JUnit accuracy/failure/stress test区别

　　accuracy test(结果准确性测试)

　　例如，Assert.assertEquals(expected, actual)。

　　如果结果不符合期望则产生failure。说明程序逻辑有问题。

　　failure test(抛出异常测试)

　　expected属性用来指示期望抛出的异常类型。例如，@Test(expected = IllegalArgumentException.class)。

　　如果结果不符合期望则产生failure。说明程序逻辑有问题。

　　stress test(运行时间测试)

　　timeout属性用来指示时间上限，单位是毫秒。例如，@Test(timeout = 300)。

　　如果超时则产生error。说明程序本身性能达不到要求。

　　举个例子

 package edu.zju.cst.Student;

 public class Student {

     private String name;

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public String speak(String stm) {

         try {

             Thread.sleep(400);

         } catch (InterruptedException e) {

             e.printStackTrace();

         }

         return name + ": " + stm;

     }

 }

Student.java

 package edu.zju.cst;

 import org.junit.After;

 import org.junit.Before;

 import org.junit.Test;

 import edu.zju.cst.Student.Student;

 import junit.framework.Assert;

 public class StudentAccuracyTest {

     private Student student;

     @Before

     public void setUp() {

         student = new Student();

         student.setName("Tom");

     }

     @Test

     public void testSpeak() {

         String expected = "Tom: hello";

         String actual = student.speak("hell");

         Assert.assertEquals(expected, actual);

     }

     @After

     public void tearDown() {

     }

 }

StudentAccuracyTest.java

 package edu.zju.cst;

 import org.junit.After;

 import org.junit.Before;

 import org.junit.Test;

 import edu.zju.cst.Student.Student;

 public class StudentFailureTest {

     private Student student;

     @Before

     public void setUp() {

         student = new Student();

         student.setName("Tom");

     }

     @Test(expected = IllegalArgumentException.class)

     public void testSpeak() throws IllegalArgumentException {

         student.speak("hell");

     }

     @After

     public void tearDown() {

     }

 }

StudentFailureTest.java

 package edu.zju.cst;

 import org.junit.After;

 import org.junit.Before;

 import org.junit.Test;

 import edu.zju.cst.Student.Student;

 public class StudentStressTest {

     private Student student;

     @Before

     public void setUp() {

         student = new Student();

         student.setName("Tom");

     }

     @Test(timeout = 300)

     public void testSpeak() {

         student.speak("hell");

     }

     @After

     public void tearDown() {

     }

 }

StudentStressTest.java

 package edu.zju.cst;

 import org.junit.runner.RunWith;

 import org.junit.runners.Suite;

 import org.junit.runners.Suite.SuiteClasses;

 @RunWith(Suite.class)

 @SuiteClasses({StudentAccuracyTest.class, StudentFailureTest.class,

     StudentStressTest.class})

 public class TestSuite {

 }

TestSuite.java

　　参考资料

　　JUnit单元测试的几个规律总结

　　JUnit4：Test注解的两个属性：expected和timeout

巴特西

JUnit accuracy/failure/stress test区别

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