junit怎么写

Posted 2023-04-09

源代码：求当前日期的下一天
package helloworld;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class GetNextDate
public String getDate(Date inputDate)
SimpleDateFormat f2=null;
GregorianCalendar nextDate = new GregorianCalendar();
nextDate.setTime(inputDate);
nextDate.add(Calendar.DAY_OF_MONTH, 1);
Date date= nextDate.getTime();
return date.toString();


public static void main(String[] args)

Date inputDate = new Date();
GetNextDate gd = new GetNextDate();
String newDate = gd.getDate(inputDate);
System.out.println(newDate);

我的junit代码有点问题，请高手帮忙写一下

下面是我做项目时的例子，希望对你有所帮助。

/*
*@author ougaoyan ,date:2008-10-19
*/
package test;

import java.util.Date;

import junit.framework.TestCase;
import app.DA.BookDA;
import app.PD.Book;

public class TestBookDA extends TestCase

public TestBookDA(String name)
super(name);

// public Book(int bookID, String cip, String name, String author,String press, String category, int quantity, int reborrowable,int borrowerID,Date startDate)
public void testEditBook()
Book book1 = new Book(1,"123456","信号","张建","某出版社","电信",1,1,1,new Date());
Book book2 = new Book(-1,"123456","信号","张建","某出版社","电信",1,1,1,new Date());
Book book3 = new Book(99,"123456","信号","张建","某出版社","电信",1,1,1,new Date());
Book book4 = new Book(1,"123456","信号","张建","某出版社","电信",1,1,1,new Date());
assertEquals(true,BookDA.editBook(book1));
assertEquals(false,BookDA.editBook(book2));
assertEquals(true,BookDA.editBook(book3));
assertEquals(false,BookDA.editBook(book4));

////Book(int borrowerID, Date startDate, int reBorrowable, String cip)
public void testAddBook()
Book book1 = new Book(0,"234567","信发号","张建","某出版社","电信",1,1,1,new Date());
Book book2 = new Book(0,"123456","信的号","张建","某出版社","电信",1,1,1,new Date());
Book book3 = new Book(0,"99999","信i号","张建","某出版社","电信",1,1,1,new Date());
assertEquals(true,BookDA.addBook(book1));
assertEquals(true,BookDA.addBook(book2));
assertEquals(false,BookDA.addBook(book3));


public static void main(String[] args)

junit.textui.TestRunner.run(TestBookDA.class);
System.out.println(new TestBookDA("TestBookDA").countTestCases());




/*
*@author ougaoyan ,date:2008-10-19
*/
package test;

import java.util.Date;
import java.util.Vector;
import junit.framework.TestCase;
import app.DA.CipDA;
import app.PD.Cip;

public class TestCipDA extends TestCase
public TestCipDA (String name)
super(name);


public void testFindBooksByName()
String name1 = "数据库";
String name2 = "小小";
Vector vector1 = CipDA.findBooksByName(name1);
Vector vector2 = CipDA.findBooksByName(name2);
assertNotNull(vector1);
assertNull(vector2);


public void testFindBooksByAuthor()
String name1 = "欧阳";
String name2 = "小小";
Vector vector1 = CipDA.findBooksByAuthor(name1);
Vector vector2 = CipDA.findBooksByAuthor(name2);
assertNotNull(vector1);
assertNull(vector2);


public void testFindBooksByCategory()
String name1 = "计算机";
String name2 = "计 算 机";
String name3 = "wucimin";
Vector vector1 = CipDA.findBooksByCategory(name1);
Vector vector2 = CipDA.findBooksByCategory(name2);
Vector vector3 = CipDA.findBooksByCategory(name3);
assertNotNull(vector1);
assertNotNull(vector2);
assertNull(vector3);

// public void testEditCip()

