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Listing 2: Implementation of Counter class

#include "Counter.h"
#include <new>
#include <cstdlib>
#include <cassert>

using namespace std;

int Counter::sExceptionPointCount = 0;
int Counter::sThrowCount = -1;
bool Counter::sDontThrow = false;
int Counter::sNewCount = 0;
int Counter::sPassCount = 0;
int Counter::sFailCount = 0;
ostream* Counter::mOs = &cout;

void Counter::CouldThrow() throw ( TestException )
{
    if( !sDontThrow &&
        ++sExceptionPointCount == sThrowCount ) 
    {
        throw TestException();
    }
}

void Counter::SetThrowCount( int inCount ) throw()
{
    sExceptionPointCount = 0;
    sThrowCount = inCount;
    sDontThrow = false;
}

void Counter::DontThrow() throw()
{
    sDontThrow = false;
}

bool Counter::HasThrown() throw()
{
    return sExceptionPointCount >= sThrowCount;
}

int Counter::GetAllocationCount() throw()
{
    return sNewCount;
}

void Counter::Pass( const char* testName ) throw()
{
    ++sPassCount;
    //(*mOs) << "        Passed test " << testName << endl;
}

void Counter::Fail( const char* testName ) throw()
{
    ++sFailCount;
    (*mOs) << "****    Failed test " << testName 
        << " at exception count " << sThrowCount
        << "." << endl;
}

void Counter::Test( bool result, const char* testName ) throw()
{
    if( result ) {
        Pass( testName );
    } else {
        Fail( testName );
    }
}

void Counter::PrintTestSummary()
{
    (*mOs) << "Test Results:" << std::endl;
    (*mOs) << "Total Tests: " << sPassCount + sFailCount 
           << std::endl;
    (*mOs) << "Passed     : " << sPassCount << std::endl;
    (*mOs) << "Failed     : " << sFailCount << std::endl;
}

// not shown: debugging
// memory manager -- available in
// online version of this listing
// ...
— End of Listing —

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