CppUnit使用和源碼解析


前言

  CppUnit是一個開源的單元測試框架,支持Linux和Windows操作系統,在linux上可以直接進行源碼編譯,得到動態庫和靜態庫,直接鏈接就可以正常使用,在Windows上可以使用VC直接進行編譯,非常便於調試。CppUnit的源碼框架被運用到了Java和Python等語言中,使用非常廣泛,熟悉了一種語言下的CppUnit使用方法,其他語言測試框架也不在話下,本文以cppunit-1.12.1為例進行演示和說明。

 

一個例子

Linux下CppUnit源碼編譯和安裝

  • 解壓源碼文件到cppunit-1.12.1目錄
  • cd cppunit-1.12.1
  • ./configure --prefix=安裝路徑(必須是絕對路徑)
  • make 
  • make install

 

編輯測試代碼

一共三個文件main.cpp、simpleTest.h、simpleTest.c,目錄下文件的組織結構如下所示:

三個文件的源碼如下:

//main.cpp文件

#include "cppunit/TestResultCollector.h"
#include "cppunit/TextOutputter.h"
#include "cppunit/XmlOutputter.h"
#include "cppunit/CompilerOutputter.h"
#include "cppunit/TestResult.h"
#include "cppunit/TestRunner.h"
#include "cppunit/extensions/TestFactoryRegistry.h"
#include <cstdlib>
#include <ostream>

int main()
{
    CppUnit::TestResult r;
    CppUnit::TestResultCollector rc;
    r.addListener(&rc); // 准備好結果收集器

    CppUnit::TestRunner runner; // 定義執行實體
    runner.addTest(CppUnit::TestFactoryRegistry::getRegistry("alltest").makeTest());
    runner.run(r); // 運行測試

    //CppUnit::TextOutputter o(&rc, std::cout);
    //o.write(); // 將結果輸出
	
	//std::ofstream file;
	//file.open("./UnitTest.xml");
	//CppUnit::XmlOutputter xo(&rc, file);
	//xo.write();
	
	CppUnit::CompilerOutputter co(&rc, std::cout);
	co.write();

    return rc.wasSuccessful() ? 0 : -1;
}
//SimpleTest .h文件

#include "cppunit/extensions/HelperMacros.h"

class SimpleTest : public CppUnit::TestFixture
{
    CPPUNIT_TEST_SUITE(SimpleTest);
    CPPUNIT_TEST(test1);
	CPPUNIT_TEST(test2);
    CPPUNIT_TEST_SUITE_END();
public:
	void test1();
	void test2();
};
//simpleTest.cpp文件

#include "simpleTest.h"
#include <string>
#include <iostream>
#include "cppunit/TestCase.h"
#include "cppunit/TestAssert.h"

CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(SimpleTest, "alltest");

void SimpleTest::test2()
{
    CPPUNIT_ASSERT(3 == 3);
}

void SimpleTest::test1()
{
    CPPUNIT_ASSERT(2 == 2);
}

編譯命令如下:

g++ main.cpp simpleTest.cpp -o test -I /home/chusiyong/cppunit/install/include -L /home/chusiyong/cppunit/install/lib -Wl,-Bstatic -lcppunit -Wl,-Bdynamic -ldl  

運行可執行文件,結果如下:

OK (2)  

表示所有用例都執行成功

 

源碼分析

1.主要類的繼承關系

  • Test相關類

 

    • Test類作為所有測試用例的基類,是一個抽象類,含有純虛函數
    • Test類主要的方法是run方法
    • 采用Composition設計模式(類比文件和文件夾的設計方法)
    • TestComposition類主要是實現類名的處理,並提供start和end的處理(配合TestListener使用)
    • TestSuite類非常重要,里面可以包含多個Test類,使用Vector的方式保存
    • TestFixture類主要提供setUp和tearDown方法,用於運行測試用例前和測試用例后執行
    • TestLeaf類主要是實現Test類中的部分方法,在體現通用性的同時做安全措施,重寫必要的virtual方法(實現Test類中模板方法中調用的函數),繼承該類的子類只能是單個測試用例,不能包含子測試用例
    • TestCase類是主要的測試類,每一個TestCase表示一個測試用例
    • TestCaller類主要用來生成TestCase實例,將TestFixture類中的每一個測試方法,變成一個單獨的TestCase實例(很重要),然后將TestCase實例加入到TestSuite中
//TestComposite.h
class CPPUNIT_API TestComposite : public Test
{
public:
  TestComposite( const std::string &name = "" );
  ~TestComposite();
  void run( TestResult *result );
  std::string getName() const;
private:
  const std::string m_name;
};

