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Re: [pdf-devel] time module unit test cases
From: |
gerel |
Subject: |
Re: [pdf-devel] time module unit test cases |
Date: |
Thu, 17 Apr 2008 23:04:49 -0300 |
> Date: Thu, 17 Apr 2008 20:52:32 +0200
> From: address@hidden
>
>
> I wanted to confirm one more thing, suppose i have created one object
> using
> *pdf_time_dup**.
>
> *So the contains of new object is similar to previous object. This test
> case
> is not unit test case right as this is functional test case.
>
> Say passing invalid object and see what is the behavior this can be unit
> test case right?*
> *
>
> I dont fully understand you. In order to define unit test cases for
> the `pdf_time_dup' function you should indeed use it. The fact that it
> creates a new variable containing the same values as the parameters
> do not invalidate it as a unit test case.
Anish I think we're not doing any specific type of tests, if that's your
doubt. BUT, you at least need to do "black-box" testing. If you want to do
"white-box" testing it's much better (I guess that's what you meant with
"functional test" since functional tests involves all the modules of
the library not only one).
>
> Passing an invalid object to the function (an invalid pointer) will
> surely cause the application to crash. It is generally not possible in
> C to determine if a pointer is a "valid" one (if it points to
> appropiately allocated _and_ appropriately initialized memory). Even
> if you expect a crash (and test for the presence of a crash in the
> process) you may be dissapointed: the application may survive if the
> garbage contained in the pointer points to a valid memory
> address. So it is not useful to define negative unit tests with
> invalid pointers.
>
> I hope that helps.
>
NULL pointers indeed are invalid and should always be checked on. I don't know
if that's a "negative unit test" but they're useful if we want rock-solid
software.
Just my 2 cents.
-gerel
- [pdf-devel] time module unit test cases, anish patil, 2008/04/07
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/07
- Re: [pdf-devel] time module unit test cases, anish patil, 2008/04/10
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/10
- Re: [pdf-devel] time module unit test cases, anish patil, 2008/04/17
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/17
- Re: [pdf-devel] time module unit test cases,
gerel <=
- Re: [pdf-devel] time module unit test cases, gerel, 2008/04/17
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/18
- Re: [pdf-devel] time module unit test cases, gerel, 2008/04/18
- Re: [pdf-devel] time module unit test cases, gerel, 2008/04/18
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/19
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/19
- Re: [pdf-devel] time module unit test cases, gerel, 2008/04/19
- Re: [pdf-devel] time module unit test cases, jemarch, 2008/04/20
- Re: [pdf-devel] time module unit test cases, Eder, 2008/04/20
- Re: [pdf-devel] time module unit test cases, Eder, 2008/04/20