// 測(cè)試java.lang.Math 
// 必須繼承TestCase 
public class Junit3TestCase extends TestCase { 
public Junit3TestCase() { 
super(); 
} 
// 傳入測(cè)試用例名稱 
public Junit3TestCase(String name) { 
super(name); 
} 
// 在每個(gè)Test運(yùn)行之前運(yùn)行 
@Override 
protected void setUp() throws Exception { 
System.out.println("Set up"); 
} 
// 測(cè)試方法。 
// 方法名稱必須以test開(kāi)頭，沒(méi)有參數(shù)，無(wú)返回值，是公開(kāi)的，可以拋出異常 
// 也即類似public void testXXX() throws Exception {} 
public void testMathPow() { 
System.out.println("Test Math.pow"); 
Assert.assertEquals(4.0, Math.pow(2.0, 2.0)); 
} 
public void testMathMin() { 
System.out.println("Test Math.min"); 
Assert.assertEquals(2.0, Math.min(2.0, 4.0)); 
} 
// 在每個(gè)Test運(yùn)行之后運(yùn)行 
@Override 
protected void tearDown() throws Exception { 
System.out.println("Tear down"); 
} 
} 

Set up 
Test Math.pow 
Tear down 
Set up 
Test Math.min 
Tear down 

testCase.setUp(); 
testCase.testXXX(); 
testCase.tearDown(); 

TestCase test = new Junit3TestCase("mathPow") { 
// 重載 
protected void runTest() throws Throwable { 
testMathPow(); 
}; 
}; 
test.run(); 

TestCase test = new Junit3TestCase("testMathPow"); 
test.run(); 

import junit.framework.Assert; 
import junit.framework.Test; 
import junit.framework.TestCase; 
import junit.framework.TestSuite; 
public class Junit3TestCase extends TestCase { 
//... 
public static Test suite() { 
System.out.println("create suite"); 
TestSuite suite = new TestSuite(); 
suite.addTest(new Junit3TestCase("testMathPow")); 
return suite; 
} 
} 

寫道
create suite
Set up
Test Math.pow
Tear down

// 先創(chuàng)建TestSuite，再添加測(cè)試方法 
TestSuite testSuite = new TestSuite(); 
testSuite.addTest(new Junit3TestCase("testMathPow")); 
// 或者 傳入Class，TestSuite會(huì)掃描其中的測(cè)試方法。 
TestSuite testSuite = new TestSuite(Junit3TestCase.class,Junit3TestCase2.class,Junit3TestCase3.class); 
// 運(yùn)行testSuite 
TestResult testResult = new TestResult(); 
testSuite.run(testResult); 

import org.junit.After; 
import org.junit.AfterClass; 
import org.junit.Assert; 
import org.junit.Before; 
import org.junit.BeforeClass; 
import org.junit.Ignore; 
import org.junit.Test; 
public class Junit4TestCase { 
@BeforeClass 
public static void setUpBeforeClass() { 
System.out.println("Set up before class"); 
} 
@Before 
public void setUp() throws Exception { 
System.out.println("Set up"); 
} 
@Test 
public void testMathPow() { 
System.out.println("Test Math.pow"); 
Assert.assertEquals(4.0, Math.pow(2.0, 2.0), 0.0); 
} 
@Test 
public void testMathMin() { 
System.out.println("Test Math.min"); 
Assert.assertEquals(2.0, Math.min(2.0, 4.0), 0.0); 
} 
// 期望此方法拋出NullPointerException異常 
@Test(expected = NullPointerException.class) 
public void testException() { 
System.out.println("Test exception"); 
Object obj = null; 
obj.toString(); 
} 
// 忽略此測(cè)試方法 
@Ignore 
@Test 
public void testMathMax() { 
Assert.fail("沒(méi)有實(shí)現(xiàn)"); 
} 
// 使用“假設(shè)”來(lái)忽略測(cè)試方法 
@Test 
public void testAssume(){ 
System.out.println("Test assume"); 
// 當(dāng)假設(shè)失敗時(shí)，則會(huì)停止運(yùn)行，但這并不會(huì)意味測(cè)試方法失敗。 
Assume.assumeTrue(false); 
Assert.fail("沒(méi)有實(shí)現(xiàn)"); 
} 
@After 
public void tearDown() throws Exception { 
System.out.println("Tear down"); 
} 
@AfterClass 
public static void tearDownAfterClass() { 
System.out.println("Tear down After class"); 
} 
} 

寫道
Set up before class
Set up
Test Math.pow
Tear down
Set up
Test Math.min
Tear down
Set up
Test exception
Tear down
Set up
Test assume
Tear down
Tear down After class