//TestComposite.cpp
void TestComposite::run( TestResult *result )
{
  ...
  doRunChildTests( result );
  ...
}

void TestComposite::doRunChildTests( TestResult *controller)
                                       //關鍵方法,調用每一個子用例的run方法
{
  int childCount = getChildTestCount();
  for ( int index =0; index < childCount; ++index )
  {
    if ( controller->shouldStop() )
      break;

    getChildTestAt( index )->run( controller );
  }
}

std::string TestComposite::getName() const //獲取測試用例名稱
{
  return m_name;
}
//TestSuite.h
class CPPUNIT_API TestSuite : public TestComposite
{
public:
  TestSuite( std::string name = "" );
  ~TestSuite();
  void addTest( Test *test ); //添加測試用例
  virtual void deleteContents(); //刪除測試用例
  int getChildTestCount() const; //根據vector獲取子用例個數
  Test *doGetChildTestAt( int index ) const;//根據index獲取子用例對象
private:
  CppUnitVector<Test *> m_tests; //保存子用例
};

//TestSuite.cpp
void TestSuite::deleteContents() //刪除所有測試用例
{
  int childCount = getChildTestCount();
  for ( int index =0; index < childCount; ++index )
    delete getChildTestAt( index );

  m_tests.clear();
}

void TestSuite::addTest( Test *test ) //添加測試用例
{ 
  m_tests.push_back( test ); 
}

int TestSuite::getChildTestCount() const //獲取子測試用例的個數
{
  return m_tests.size();
}

Test *TestSuite::doGetChildTestAt( int index ) const//根據index獲取子用例對象
{
  return m_tests[index];
}
//TestLeaf.h 沒有實現run方法,不能生成實例對象
class CPPUNIT_API TestLeaf: public Test
{
public:
  int countTestCases() const;    //Test類中的checkIsValidIndex方法調用
  int getChildTestCount() const;//Test類中的checkIsValidIndex方法調用
  Test *doGetChildTestAt( int index ) const;//Test類中的getChildTestAt方法調用
};

//TestLeaf.cpp
int TestLeaf::countTestCases() const
{
  return 1;
}

int TestLeaf::getChildTestCount() const
{
  return 0;
}

Test *TestLeaf::doGetChildTestAt( int index ) const
{
  checkIsValidIndex( index );
  return NULL;    // never called, checkIsValidIndex() always throw.
}
//TestFixture.h
class CPPUNIT_API TestFixture //接口
{
public:
  virtual ~TestFixture() {};
  virtual void setUp() {};//運行用例前調用
  virtual void tearDown() {};//運行用例后調用
};
//TestCase.h
class CPPUNIT_API TestCase : public TestLeaf, public TestFixture
{
public:
    TestCase( const std::string &name );
    TestCase();
    ~TestCase();
    virtual void run(TestResult *result); //實現純虛方法
    std::string getName() const; //獲取用例名稱
    virtual void runTest(); //子類實現
    
private:
    TestCase( const TestCase &other ); 
    TestCase &operator=( const TestCase &other ); 
    
private:
    const std::string m_name;
};

//TestCase.cpp
//說明:運行測試用例的時候,是采用的保護性運行方式,保證一個用例執行失敗后續的用例可以繼續執行
//采用try{...}catch{...}的模式,失敗就拋異常,然后記錄,繼續執行
void TestCase::run( TestResult *result )
{
  result->startTest(this);
  if ( result->protect( TestCaseMethodFunctor( this, &TestCase::setUp ), this, "setUp() failed" ))
  {
    result->protect( TestCaseMethodFunctor( this, &TestCase::runTest ), this);
  }

  result->protect( TestCaseMethodFunctor( this, &TestCase::tearDown ), this, "tearDown() failed");
  result->endTest( this );
}
    • TestCaseMethodFunctor類:函數對象,作用就是封裝方法,便於使用
class TestCaseMethodFunctor : public Functor
{
public:
  typedef void (TestCase::*Method)();

