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Re: meaning autotest exit code 13

From: Eric Blake
Subject: Re: meaning autotest exit code 13
Date: Wed, 06 Mar 2013 15:47:28 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3

On 03/06/2013 02:29 AM, djien wrote:
> I generate to a testsuite script using autom4te (v.2.68) and execute
> this test. It fails with a return code 13.
> Please inform me whether there is a list of return-codes which explains this
> error code.
> Test is simple: it compares output Hello, world
> Thank you for your effort
> m4_define([AT_PACKAGE_STRING],    [hello])
> m4_define([AT_PACKAGE_BUGREPORT], address@hidden)
> AT_INIT([hello])
> AT_SETUP([hello])
> AT_TESTED(hello)
> AT_CHECK([hello],['Hello, world'])

This is a usage error.  This line says to execute 'hello', and expect $?
(which will always be numeric) to contain the string 'Hello, world'.
Perhaps we can enhance the AT_CHECK macro to sanity check the second
argument (omitted, literal 'ignore', a numeric value, or a shell
substitution); but remember that it is impossible to sanity check that
all shell substitutions would eventually resolve into a numeric value.

> @@ -0,0 +1 @@
> +Hello, world
> / exit code was 13, expected Hello, world
> 1. 1. hello ( FAILED (

Meanwhile, this says that when the testsuite executed 'hello', the exit
status was 13.  But autotest did not write the 'hello' program, so
that's something your package presumably provided.  The testsuite itself
exited with status 1 (a test failed), not status 13.  I have no idea
what hello's status 13 means.

I suspect you meant to test that 'hello' prints 'Hello, world\n' to
stdout, and exits with status 0; if so, write:

AT_CHECK([hello], [], [[Hello, world

Or, if it is normal for 'hello' to have non-zero status, change the
second argument to [13] to match an exact status, or to [ignore] to pass
the test in spite of the exit status.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library

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