//
//public Cip(String cip, String name, String author, String press,String category, int quantity, int reserverID,Date reservedDate)
public void testAddCip()
Cip cip1 = new Cip("2244","新加书","新者","出版社","计算机",3,0,new Date());
//Cip cip2 =new Cip(null,"新加书","新者","出版社","计算机",3,0,new Date());
Cip cip3 =new Cip("22er3rr3rt4t43t43t3t34t34t34t44","新加书","新者","出版社","计算机",3,0,new Date());
assertEquals(true,CipDA.addCip(cip1));
//assertEquals(false,CipDA.addCip(cip2));
assertEquals(false,CipDA.addCip(cip3));

public void testEditCip()
Cip cip1 = new Cip("2244","新加书","新者","出版社","计算机",3,0,new Date());
Cip cip2 =new Cip(null,"新加书","新者","出版社","计算机",3,0,new Date());
Cip cip3 =new Cip("22er3rr3rt4t43t43t3t34t34t34t44","新加书","新者","出版社","计算机",3,0,new Date());
assertEquals(true,CipDA.editCip(cip1));
assertEquals(false,CipDA.editCip(cip2));
assertEquals(false,CipDA.editCip(cip3));


public static void main(String[] args)

junit.textui.TestRunner.run(TestCipDA.class);
System.out.println(new TestCipDA("TestCipDA").countTestCases());




/*
*@author ougaoyan ,date:2008-10-19
*/
package test;
import java.util.Date;
import java.util.Vector;

import junit.framework.TestCase;
import app.DA.LibManagerDA;
import app.PD.LibManager;
import app.PD.Student;

public class TestLibManagerDA extends TestCase

public TestLibManagerDA(String name)
super(name);

public void testCheck()
String userName1 = "1234";
String password1 = "111111";
String userName2 = "";
String password2= "";
String userName3 = "1234";
String password3 = "111";
LibManager libmanager = new LibManager(1,userName1,password1,"w");
assertEquals(libmanager.getID(), LibManagerDA.check(userName1,password1).getID());
assertEquals(libmanager.getName(), LibManagerDA.check(userName1,password1).getName());
assertEquals(null, LibManagerDA.check(userName2,password2));
assertEquals(null, LibManagerDA.check(userName3,password3));


public void testUpdatePwd()
int id1 =1,id2=99;
String qpwd="234567";
assertEquals(true,LibManagerDA.updatePwd(id1, qpwd));
assertEquals(false,LibManagerDA.updatePwd(id2, qpwd));

public void testSearchLibManager()
LibManager libmanager1 = new LibManager(1,"1234","111111","w");
LibManager libmanager2 = new LibManager(2,"2345","23456","x");
assertEquals(libmanager1.getID(), LibManagerDA.searchLibManager("1234").getID());
assertEquals(libmanager2.getID(), LibManagerDA.searchLibManager("2345").getID());
assertNull(LibManagerDA.searchLibManager(""));

public void testQuantity()
String cip1 = "123456";
String cip2 = "234567";
assertEquals(1,LibManagerDA.getBookQuantity(cip1));
assertEquals(3,LibManagerDA.getBookQuantity(cip2));
assertEquals(-1,LibManagerDA.getBookQuantity(""));

public void testEditLibManager()
LibManager libmanager1 = new LibManager(1,"1234","111111","w");
LibManager libmanager2 = new LibManager(2,"2345","23456","x");
//LibManager libmanager3 = new LibManager(90,"123456677","0","y");
LibManager libmanager4 = new LibManager(3,"123456677","0","e");
assertEquals(true, LibManagerDA.editLibManager(libmanager1));
assertEquals(true,LibManagerDA.editLibManager(libmanager2));
//assertEquals(false,LibManagerDA.editLibManager(libmanager3));
assertEquals(false,LibManagerDA.editLibManager(libmanager4));

public void testAddLibManager()
LibManager libmanager1 = new LibManager(-1,"1234","0","z");
LibManager libmanager2 = new LibManager(-1,"2345","0","x");
LibManager libmanager3 = new LibManager(-1,"12hh3456677","0","y");
assertEquals(true, LibManagerDA.addLibManager(libmanager1));
assertEquals(true,LibManagerDA.addLibManager(libmanager2));
assertEquals(false,LibManagerDA.addLibManager(libmanager3));

