Java Unit Test (JUNIT)

The most basic module testing

1: First create a Java project and create a student data class in the project that is being unit tested, as follows:

 PackageUnitTest; Public classStudent {PrivateString name; PrivateString sex; Private intHigh ; Private intAge ; PrivateString School;  PublicStudent (string name, String sex,intHighintAge , String School) {         This. Name =name;  This. Sex =sex;  This. High =High ;  This. Age =Age ;  This. School =School; }     PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     PublicString Getsex () {returnsex; }     Public voidsetsex (String sex) { This. Sex =sex; }     Public intGethigh () {returnHigh ; }     Public voidSethigh (intHigh ) {         This. High =High ; }     Public intGetage () {returnAge ; }     Public BooleanSetage (intAge ) {        if(Age > 25) {            return false; } Else {             This. Age =Age ; return true; }    }     PublicString Getschool () {returnSchool; }     Public voidSetschool (String school) { This. School =School; }}

Student

2: under Eclipse Unit test this class:

First import the JUnit package: Select Java Project , right-click---> select Properties----> Choose Java Build Path----in the window > click Add Library on the right side---- > in the pop-up window list, select JUnit----> Next----->junit 4 (I'm using junit 4)---->finish

So the JUnit 4 package is done, and the next step is to create the test class:

Put the test class and the tested class in a different package (or in the same package, here just to make a difference), the code is as follows:

Test Class 1:

 Packageunittestexample;Importunittest.student;Importjunit.framework.TestCase; Public classStudentTest01extendsTestCase {Student teststudent; //This method is called before each test method (test case) is executed .@Overrideprotected voidSetUp ()throwsException {//TODO auto-generated Method Stub        Super. SetUp (); Teststudent=NewStudent ("Li Peng", "Boy", 172, 21, "East China Jiaotong University"); System.out.println ("SetUp ()"); }    //This method calls after each test method is executed@Overrideprotected voidTearDown ()throwsException {//TODO auto-generated Method Stub        Super. TearDown (); System.out.println ("TearDown ()"); }    //test cases, testing the Getsex () method of the Person object     Public voidTestgetsex () {assertequals ("Boy.", Teststudent.getsex ()); System.out.println ("Testgetsex ()"); }    //test the Getage () method of the Person object     Public voidTestgetage () {assertequals (21st, Teststudent.getage ()); System.out.println ("Testgetage ()"); }}

StudentTest01

Test Class 2:

 Packageunittestexample;Importunittest.student;Importjunit.framework.TestCase; Public classStudentTest02extendsTestCase {PrivateStudent teststudent; @Overrideprotected voidSetUp ()throwsException {//TODO auto-generated Method Stub        Super. SetUp (); Teststudent=NewStudent ("Xiao Ming", "Boy", 170, 23, "Shanghai Polytechnic"); } @Overrideprotected voidTearDown ()throwsException {//TODO auto-generated Method Stub        Super. TearDown (); }     Public voidTestsetage () {asserttrue (Teststudent.setage (21st)); }     Public voidTestgetschool () {//The expected value is not the same as the actual value, and the test fails (Failure)Assertequals ("Nanchang University", Teststudent.getschool ()); }     Public voidTestgetname () {assertequals ("Little Flower", Teststudent.getname ()); }}

StudentTest02

Of course, if you need to test both of these two test classes together, it can be implemented by the Testsuite class, which is equivalent to a suite that can add all the test classes and run tests together.

Comprehensive test class:

 Packageunittestexample;Importunittest.student;Importjunit.framework.Test;ImportJunit.framework.TestSuite; Public classAllTest {//static Persontest p = new Persontest (); //static Persontest p1 = new Persontest ();     Public StaticTest Suite () {TestSuite Suite=NewTestSuite ("Test for Com.phicomme.test"); //suite.addtest (P); //suite.addtest (p1);Suite.addtestsuite (StudentTest02.class); Suite.addtestsuite (StudentTest01.class); returnSuite; }}

alltest

Finally, test the above three classes separately (select the class you want to test----> right-click---->run as---->junit test):

STUDENTTEST01 class Test results:

StudentTest02 class Test results:

AllTest class Test results:

Java Unit Test (JUNIT)