Java Unit Test

1  PackageCom.bxw.demo;2 3  Public classCalculator {4      Private Static intResult//for storing run results5          Public voidAddintN) {6result = result +N;7         }8          Public voidSubstract (intN) {9result = Result-1;//result =result-nTen         } One          Public voidMultiplyintN) { A}//This method has not been completed -          Public voidDivideintN) { -result = result/N; the         } -          Public voidSquareintN) { -result = n *N; -         } +          Public voidSquareRoot (intN) { -              for(; ;) ;//dead Loop +         } A          Public voidClear () {//clear the results 0 atresult = 0; -         } -          Public intGetResult () { -             returnresult; -         } -}

Demo

The above code is used to do the Java unit Test.

1  Packagecom.bxw.test;2 3 Import Staticorg.junit.assert.*;4 5 ImportOrg.junit.Before;6 ImportOrg.junit.Ignore;7 Importorg.junit.Test;8 9 ImportCom.bxw.demo.Calculator;Ten  One /** A * Unit Test Demo - * You need to add a @test callout to the method you want to test, indicating that this is a test method.  - * [email protected] indicates that this is an incomplete method, skipping the test the * [email protected] code that must be executed before any test execution - * [email protected] code that must be executed after any test execution - * [email protected] (timeout=1000) Limited time Test -  * @authorAdministrator +  * -  */ +  Public classCalculatortest { A     //create a class to test at      Private StaticCalculator Calculator =NewCalculator (); -          - @Before -          Public voidSetUp ()throwsException { - calculator.clear (); -         } in         //Anomaly Testing -@Test (expected = ArithmeticException.class ) to          Public voidDivideByZero () { +Calculator.divide (0);  -        }  the  * @Test $          Public voidTestadd () {Panax NotoginsengCalculator.add (2); -Calculator.add (3); theAssertequals (5, Calculator.getresult ()); +         } A  the @Test +          Public voidtestsubstract () { -Calculator.add (10); $Calculator.substract (2); $Assertequals (8, Calculator.getresult ()); -         } -  the@Ignore ("Multiply () not yet implemented") - @TestWuyi          Public voidtestmultiply () { the         } -  Wu @Test -          Public voidtestdivide () { AboutCalculator.add (8); $Calculator.divide (2); -Assertequals (4, Calculator.getresult ()); -         } -  A}

test1

This is Calculatortest.java's unit test.

1  Packagecom.bxw.test;2 3 Import Staticorg.junit.assert.*;4 5 Importjava.util.Arrays;6 Importjava.util.Collection;7 8 ImportOrg.junit.Before;9 Importorg.junit.Test;Ten ImportOrg.junit.runner.RunWith; One Importorg.junit.runners.Parameterized; A Importorg.junit.runners.Parameterized.Parameters; -  - ImportCom.bxw.demo.Calculator; the /** - * Parametric testing - * Ex-class plus Runwith -  * @authorBxw +  * -  */ +@RunWith (parameterized.class) A  Public classSquaretest { at     Private StaticCalculator Calculator =NewCalculator (); -     Private intparam; -     Private intresult; - @Before -      Public voidSetUp ()throwsException { - calculator.clear (); in     } - //provide test data to@SuppressWarnings ("Rawtypes") + @Parameters -      Public StaticCollection data () { the         returnArrays.aslist (Newobject[][]{ *{2,4}, ${0,0},Panax Notoginseng{ -3,9} -         }); the     } +     //Constructor A      PublicSquaretest (intParamintresult) { the          This. param =param; +          This. result =result; -     } $ @Test $      Public voidTest () { - calculator.square (param); -System.out.println (param+ "" +result); the assertequals (result, Calculator.getresult ()); -     }Wuyi  the}

Parametric testing

Parametric testing, the test data is written in the form of a two-dimensional array.

1  Packagecom.bxw.test;2 3 Import Staticorg.junit.assert.*;4 5 ImportOrg.junit.Before;6 Importorg.junit.Test;7 ImportOrg.junit.runner.RunWith;8 ImportOrg.junit.runners.Suite;9 Ten /** One * Packaging Test A  * @authorBxw -  * -  */ the@RunWith (Suite.class) - @Suite. suiteclasses ({ -Calculatortest.class, -Squaretest.class + }) -  Public classAllTest { +      A}

Package Test

Write the test class in @suite.suiteclasses

Java Unit Test