public void testGetBookCip()
int bookid1 =1;
int bookid2 =4;
int bookid3 = -1;
String exceptedcip1 = "123456";
String exceptedcip2="234567";
String exceptedcip3 = null;
assertEquals(exceptedcip1, LibManagerDA.getBookCip(bookid1));
assertEquals(exceptedcip2, LibManagerDA.getBookCip(bookid2));
assertEquals(exceptedcip3, LibManagerDA.getBookCip(bookid3));


public void testCheckReserved()
String cip1 = "123456";
String cip2 = "234567";
int studentid1 = 1;
int studentid2 = 2;
int studentid3 = 99;
assertEquals(true, LibManagerDA.checkReserved(cip1,studentid1));
assertEquals(true, LibManagerDA.checkReserved(cip2,studentid2));
assertEquals(false, LibManagerDA.checkReserved(cip1,studentid2));
assertEquals(false,LibManagerDA.checkReserved(cip2,studentid1));
assertEquals(false,LibManagerDA.checkReserved(cip2,studentid3));
assertEquals(false,LibManagerDA.checkReserved(cip1,studentid3));


//public static boolean borrowOPeration(int quantity, int bookID, int borrowerID,int reservedNum, int borrowedNum,Date startDate)
public void testBorrowOPeration()
int quantity1 = 1;
int bookID1 = 2;
int borrowerID1 = 3;
int reservedNum1 = 1;
int borrowedNum1 = 4;
int quantity2 = 1;
int bookID2 = 1;
int borrowerID2 = 3;
int reservedNum2 = 0;
int borrowedNum2 = 7;
assertEquals(true,LibManagerDA.borrowOperation(quantity1, bookID1, borrowerID1, reservedNum1, borrowedNum1, new Date()));
assertEquals(false,LibManagerDA.borrowOperation(quantity2, bookID2, borrowerID2, reservedNum2, borrowedNum2, new Date()));

//public static boolean returnOperation (int quantity, int bookID, int borrowerID, int borrowedNum, Date startDate, int reborrowable)
public void testReturnOperation()
int quantity1 = 1;
int bookID1 = 1;
int borrowerID1 = 1;
int borrowedNum1 = 4;
int reborrowable1 = 0;
int quantity2 = 1;
int bookID2 = 2;
int borrowerID2 = 2;
int borrowedNum2 = 7;
int reborrowable2 = 0;
assertEquals(true,LibManagerDA.returnOperation(quantity1, bookID1, borrowerID1, borrowedNum1, new Date(),reborrowable1));
assertEquals(true,LibManagerDA.returnOperation(quantity2, bookID2, borrowerID2, borrowedNum2,new Date(), reborrowable2));

public void testGetBookQuantity()
String cip1 = "123456";
String cip2 = "234567";
int quantity1 = 5;
int quantity2 = 3;
assertEquals(quantity1,LibManagerDA.getBookQuantity(cip1));
assertEquals(quantity2,LibManagerDA.getBookQuantity(cip2));


public void testFindBill()
String userName1 = "111111";
String userName2 = "222222";
float bill1 = 0;
float bill2 = 0;
assertEquals(bill1,LibManagerDA.findBill(userName1),0.000001);
assertEquals(bill2,LibManagerDA.findBill(userName2),0.000001);

public void testClearBill()
String userName1 = "111111";
String userName2 = "222222";
assertEquals(true,LibManagerDA.clearBill(userName1));
assertEquals(true,LibManagerDA.clearBill(userName2));

public void testSelectAllLibManager()
Vector allLibManager = new Vector();
allLibManager = LibManagerDA.selectAllLibManager();
for(int i = 0;i <allLibManager.size();i++ )
LibManager libManager = (LibManager)allLibManager.get(i);
System.out.println(libManager.getName());


public void testSecelctAllStudent()
Vector allStudent = new Vector();
allStudent = LibManagerDA.secelctAllStudent();
for(int i = 0;i <allStudent.size();i++ )
Student student = (Student)allStudent.get(i);
System.out.println(student.getName());


public void testStartTimes()
Vector times = new Vector();
times = LibManagerDA.startTimes(0);
for(int i = 0;i < times.size();i ++)
System.out.println((Date)times.get(i));

public void testUpdateStuBill()



public static void main(String[] args)

junit.textui.TestRunner.run(TestLibManagerDA.class);
System.out.println(new TestLibManagerDA("dd ").countTestCases());





