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Date:   Thu, 11 Aug 2022 09:41:03 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     Siddh Raman Pant <code@...dh.me>
Cc:     Piyush Thange <pthange19@...il.com>, davem <davem@...emloft.net>,
        edumazet <edumazet@...gle.com>, kuba <kuba@...nel.org>,
        pabeni <pabeni@...hat.com>, shuah <shuah@...nel.org>,
        "vladimir.oltean" <vladimir.oltean@....com>,
        idosch <idosch@...dia.com>, petrm <petrm@...dia.com>,
        troglobit <troglobit@...il.com>, amcohen <amcohen@...dia.com>,
        tobias <tobias@...dekranz.com>,
        "po-hsu.lin" <po-hsu.lin@...onical.com>,
        netdev <netdev@...r.kernel.org>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-kernel-mentees 
        <linux-kernel-mentees@...ts.linuxfoundation.org>
Subject: Re: [PATCH] selftests:net:forwarding: Included install command

On Wed, Aug 10, 2022 at 03:23:15PM +0530, Siddh Raman Pant wrote:
> On Wed, 10 Aug 2022 15:05:08 +0530  Piyush Thange <pthange19@...il.com>  wrote:
> > If the execution is skipped due to "jq not installed" message then
> > the installation methods on different OS's have been provided with
> > this message.
> > 
> > Signed-off-by: Piyush Thange <pthange19@...il.com>
> > ---
> >  tools/testing/selftests/net/forwarding/lib.sh | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> > 
> > diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
> > index 37ae49d47853..c4121856fe06 100755
> > --- a/tools/testing/selftests/net/forwarding/lib.sh
> > +++ b/tools/testing/selftests/net/forwarding/lib.sh
> > @@ -152,6 +152,14 @@ require_command()
> > 
> >  	if [[ ! -x "$(command -v "$cmd")" ]]; then
> >  		echo "SKIP: $cmd not installed"
> > +		if [[ $cmd == "jq" ]]; then
> > +			echo " Install on Debian based systems"
> > +			echo "	sudo apt -y install jq"
> > +			echo " Install on RHEL based systems"
> > +			echo "	sudo yum -y install jq"
> > +			echo " Install on Fedora based systems"
> > +			echo "	sudo dnf -y install jq"
> > +		fi
> >  		exit $ksft_skip
> >  	fi
> >  }
> > --
> > 2.37.1
> 
> This is very specific to `jq` command. What's special with `jq` and not
> others? If methods have to be shown, they should be shown for all the
> programs which are not installed.

Agree. The user could decide if jq should be install via REQUIRE_JQ. There are
also other cmds that vendor may not build by default. I didn't see any
selftests need to handle the installation. The users should takes care of it.

require_command() has takes care most of the needed cmds. If we want to
improve the user's experience for the needed cmds. I think add the needed cmds
to README file is better.

Thanks
Hangbin

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