junit基础学习市公开课一等奖省赛课微课金奖课件.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2021/10/3,#,JUnit 介绍,Testing framework written by Erich Gamma and Kent Beck,Open Source,Hosted on SourceForge,Language support,Smalltalk,Java,C+,Perl,Python,etc.,IDE Support,JBuilder,VisualAge,etc.,1/47,What is Software Testing?,The execution of code using combinations of,input,and,state,selected to,reveal bugs,.,The process of devising and executing a,test suite,that attempts to,cause failures,increasing our,confidence,that failures are unlikely.,2/47,软件测试工具分类,分,类,实例,reviews&inspections,Compuware DevPartner,test planning,Rational Suite TestStudio,test design&development,test execution&evaluation,capture/playback,coverage analysis,Compuware DevPartner,Rational Suite TestStudio,Borland Optimizeit,memory testing,Compuware DevPartner,Rational Suite TestStudio,test case management,sumulations&performance,profiler,test support,3/47,JUnit 定位,JUnit is,JUnit is not,scope,单元测试,综合测试，组合测试,testware,模块,完整系统,level,工具,方法,轮,test case,手动产生,自,动产生,test driver/script,部份手,写,全自,动,4/47,JUnit Framework,5/47,junit,How to Test with JUnit?,Foo,TestCase,exercise,1.*,TestRunner,run,1.*,FooTest,test,1,test,2,6/47,Questions,怎样,测试？strategy,多少测试才够？coverage,流程？process,工具影响？,medium is message,7/47,Design Goals of JUnit,Easy to use,Requires no more work than absolutely necessary to write a new test,Leverages existing tests to create new ones,Reusable fixtures to run different tests,Retains values of tests over time,Combines tests from various authors and run them together without fear of interference,8/47,Case Study,自动产生测试框架,Using Borland JBuilder 6.0,最,简单测试实例,9/47,实例一,Foo,junit,TestCase,exercise,1.*,FooTest,test,1,test,2,10/47,实例一：简单待测程序,public class,Money,private int fAmount;,private String fCurrency;,public,Money,(int amount,String currency),fAmount=amount;,fCurrency=currency;,public Money,add,(Money m),return new Money(amount()+m.amount(),currency();,public int,amount,()return fAmount;,public String,currency,()return fCurrency;,11/47,实例一：产生测试框架,1/7,Borland JBuilder 6.0,12/47,实例一：产生测试框架,2/7,Borland JBuilder 6.0,13/47,实例一：产生测试框架,3/7,Borland JBuilder 6.0,14/47,实例一：产生测试框架,4/7,Borland JBuilder 6.0,15/47,实例一：产生测试框架,5/7,Borland JBuilder 6.0,16/47,实例一：产生测试框架,6/7,Borland JBuilder 6.0,17/47,实例一：产生测试框架,7/7,import junit.framework.*;,public class,MoneyTest,extends,TestCase,public,MoneyTest,(String s)super(s);,protected void,setUp,(),protected void,tearDown,(),public void,testAdd,(),int val1=0;,String val2=STRING0;,Money money=new Money(val1,val2);,Money val1=null,/*todo fill in non-null value*/,;,Money moneyRet=money.add(val1);,/*todo:Insert test code here.,Use assertEquals(),for example.*/,18/47,Lesson Learned,Code a little,test a little,19/47,junit,实例二,Foo,TestCase,exercise,1.*,TestRunner,run,FooTest,test,1,test,2,20/47,实例二：测试码,public class,Money,implements Cloneable,private int fAmount;,private String fCurrency;,public,Money,(int amount,String currency)/*.*/,public Money,add,(Money m),if(m=null)return(Money)clone();,return new Money(amount()+m.amount(),currency();,public Object,clone,()/*.*/,public boolean,equals,(Object obj)/*.*/,public int,amount,()/*.*/,public String,currency,()/*.*/,21/47,实例二：测试码,1/2,import junit.framework.