Re: CVS commit: src/sbin/ifconfig

[Jukka Ruohonen <jruohonen%iki.fi@localhost>]

On Sun, Mar 18, 2012 at 11:57:08PM +0900, Julio Merino wrote:
> >But why is stderr being involved?
> 
> If you really want to ignore stderr in the test, pass "-e ignore" to 
> atf_check.  The default is "-o empty -e empty".
> 
> Now, the question is: do you really want to ignore the message, or do 
> you want to validate that the appropriate error message is printed?  If 
> the later (which should be the preferred way), "-e inline:'foo bar\n'" 
> or "-e match:'foo bar'" or "-e file:experr" (with experr being 
> pre-populated with the expected message) will do the job.

Thanks; this was pointed out already.

But I have a related question. Supposedly ATF uses something like freopen(3)
to capture the output in the standard streams. Now consider this from one
test I just added:

        $ find /etc -type f -exit
        $ echo $?
        0

All good; exited without nothing printed to stderr and the status is zero.
But this:

        atf_check -o ignore \
                -s exit:0 -x "find /etc -type f -exit"

yields

        tc-so:Executing command [ /bin/sh -c find /etc -type f -exit ]
        tc-se:Fail: incorrect exit status: 1, expected: 0
        tc-se:stdout:
        tc-se:
        tc-se:stderr:
        tc-se:find: fts_read: Inappropriate ioctl for device
        tc-se:
        tc-end: 1332083101.965143, exit, failed, atf-check failed;
        see the output of the test for details

So what is going on here? Likewise

        $ find / -exit 99
        $ echo $?
        99

contra

        atf_check -o ignore -e ignore -s exit:99 -x "find / -exit 99"

and

        tc-so:Executing command [ /bin/sh -c find / -exit 99 ]
        tc-se:Fail: incorrect exit status: 1, expected: 99
        tc-se:stdout:
        tc-se:
        tc-se:stderr:
        tc-se:find: fts_read: Inappropriate ioctl for device
        tc-se:
        tc-end: 1332083172.374247, exit_status, failed, atf-check failed;
        see the output of the test for details

- Jukka.