/*
*@author ougaoyan ,date:2008-10-19
*/
package test;

import java.util.Date;
import java.util.Vector;

import junit.framework.TestCase;
import app.DA.StudentDA;
import app.PD.Book;
import app.PD.Cip;
import app.PD.Student;

public class TestStudentDA extends TestCase

public TestStudentDA(String name)
super(name);

/*public Student(int id, int borrowedNum, int reservedNum, float bill,
String userName, String password, String name, String department,
String unit, String sex) */
public void testCheck()
Student student1 = new Student(1,0,0,0,"111111","123456","张三","软件","0602","男");
//Student student2 = new Student(1,0,0,0,"111111","123","张三","软件","0602","男");
//Student student3 = new Student(2,0,0,0,"11111","123456","张三","软件","0602","男");
assertEquals(student1.getId(),StudentDA.check("111111","123456").getId());
assertEquals(true,student1.getId()==StudentDA.check("111111","123456").getId());
assertEquals(null,StudentDA.check("111111","12356"));

//assertEquals(false,);
//assertEquals(false,);

public void testUpdatePwd()
int id1 = 1;
int id2 = 2;
int id3 = -1;
String password1 = "123456";
String password2 = "234567";
String password3 = "1234555";
assertEquals(true,StudentDA.updatePwd(id1, password1));
assertEquals(true,StudentDA.updatePwd(id2, password2));
assertEquals(false,StudentDA.updatePwd(id3, password3));


public void testSearchStudent()
Student student1 = new Student(1,0,0,0,"111111","123456","张三","软件","0602","男");
assertEquals(true,student1.getId()==StudentDA.searchStudent("111111").getId());
assertEquals(null,StudentDA.searchStudent("111"));

public void testEditStudent()
Student student1 = new Student(1,0,0,0,"111111","123456","张三","软件","0602","女");
Student student2 = new Student(1,0,0,0,"11111333555555555556631","123456","张三","软件","0602","女");
assertEquals(true,StudentDA.editStudent(student1));
assertEquals(false,StudentDA.editStudent(student2));

public void testAddStudent()
Student student1 = new Student(5,0,0,0,"111111","123456","张三","软件","0602","女");
Student student2 = new Student(1,0,0,0,"1111133331","123456","张三","软件","0602","女");
assertEquals(true,StudentDA.addStudent(student1));
//assertEquals(false,StudentDA.addStudent(student2));

public static void testGetBorrowBookInfor()
int studentid1 = 1;
int studentid2 = 2;
int studentid3 = 5;
Vector vector1 = new Vector();
Vector vector2 = new Vector();
Vector vector3 = new Vector();
vector1 = StudentDA.getBorrowBookInfor(studentid1);
vector2 = StudentDA.getBorrowBookInfor(studentid2);
vector3 = StudentDA.getBorrowBookInfor(studentid3);
//System.out.println(vector1);
assertNotNull(((Book)vector1.get(0)).getName());


public void testGetReserveBookInfor()
int studentid1 = 1;
Vector vector1 = new Vector();
vector1 = StudentDA.getReserveBookInfor(studentid1);
assertEquals("数据库",((Cip)vector1.get(0)).getCategory());

//public static boolean reserveOperation(int reserverID1, String cip1, int quantity1, int reservedNum1, Date reservedDate1 )
public void testReserveOperation()
assertEquals(true,StudentDA.reserveOperation(1, "123456", 1, 2, new Date()));

//void cancelReservation(int reserverID1,String cip1, int quantity1, int reserveNum1)
public void testCancelReservation()
assertTrue(StudentDA.cancelReservation(1, "1234567", 1, 3));

//public static boolean updateReborrowable(int bookID, int reborrowable1, int studentID,Date startDate1)
public void testUpdateReborrowable()
assertTrue(StudentDA.updateReborrowable(2,0,1,new Date()));

public static void main(String[] args)

