[LTP] [PATCH v2 1/1] tst_test.sh: Add test cmd helper tst_test_cmds()

[Petr Vorel]

Hi,

ping, please.


Kind regards,
Petr

> + tst_cmd_available()

> tst_test_cmds() is meant to be a check just for a particular test.
> Works like tst_check_cmds(), but instead of tst_brk() calls tst_res().

> tst_cmd_available() helper can handle cases when command shell builtin
> is not available (e.g. Busybox).

> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> Hi,

> if you don't like using which or testing with 127 exit code in
> tst_cmd_available() (or if you don't like tst_cmd_available()), I
> can remove it.


> Kind regards,
> Petr
> ---
>  doc/test-writing-guidelines.txt | 17 +++++++++++++++++
>  testcases/lib/tst_test.sh       | 29 +++++++++++++++++++++++++++--
>  2 files changed, 44 insertions(+), 2 deletions(-)

> diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt
> index cbbfe6c0f..320b42bf8 100644
> --- a/doc/test-writing-guidelines.txt
> +++ b/doc/test-writing-guidelines.txt
> @@ -1519,6 +1519,23 @@ existence each of them and exits the test with 'TCONF' on first misssing.
>  Alternatively the 'tst_check_cmds()' function can be used to do the same on
>  runtime, since sometimes we need to the check at runtime too.

> +'tst_test_cmds()' can be used for requirements just for a particular test
> +as it doesn't exit (it issues 'tst_res TCONF'). Expected usage is:
> +...
> +
> +TST_TESTFUNC=do_test
> +. tst_test.sh
> +
> +do_test()
> +{
> +	tst_test_cmds cmd || return
> +	cmd --foo
> +	...
> +}
> +
> +tst_run
> +...
> +
>  Locating kernel modules
>  +++++++++++++++++++++++

> diff --git a/testcases/lib/tst_test.sh b/testcases/lib/tst_test.sh
> index 8d49d34b6..b3e803e05 100644
> --- a/testcases/lib/tst_test.sh
> +++ b/testcases/lib/tst_test.sh
> @@ -201,12 +201,37 @@ tst_mkfs()
>  	ROD_SILENT mkfs.$fs_type $fs_opts $device
>  }

> +tst_cmd_available()
> +{
> +	if type command > /dev/null 2>&1; then
> +		command -v $1 > /dev/null 2>&1 || return 1
> +	else
> +		which $1 > /dev/null 2>&1
> +		if [ $? -eq 0 ]; then
> +			return 0
> +		elif [ $? -eq 127 ]; then
> +			tst_brk TCONF "missing which command"
> +		else
> +			return 1
> +		fi
> +	fi
> +}
> +
>  tst_check_cmds()
>  {
>  	local cmd
>  	for cmd in $*; do
> -		if ! command -v $cmd > /dev/null 2>&1; then
> -			tst_brk TCONF "'$cmd' not found"
> +		tst_cmd_available $cmd || tst_brk TCONF "'$cmd' not found"
> +	done
> +}
> +
> +tst_test_cmds()
> +{
> +	local cmd
> +	for cmd in $*; do
> +		if ! tst_cmd_available $cmd; then
> +			tst_res TCONF "'$cmd' not found"
> +			return 1
>  		fi
>  	done
>  }