cppunit-devel

[Cppunit-devel] How to Test a Module that is dependent on other module?

[CppUnit d. m. l. <cpp...@li...>]

Hi All.
Can Any body tell me how to test any module that is itself dependent on
other modules.
For example.
i have class A having module named aProc().
And suppose aProc() makes a call to any module declared in other class, lets
say B.
as
class A
{
//...
bool aProc()
{
B b;
if ( b.bProc()) // Call to B class' function
{
// DO SOMETHING
}
else
{
//DO SOMETHING
}

}

So here in Class A aProc() is dependent on b.bProc()'s output.
So my question is that do i need to make a TestSuits for class B also along
with class A.
Remember i want to unit test only Class A and not B.

Regards,
Sandeep.

Re: [Cppunit-devel] How to Test a Module that is dependent on other module?

[CppUnit d. m. l. <cpp...@li...>]

Hello Sandeep,

Am Montag, 4. Juni 2007 schrieb CppUnit development mailing list:
> Can Any body tell me how to test any module that is itself dependent on
> other modules.
> For example.
> i have class A having module named aProc().
> And suppose aProc() makes a call to any module declared in other class,
> lets say B.
[...]
> So here in Class A aProc() is dependent on b.bProc()'s output.
> So my question is that do i need to make a TestSuits for class B also alo=
ng
> with class A.
> Remember i want to unit test only Class A and not B.

What is the reason that you do not want to test class B in your scenario?=20
Usually, you should do so also.

But I assume that you are not able to test B for some reason (e.g. due to=20
remote implementation or something else). In this case it is common sense t=
o=20
use a stub or a mock object of class B.

In C++ you can simply exchange the B.cpp implementation file, for example, =
and=20
provide your own implementation. This could be rather empty and just enough=
=20
code that A is working (stub), or it could contain additional test code tha=
t=20
tests for, e.g., known input/output values or a counter of the amount of=20
calls to B::bProc(). The latter would be a mock object.

I hope I got the point and this was help for you. :-)

Kind regards,
 Marcel


=2D-=20
Marcel Winandy
http://www.prosec.rub.de/staff/winandy.html
Horst G=F6rtz Institute for IT Security, Ruhr-University Bochum

Re: [Cppunit-devel] How to Test a Module that is dependent on other module?

[CppUnit d. m. l. <cpp...@li...>]

Hello
Ya i got what you wanna say.
But i have another problem....
Suppose i want to create test cases for system calls. for e.g. a call to
createthread()
or to createevent. how to provide test cases for those calls
Suppose i replace those system calls with dummy functions. that's fine but =
i
think it will clash with system dlls. then how do i tackle this problem.

Thanks.




On 6/4/07, CppUnit development mailing list <
cpp...@li...> wrote:
>
> Hello Sandeep,
>
> Am Montag, 4. Juni 2007 schrieb CppUnit development mailing list:
> > Can Any body tell me how to test any module that is itself dependent on
> > other modules.
> > For example.
> > i have class A having module named aProc().
> > And suppose aProc() makes a call to any module declared in other class,
> > lets say B.
> [...]
> > So here in Class A aProc() is dependent on b.bProc()'s output.
> > So my question is that do i need to make a TestSuits for class B also
> along
> > with class A.
> > Remember i want to unit test only Class A and not B.
>
> What is the reason that you do not want to test class B in your scenario?
> Usually, you should do so also.
>
> But I assume that you are not able to test B for some reason (e.g. due to
> remote implementation or something else). In this case it is common sense
> to
> use a stub or a mock object of class B.
>
> In C++ you can simply exchange the B.cpp implementation file, for example=
,
> and
> provide your own implementation. This could be rather empty and just
> enough
> code that A is working (stub), or it could contain additional test code
> that
> tests for, e.g., known input/output values or a counter of the amount of
> calls to B::bProc(). The latter would be a mock object.
>
> I hope I got the point and this was help for you. :-)
>
> Kind regards,
> Marcel
>
>
> --
> Marcel Winandy
> http://www.prosec.rub.de/staff/winandy.html
> Horst G=F6rtz Institute for IT Security, Ruhr-University Bochum
>
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