  TestCaseMethodFunctor( TestCase *target,
                         Method method )
     : m_target( target )
     , m_method( method )
  {
  }

  bool operator()() const //重載()操作符
  {
    (m_target->*m_method)(); //直接調用測試用例的地方
    return true;
  }

private:
  TestCase *m_target;
  Method m_method;
};
template <class Fixture>
class TestCaller : public TestCase
{ 
public:
  TestCaller( std::string name, TestMethod test ) :
	    TestCase( name ), 
	    m_ownFixture( true ),
	    m_fixture( new Fixture() ),
	    m_test( test )
  {
  }

  TestCaller(std::string name, TestMethod test, Fixture& fixture) :
	    TestCase( name ), 
	    m_ownFixture( false ),
	    m_fixture( &fixture ),
	    m_test( test )
  {
  }
    
  TestCaller(std::string name, TestMethod test, Fixture* fixture) :
	    TestCase( name ), 
	    m_ownFixture( true ),
	    m_fixture( fixture ),
	    m_test( test )
  {
  }
    
  ~TestCaller() 
  {
    if (m_ownFixture)
      delete m_fixture;
  }

  void runTest() 
  {
	(m_fixture->*m_test)(); //運行測試用例的地方
  }  

  void setUp()
  { 
  	m_fixture->setUp (); 
  }

  void tearDown()
  { 
	  m_fixture->tearDown (); 
  }

  std::string toString() const
  { 
  	return "TestCaller " + getName(); 
  }

private: 
  TestCaller( const TestCaller &other ); 
  TestCaller &operator =( const TestCaller &other );

private:
  bool m_ownFixture;
  Fixture *m_fixture;   //new出來的測試對象,即TestCase
  typedef void (Fixture::*TestMethod)(); 
  TestMethod m_test;//Testcase中的一個測試方法
};
  • TestListener相關類

    • TestListener類和TestResult類之間是采用觀察者模式,TestResult類將測試用例的執行結果通知給TestListener類
    • TestListener類將保持的結果,通過OutPutter類顯示出來
    • TestSuccessListener類主要作用是實現多線程安全
class CPPUNIT_API TestListener
{
public:
  virtual ~TestListener() {}
  virtual void addFailure( const TestFailure & /*failure*/ ) {}
    //主要的函數,當測試用例執行失敗時,調用該接口將結果保持到觀察者實例中
};
//TestSuccessListener.h
class CPPUNIT_API TestSuccessListener : public TestListener,
                                        public SynchronizedObject
{
public:
  TestSuccessListener( SynchronizationObject *syncObject = 0 );
  virtual ~TestSuccessListener();
  virtual void reset();
  void addFailure( const TestFailure &failure ); //添加失敗信息
  virtual bool wasSuccessful() const; //判斷執行結果

private:
  bool m_success;
};

//TestSuccessListener.cpp
void TestSuccessListener::addFailure( const TestFailure &failure )
{
  ExclusiveZone zone( m_syncObject ); //多線程時的鎖
  m_success = false;
}

bool TestSuccessListener::wasSuccessful() const
{
  ExclusiveZone zone( m_syncObject );
  return m_success;
}

void TestSuccessListener::reset()
{
  ExclusiveZone zone( m_syncObject );
  m_success = true;
}
//TestResultCollector.h
class CPPUNIT_API TestResultCollector : public TestSuccessListener
{
public:
  TestResultCollector( SynchronizationObject *syncObject = 0 );
  virtual ~TestResultCollector();

  void addFailure( const TestFailure &failure );

  virtual void reset();
  
  virtual int testErrors() const;
  virtual int testFailures() const;
  virtual int testFailuresTotal() const;

  virtual const TestFailures& failures() const;

protected:
  void freeFailures();
  
  typedef CppUnitDeque<Test *> Tests;
  Tests m_tests;
  
  typedef CppUnitDeque<TestFailure *> TestFailures;
  TestFailures m_failures;
  
  int m_testErrors;
};

//TestResultCollector.cpp
void TestResultCollector::freeFailures() //釋放所有錯誤信息
{
  TestFailures::iterator itFailure = m_failures.begin();
  while ( itFailure != m_failures.end() )
    delete *itFailure++;
  m_failures.clear();
}

void TestResultCollector::reset() //將Listener的狀態變成初始狀態
{
  TestSuccessListener::reset();

  ExclusiveZone zone( m_syncObject ); 
  freeFailures();
  m_testErrors = 0;
  m_tests.clear();
}

void TestResultCollector::addFailure( const TestFailure &failure )//添加錯誤信息
{
  TestSuccessListener::addFailure( failure );

