?? JUNIT 4中,有幾個地方要注意一下的,歸納之
1

@Test (expected=ArithmeticException. class )?

public ? void ?testDivide()?{ ??

????assertEquals( 3 ,Math.divide( 9 , 3 ));???
???Math.divide( 10 , 0 );? //除數不能為0，會拋出異常? ??
?? } ??
? junit4中不用try catach了,用這樣聲明 “@Test(expected=ArithmeticException.class)”Junit4 就會檢查此方法是否拋出ArithmeticException異常，
2)
?? 套件方面
??

import ?org.junit.runner.RunWith; ??

import ?org.junit.runners.Suite; ??

import ?org.junit.runners.Suite.SuiteClasses; ??

@RunWith (Suite. class ) ??

@SuiteClasses ({a. class , ??

????????b. class }) ??

?? public ? class ?Util4Suite?{ ??

}??
則a,b兩個類都要運行測試

3) 參數化測試
?? import ? static ?org.junit.Assert.assertEquals;

import ?org.junit.Test;

import ?org.junit.runner.RunWith;

import ?org.junit.runners.Parameterized;

import ?org.junit.runners.Parameterized.Parameters;

?

import ?java.util.Arrays;

import ?java.util.Collection;

?

@RunWith(Parameterized. class )

public ? class ?SquareTest? ... {

?

???? private ? static ?Calculator?calculator? = ? new ?Calculator();

???? private ? int ?param;

???? private ? int ?result;

?

????@Parameters

???? public ? static ?Collection?data()? ... {

???????? return ?Arrays.asList( new ?Object[][] ... {

???????????????? ... { 2 ,? 4 } ,

???????????????? ... { 0 ,? 0 } ,

???????????????? ... {－ 3 ,? 9 } ,

????????} );

????}

?

?

// 構造函數，對變量進行初始化

???? public ?SquareTest( int ?param,? int ?result)? ... {

???????? this .param? = ?param;

???????? this .result? = ?result;

????}

?

????@Test

???? public ? void ?square()? ... {

????????calculator.square(param);

????????assertEquals(result,?calculator.getResult());

????}

?

}

junit 4學習