Knowledge Base Nr: 00327 teststubb.cpp - http://www.swe-kaiser.de

c/cpp: Stubben für Modultest
verschiedene möglichkeiten sourcecode zu testzwecken zu stubben

  

################# while-schleifen testen

//////////////// code.cpp:
void func1()
{
    while(1)   //endlosschleife
    {
     	...
    }
}

void func2()
{
 	int i=0;
    while (i < 5)	//wird 5 mal durchlaufen
    {
  		...
  		i++;
 	}
}

//////////////// stub.h:
#define while(v) while(TC_CompWhile(v))

extern bool TC_CompWhile(bool condition);

//////////////// test.cpp:
int tc_CompWhile_break;

bool TC_CompWhile(bool condition)
{
    if (0 == tc_CompWhile_break)  //timeout
        return false;

    tc_CompWhile_break--;

    return condition;  //originalbedingung
}

bool testfunc()
{
  //endlsschleife testen
	tc_CompWhile_break = 100;
	func1();
    if (tc_CompWhile_break != 0)
	    return false;

  //wileschleife bedingung testen
	tc_CompWhile_break = 100;
	func2();
    if (tc_CompWhile_break != 100-5)
	    return false;

	retutn true;
}


################# lokale funktionen stubben

//////////////// code.cpp:
#ifdef XTEST_MODUL
    #include "stub.h"
#endif

int globvar = 33;

#if defined(XTEST_MODUL) && defined(func2)
void Tc_func2(int p1, int p2)
#else
void func2(int p1, int p2)
#endif
{
	...
	globvar = 77;
}

void func1()
{
	func2(11, 33);
}

//////////////// stub.h:
#define func2 func2


//////////////// test.cpp:

extern int globvar;

bool func2_called;
int func2_p1;
int func2_p2;

void func2(int p1, int p2)
{
    func2_called = true;
	func2_p1 = p1;
	func2_p2 = p2;
}

bool testfunc()
{
    tc_Glob_LockSharedResource_b = FALSE;

  //variable testen
    if (globvar != 33)
	    return false;

  //testen ob func1 func2 mit den richtigen parametern aufruft
	func2_called = false;
    func1();
    if (func2_called != true)
	    return false;
    if (func2_p1 != 11)
	    return false;
    if (func2_p2 != 33)
	    return false;

  //originalfunktion testen
	Tc_func2();
    if (globvar != 77)
	    return false;

    return true;
}