*;,public class,MoneyTest,extends,TestCase,public,MoneyTest,(String s)super(s);,public void,testNullAdd,(),String curr=NTD;,int val1=;,Money money1=new Money(val1,curr);,Money money2=null;,/null value,Money money3=money1.add(money2);,Assert.assertEquals(money1,money3);,22/47,实例二：测试码,2/2,public void,testSimpleAdd,(),String curr=NTD;,int val1=;,int val2=345;,int val3=val1+val2;,Money money1=new Money(val1,curr);,Money money2=new Money(val2,curr);,Money money3=money1.add(money2);,assertEquals(money3,new Money(val3,curr);,23/47,java -cp,lib,junit.jar;.junit.swingui.TestRunner MoneyTest,Success,24/47,Failure,1/2,25/47,Failure,2/2,26/47,Error,1/2,27/47,Error,2/2,28/47,Lessons Learned,Generate&exercise test case(s),Write,test,(),method(s),Verify,Choose a,Assert.assert,(),Choose a,TestRunner,junit.textui.TestRunner,junit.swingui.TestRunner,Failure vs.error,29/47,Case Study,Fixture/context 管理,Test suite,与进入点,Grouping by tasks,Configuration management,Regression testing,30/47,junit,实例三：,Foo,TestCase,exercise,1.*,TestRunner,run,1.*,FooTest,test,1,test,2,setUp,(),tearDown,(),31/47,实例三：测试码,1/2,import junit.framework.*;,public class,MoneyTest,extends,TestCase,private Money money1,money2,money3;,public,MoneyTest,(String s)/*.*/,protected void,setUp,(),String curr=NTD;,int val1=;,int val2=345;,money1=new Money(val1,curr);,money2=new Money(val2,curr);,money3=new Money(val1+val2,curr);,32/47,实例三：测试码,2/2,protected void,tearDown,(),public void,testNullAdd,(),Money money10=money1.add(null);,/null value,assertEquals(money1,money10);,public void,testSimpleAdd,(),Money money10=money1.add(money2);,assertEquals(money3,money10);,33/47,Lessons Learned,Fixture,Overrides,setUp(),Overrides,tearDown(),Each,test(),method is isolated,34/47,junit,实例四,Foo,TestCase,exercise,1.*,TestRunner,run,1.*,FooTest,test,1,test,2,test case,TestSuite,test suite,35/47,实例四：测试码,1/3,import junit.framework.*;,public class,MoneyTest,extends,TestCase,private Money money1,money2,money3;,public,MoneyTest,(String s)/*.*/,protected void,setUp,()/*.*/,public void,testNullAdd,()/*.*/,public void,testSimpleAdd,()/*.*/,36/47,实例四：测试码,2/3,/interactive mode,/entry point of the whole test suite!,/*,/Version 1,public static Test,suite(),TestSuite,suite=new TestSuite();,suite.,addTest,(new MoneyTest(testNullAdd);,suite.,addTest,(new MoneyTest(testSimpleAdd);,return suite;,*/,/Version 2,public static Test,suite,(),return new,TestSuite,(MoneyTest.class);,37/47,实例四：测试码,3/3,/batch mode,/entry point of the whole test suite!,public static void,main(String args),junit.textui.TestRunner.run(suite();,38/47,Lessons Learned,Test case suite,Write a,suite(),as the interactive mode entry point,Write a,main(),as the batch mode entry point,39/47,实例五：Composite Pattern,40/47,实例五：before grouping,Foo,test suite,exercise,FooTest,test,1,test,2,test,3,test case,41/47,实例五：grouping by tasks,Foo,exercise,FooTest,basic test,test,1,test,2,test suite,random test,test,3,monkey test,stress test,42/47,实例五：composite test suites,public class,Money_test,extends TestCase,public,MoneyTest,(String s)/*.*/,public static Test,suite,(),TestSuite suite=new TestSuite();,suite.addTest(,Money_test_basic.suite(),);,suite.addTest(,Money_test_random.suite(),);,suite.addTest(,Money_test_monkey.suite(),);,return suite;,public static void,main,(String args),junit.textui.TestRunner.run(suite();,43/47,44/47,Lessons Learned,Grouping by configuration policy,By tasks,By persons,By revisions,Configuration management,Naming scheme,Process,Scripts,45/47,小结：JUnit 使用四部曲,Fixture,Overrides,setUp(),or,tearDown(),Exercise,Writes,test(),Verify,Uses,Assert.assert,(),Suite management,Writes,suite(),and/or,main(),46/47,其它主題,Reports,TestResult,Extensions for various application domains,47/47,