@Test 
public void testListInEasyMock() { 
List list = EasyMock.createMock(List.class); 
// 錄制過(guò)程 
// 期望方法list.set(0,1)執(zhí)行2次，返回null，不拋出異常 
expect1: EasyMock.expect(list.set(0, 1)).andReturn(null).times(2); 
// 期望方法list.set(0,1)執(zhí)行1次，返回null，不拋出異常 
expect2: EasyMock.expect(list.set(0, 1)).andReturn(1); 
// 執(zhí)行測(cè)試代碼 
EasyMock.replay(list); 
// 執(zhí)行l(wèi)ist.set(0,1)，匹配expect1期望，會(huì)返回null 
Assert.assertNull(list.set(0, 1)); 
// 執(zhí)行l(wèi)ist.set(0,1)，匹配expect1（因?yàn)閑xpect1期望執(zhí)行此方法2次），會(huì)返回null 
Assert.assertNull(list.set(0, 1)); 
// 執(zhí)行l(wèi)ist.set(0,1)，匹配expect2，會(huì)返回1 
Assert.assertEquals(1, list.set(0, 1)); 
// 驗(yàn)證期望 
EasyMock.verify(list); 
} 

import static org.mockito.Mockito.*; 
//創(chuàng)建Mock 
List mockedList = mock(List.class); 
//使用Mock對(duì)象 
mockedList.add("one"); 
mockedList.clear(); 
//驗(yàn)證行為 
verify(mockedList).add("one"); 
verify(mockedList).clear(); 

//也可以Mock具體的類，而不僅僅是接口 
LinkedList mockedList = mock(LinkedList.class); 
//Stub 
when(mockedList.get(0)).thenReturn("first"); // 設(shè)置返回值 
when(mockedList.get(1)).thenThrow(new RuntimeException()); // 拋出異常 
//第一個(gè)會(huì)打印 "first" 
System.out.println(mockedList.get(0)); 
//接下來(lái)會(huì)拋出runtime異常 
System.out.println(mockedList.get(1)); 
//接下來(lái)會(huì)打印"null",這是因?yàn)闆](méi)有stub get(999) 
System.out.println(mockedList.get(999)); 
// 可以選擇性地驗(yàn)證行為，比如只關(guān)心是否調(diào)用過(guò)get(0)，而不關(guān)心是否調(diào)用過(guò)get(1) 
verify(mockedList).get(0); 

public void createReport() throws Exception { 
// 讀取監(jiān)控結(jié)果 
final FileInputStream fis = new FileInputStream(new File("jacoco.exec")); 
final ExecutionDataReader executionDataReader = new ExecutionDataReader(fis); 
// 執(zhí)行數(shù)據(jù)信息 
ExecutionDataStore executionDataStore = new ExecutionDataStore(); 
// 會(huì)話信息 
SessionInfoStore sessionInfoStore = new SessionInfoStore(); 
executionDataReader.setExecutionDataVisitor(executionDataStore); 
executionDataReader.setSessionInfoVisitor(sessionInfoStore); 
while (executionDataReader.read()) { 
} 
fis.close(); 
// 分析結(jié)構(gòu) 
final CoverageBuilder coverageBuilder = new CoverageBuilder(); 
final Analyzer analyzer = new Analyzer(executionDataStore, coverageBuilder); 
// 傳入監(jiān)控時(shí)的Class文件目錄，注意必須與監(jiān)控時(shí)的一樣 
File classesDirectory = new File("classes"); 
analyzer.analyzeAll(classesDirectory); 
IBundleCoverage bundleCoverage = coverageBuilder.getBundle("Title"); 
// 輸出報(bào)告 
File reportDirectory = new File("report"); // 報(bào)告所在的目錄 
final HTMLFormatter htmlFormatter = new HTMLFormatter(); // HTML格式 
final IReportVisitor visitor = htmlFormatter.createVisitor(new FileMultiReportOutput(reportDirectory)); 
// 必須先調(diào)用visitInfo 
visitor.visitInfo(sessionInfoStore.getInfos(), executionDataStore.getContents()); 
File sourceDirectory = new File("src"); // 源代碼目錄 
// 遍歷所有的源代碼 
// 如果不執(zhí)行此過(guò)程，則在報(bào)告中只能看到方法名，但是無(wú)法查看具體的覆蓋（因?yàn)闆](méi)有源代碼頁(yè)面） 
visitor.visitBundle(bundleCoverage, new DirectorySourceFileLocator(sourceDirectory, "utf-8", 4)); 
// 執(zhí)行完畢 
visitor.visitEnd(); 
}