netdev - Re: [PATCH] selftests: Use kselftest skip code for skipped tests

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Date:   Tue, 25 May 2021 09:56:12 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Po-Hsu Lin <po-hsu.lin@...onical.com>
Cc:     "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>, skhan@...uxfoundation.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>, Martin Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>, nikolay@...dia.com,
        Guillaume Nault <gnault@...hat.com>,
        Vladimir Oltean <vladimir.oltean@....com>, idosch@...dia.com,
        baowen.zheng@...igine.com, danieller@...dia.com, petrm@...dia.com
Subject: Re: [PATCH] selftests: Use kselftest skip code for skipped tests

On Tue, May 25, 2021 at 2:17 AM Po-Hsu Lin <po-hsu.lin@...onical.com> wrote:
>
> There are several test cases still using exit 0 when they need to be
> skipped. Use kselftest framework skip code instead so it can help us
> to distinguish the proper return status.
>
> Criterion to filter out what should be fixed in selftests directory:
>   grep -r "exit 0" -B1 | grep -i skip
>
> This change might cause some false-positives if people are running
> these test scripts directly and only checking their return codes,
> which will change from 0 to 4. However I think the impact should be
> small as most of our scripts here are already using this skip code.
> And there will be no such issue if running them with the kselftest
> framework.
>
> Signed-off-by: Po-Hsu Lin <po-hsu.lin@...onical.com>

Perhaps it's a good time to mention this patch to add a kselftest
helper library for shell tests again:

[PATCH] tools/testing: add kselftest shell helper library
https://lore.kernel.org/linux-kselftest/20201123162508.585279-1-willemdebruijn.kernel@gmail.com/

That can avoid redefining this constant in every file.