  ExclusiveZone zone( m_syncObject ); 
  if ( failure.isError() )
    ++m_testErrors;
  m_failures.push_back( failure.clone() );
}

int TestResultCollector::testFailuresTotal() const //返回錯誤信息的個數(包括error)
{
  ExclusiveZone zone( m_syncObject ); 
  return m_failures.size();
}

int TestResultCollector::testFailures() const //返回失敗用例的個數(不包括error)
{ 
  ExclusiveZone zone( m_syncObject ); 
  return m_failures.size() - m_testErrors;
}

//返回錯誤信息
const TestResultCollector::TestFailures & TestResultCollector::failures() const
{ 
  ExclusiveZone zone( m_syncObject );
  return m_failures; 
}

//返回error的個數
int TestResultCollector::testErrors() const
{ 
  ExclusiveZone zone( m_syncObject );
  return m_testErrors;
}
    • TestFailure類:用於表示測試用例的執行結果,一個測試用例執行失敗就會生成一個TestFailure類的實例
    • TestFailure可以表示用例執行失敗,也可以表示error,二者的區別是:測試用例執行失敗時拋出的異常是已知的,如果執行用例時拋出未知異常,就是error
//TestFailure.cpp.h
class CPPUNIT_API TestFailure 
{
public:
  TestFailure( Test *failedTest, Exception *thrownException, bool isError );
  virtual ~TestFailure ();
  virtual Test *failedTest() const;   //返回失敗用例對象
  virtual Exception *thrownException() const; //返回拋出的對象
  virtual SourceLine sourceLine() const; //獲取拋出異常的代碼行號
  virtual bool isError() const; //判斷是用例失敗還是error
  virtual std::string failedTestName() const;//獲取失敗測試用例的名稱
  virtual TestFailure *clone() const;//克隆

protected:
  Test *m_failedTest;
  Exception *m_thrownException;
  bool m_isError;

private: 
  TestFailure( const TestFailure &other ); 
  TestFailure &operator =( const TestFailure& other ); 
};

//TestFailure.cpp
TestFailure::TestFailure( Test *failedTest, 
                          Exception *thrownException,
                          bool isError ) :
    m_failedTest( failedTest ), //失敗的用例
    m_thrownException( thrownException ), //拋出的異常
    m_isError( isError )//是用例失敗還是未知異常
{
}
  • 多線程安全同步機制
    • SynchronizedObject類起到一個域名的包裝作用,防止名稱空間被污染

    • SynchronizationObject類似一個基類,提供lock和unlock的接口,可以依據不同的平台進行繼承實現互斥鎖

    • ExclusiveZone類的作用是封裝SynchronizationObject類,方便使用互斥鎖,關鍵就是在構造函數中調用lock函數,析構函數中調用unlock函數,無需手動調用lock和unlock函數

class CPPUNIT_API SynchronizedObject
{
public:

  class SynchronizationObject //實現互斥鎖的基類
  {
    public:
      SynchronizationObject() {}
      virtual ~SynchronizationObject() {}

      virtual void lock() {}
      virtual void unlock() {}
  };


  SynchronizedObject( SynchronizationObject *syncObject =0 );
  virtual ~SynchronizedObject();

protected:
    
  class ExclusiveZone //封裝SynchronizationObject類的使用方式
  {
    SynchronizationObject *m_syncObject; 

  public:
    ExclusiveZone( SynchronizationObject *syncObject ) 
        : m_syncObject( syncObject ) 
    { 
      m_syncObject->lock(); //構造函數中調用lock函數
    }

    ~ExclusiveZone() 
    { 
      m_syncObject->unlock();//析構函數中調用unlock函數 
    }
  };

  virtual void setSynchronizationObject( SynchronizationObject *syncObject );

protected:
  SynchronizationObject *m_syncObject;

private:
  SynchronizedObject( const SynchronizedObject &copy );
  void operator =( const SynchronizedObject &copy );
};
  • TestResult類,與TestListener類組成觀察者模式,其中TestResult類是被觀察者,TestListener類是觀察者 
    • TestResult類的runTest方法是運行測試用例的源頭,里面會執行測試用例,並將測試用例的執行結果通知給所有的觀察者

    • TestResult類的runTest方法會調用每一個測試用例的run方法

    • TestResult類的關鍵代碼如下:

//TestResult.h
class CPPUNIT_API TestResult : protected SynchronizedObject
{
public:

  TestResult( SynchronizationObject *syncObject = 0 );
  virtual ~TestResult();

  virtual void addListener( TestListener *listener );//添加測試用例
  virtual void removeListener( TestListener *listener );//移除測試用例
  
  virtual void addFailure( Test *test, Exception *e );//添加失敗信息

  virtual void runTest( Test *test );//入口方法

protected:
  void addFailure( const TestFailure &failure ); //將失敗的消息通知給所有的觀察者
  
protected:
  typedef CppUnitDeque<TestListener *> TestListeners;
  TestListeners m_listeners;//保存所有的監聽者
};

//TestResult.cpp
void TestResult::addListener( TestListener *listener )//添加測試用例
{
  ExclusiveZone zone( m_syncObject ); 
  m_listeners.push_back( listener );
}

void TestResult::removeListener ( TestListener *listener )//移除測試用例
{
  ExclusiveZone zone( m_syncObject ); 
  removeFromSequence( m_listeners, listener );
}

void TestResult::runTest( Test *test )//入口方法
{
  startTestRun( test );
  test->run( this ); 
  endTestRun( test );
}

void TestResult::addFailure( Test *test, Exception *e )//用例失敗時被調用
{ 
  TestFailure failure( test, e, false );
  addFailure( failure );
}

void TestResult::addFailure( const TestFailure &failure )//將失敗的消息通知給所有的觀察者
{
  ExclusiveZone zone( m_syncObject ); 
  for ( TestListeners::iterator it = m_listeners.begin();
        it != m_listeners.end(); 
        ++it )
    (*it)->addFailure( failure );
}
  • OutPutter相關類

 

    • OutPutter是公共的基類,提供統一的接口
class CPPUNIT_API Outputter
{
public:
  virtual ~Outputter() {}

  virtual void write() =0; //關鍵方法
};
    • TextOutputter類:將執行結果按照文本模式打印出來,一般是輸出到屏幕(一般在調試中使用)

    • XmlOutPutter類:將執行結果按照xml模式打印出來,一般是保存到xml文件中(一般在自動化中使用)

    • CompilerOutPutter類:將執行的結果以編譯器兼容的模式打印出來,便於調試,一般不怎么使用

    • 總結:就是將TestResult類中的Failure信息以不同的格式輸出

 

2. 創建測試用例的相關類

  • 創建測試用例的相關類主要使用了工廠模式
  • 創建的具體過程使用了宏進行簡化
  • 相關類如下
    • ConcretTestFixtureFactory類:用於創建測試用例對象
class TestFixtureFactory
{
public:
  virtual TestFixture *makeFixture() =0; //用於創建具體測試用例的公共方法

  virtual ~TestFixtureFactory() {}
};

//使用工廠方法模式
template<class TestFixtureType>
class ConcretTestFixtureFactory : public CPPUNIT_NS::TestFixtureFactory
{
  TestFixture *makeFixture()
  {
    return new TestFixtureType(); //根據具象的類型創建實例
  }
};
    • TestSuiteBuilderContextBase類:用於將測試用例對象添加到suite中

 

//TestSuiteBuilderContextBase.h
class CPPUNIT_API TestSuiteBuilderContextBase
{
public:
  TestSuiteBuilderContextBase( TestSuite &suite,
                               const TestNamer &namer,
                               TestFixtureFactory &factory );

  virtual ~TestSuiteBuilderContextBase();

  void addTest( Test *test );

protected:
  TestFixture *makeTestFixture() const; //創建測試用例

  TestSuite &m_suite; //用於保存測試用例的suite
  const TestNamer &m_namer; //保存suite的名稱
  TestFixtureFactory &m_factory; //創建測試用例的工廠
};

//TestSuiteBuilderContextBase.cpp
TestSuiteBuilderContextBase::TestSuiteBuilderContextBase( 
                                 TestSuite &suite,
                                 const TestNamer &namer,
                                 TestFixtureFactory &factory )
  : m_suite( suite )
  , m_namer( namer )
  , m_factory( factory )
{//構造函數
}

