
logger = LogFactory.getLog("");
}
@AfterClass
public static void after() {
logger.info("结束了");
}
//@Ignore
@Test
public void getCount() {
BookService bean = context.getBean(BookService.class);
logger.info(bean.getCount());
logger.info(bean.getBookAll());
}
}
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