//junit.textui.TestRunner.run(TestStudentDA.class);
//System.out.println(new TestStudentDA("TestStudentDA").countTestCases());
testGetBorrowBookInfor();





/*
*@author ougaoyan ,date:2008-10-19
*/
package test;
import junit.framework.Test;
import junit.framework.TestSuite;

public class AllTests

public static Test suite()
TestSuite suite = new TestSuite("Test for test");
suite.addTestSuite(TestLibManagerDA.class);
suite.addTestSuite(TestBookDA.class);
suite.addTestSuite(TestCipDA.class);
suite.addTestSuite(TestStudentDA.class);
//suite.addTestSuite(TestLibManagerDA.class);
//$JUnit-END$
return suite;


参考技术A 到Junit.org下一个Junit4.5，把junit-4.5.jar加到classpath里；
用这个框架：
import junit.framework.*;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;

public class NewEmptyJUnitTest

public NewEmptyJUnitTest()


@BeforeClass
public static void setUpClass() throws Exception


@AfterClass
public static void tearDownClass() throws Exception


@Before
public void setUp()
//进行测试前要跑的代码放这里


@After
public void tearDown()
//进行测试后要跑的代码放这里


// The methods must be annotated with annotation @Test. For example:
//
// @Test
// public void hello()



在测试方法前加上@Test，在里头用断言方法进行测试。

另：
Junit java doc:
http://junit.org/junit/javadoc/4.5/
具体的断言方法都放在 junit.framework.Assert这个类里头，你可以参考一下。
用junit测试最好带上集成开发工具，因为集成开发工具里的测试运行都是自动的，你只要专注于你要跑的测试代码就行了。
常用的Java集成开发工具(都是免费的)：
NetBeans下载地址：NetBeans.org (我用的就是这个，有中文版)
eclipse下载地址：eclipse.org （3.4以下有中文版) 参考技术B extends TestCase都没有，你怎么写junit?

JUnit代码测试是啥？怎么写代码？

参考技术A 分类: 电脑/网络 >> 程序设计 >> 其他编程语言
解析:

JUnit是Java进行单元测试的一个框架, 需要下载junit, 3.8版本和后来的4.0以后版本编写测试的方法略有不同,

在3.8.2中需要导入junit.framework.中的类, 进行测试的类必须继承自TestCase类, 测试方法名称中需要含test字样, 可以在setup和teardown函数中管理一些每个测试函数都需要的资源比如数据库连接等,在测试函数中使用assert开头的函数来进行测试代码开发.以下是从junit文档中摘出的范例:

import junit.framework.Test;

import junit.framework.TestCase;

import junit.framework.TestSuite;

/**

* Some simple tests.

*

*/

public class SimpleTest extends TestCase

protected int fValue1;

protected int fValue2;

protected void setUp()

fValue1= 2;

fValue2= 3;



public static Test suite()

/*

* the type safe way

*

TestSuite suite= new TestSuite();

suite.addTest(

new SimpleTest("add")

protected void runTest() testAdd();



);

suite.addTest(

new SimpleTest("testDivideByZero")

protected void runTest() testDivideByZero();



);

return suite;

*/

/*

* the dynamic way

*/

return new TestSuite(SimpleTest.class);



public void testAdd()

double result= fValue1 + fValue2;

// forced failure result == 5

assertTrue(result == 6);



public void testDivideByZero()

int zero= 0;

int result= 8/zero;

result++; // avoid warning for not using result



public void testEquals()

assertEquals(12, 12);

assertEquals(12L, 12L);

assertEquals(new Long(12), new Long(12));

assertEquals("Size", 12, 13);

assertEquals("Capacity", 12.0, 11.99, 0.0);



public static void main (String[] args)

junit.textui.TestRunner.run(suite());





在4.0.2中的变化是:

测试需要@.junit.Test的Annotation标记,其他部分也使用了Annotation标记,setup和teardown使用@.junit.Before 和@.junit.After, 在eclipse3.1的环境中不支持4.0.2, 可以使用junit 4.0.2中提供的adapter类来帮助eclipse内置的junit发现新版本的测试函数