TestFixture *TestSuiteBuilderContextBase::makeTestFixture() const 
{
  return m_factory.makeFixture();
}

void TestSuiteBuilderContextBase::addTest( Test *test ) //添加用例到suite
{
  m_suite.addTest( test );
}
  • TestFactory類
class CPPUNIT_API TestFactory 
{
public:
  virtual ~TestFactory() {}
  virtual Test* makeTest() = 0;
};
  • TestSuiteFactory類:此處調用的TestCaseType::suite()返回的suite就是包含測試用例的suite
template<class TestCaseType> 
  class TestSuiteFactory : public TestFactory
  {
  public:
    virtual Test *makeTest()
    {
      return TestCaseType::suite(); //關鍵方法,該方法的實現是宏定義
    }
  };
    • TestFactoryRegistry類:用於從TestFactoryRegistryList類中獲取指定名稱的TestFactoryRegistry實例
    • TestFactoryRegistryList類:單例類,根據名稱保存所有的TestFactoryRegistry實例
    • AutoRegisterSuite類:封裝TestSuiteFactory的注冊方式

 

3.框架入口類

  • TestRunner類是整個CppUnit的入口類,將TestSuite類、TestResult類以及TestListener類聯合在一起,然后提供統一的入口方法,便於使用
  • TestListener實例包含在TestResult實例里面
  • 部分代碼如下:

 

//TestRunner.h
class CPPUNIT_API TestRunner
{
public:
  TestRunner(  );
  virtual ~TestRunner();
  //將需要運行的測試用例添加進來
  virtual void addTest( Test *test ); 
  //運行指定的測試用例
  virtual void run( TestResult &controller, const std::string &testPath = "" );

protected:
  //內部類,對suite進行了包裝
  class CPPUNIT_API WrappingSuite : public TestSuite
  {
  public:
    WrappingSuite( const std::string &name = "All Tests" );

    int getChildTestCount() const;

    std::string getName() const;

    void run( TestResult *result );

  protected:
    Test *doGetChildTestAt( int index ) const;

    bool hasOnlyOneTest() const;

    Test *getUniqueChildTest() const;
  };

protected:
  WrappingSuite *m_suite;

private:
  TestRunner( const TestRunner &copy );
  void operator =( const TestRunner &copy );
private:
};

//TestRunner.cpp
void TestRunner::addTest( Test *test )
{
  m_suite->addTest( test ); 
}

void TestRunner::run( TestResult &controller,
                 const std::string &testPath )
{
  TestPath path = m_suite->resolveTestPath( testPath );
  Test *testToRun = path.getChildTest();

  controller.runTest( testToRun );
}

 

 4.重要宏的解析

  • CPPUNIT_TEST_SUITE_NAMED_REGISTRATION
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(SimpleTest, "alltest");
//展開后如下
static CPPUNIT_NS::AutoRegisterSuite<SimpleTest> autoRegisterRegistry__12("alltest");
  • CPPUNIT_TEST_SUITE、CPPUNIT_TEST以及CPPUNIT_TEST_SUITE_END宏,這三個紅必須配合使用,不能單獨使用,用於聲明需要運行的測試用例
private:
	//根據typeid(SimpleTest)為名稱生成TestNamer類的實例,就是對名稱的封裝
	static const CPPUNIT_NS::TestNamer &getTestNamer__()                    
	{                                                                       
		static CPPUNIT_NS::TestNamer testNamer(typeid(SimpleTest));         
		return testNamer;                                                     
	}          
													
public:                                                                   

	//將測試用例添加到suite中
	static void addTestsToSuite( CPPUNIT_NS::TestSuiteBuilderContextBase &baseContext ) 
	{                                                                       
		CPPUNIT_NS::TestSuiteBuilderContext<SimpleTest> context(baseContext)
		context.addTest(( new CPPUNIT_NS::TestCaller<SimpleTest>(context.getTestNameFor( #testMethod), &SimpleTest::testMethod, context.makeFixture())))
	}        
    
	//對外接口,被TestSuiteFactory中的makeTest方法調用,返回一個完整的suite,等待被運行
	static CPPUNIT_NS::TestSuite *suite()                                      
	{                                                                          
		const CPPUNIT_NS::TestNamer &namer = getTestNamer__();                   
		std::auto_ptr<CPPUNIT_NS::TestSuite> suite(new CPPUNIT_NS::TestSuite(namer.getFixtureName()));             
		CPPUNIT_NS::ConcretTestFixtureFactory<SimpleTest> factory;          
		CPPUNIT_NS::TestSuiteBuilderContextBase context(*suite.get(), namer, factory );              
		SimpleTest::addTestsToSuite( context );                             
		return suite.release();                                                  
	} 

 

 

 


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