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Date: Tue, 23 Sep 2014 00:47:32 +0900
From: Namhyung Kim <namhyung@...il.com>
To: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Shuah Khan <shuah.kh@...sung.com>,
Tom Zanussi <tom.zanussi@...ux.intel.com>,
Oleg Nesterov <oleg@...hat.com>,
Steven Rostedt <rostedt@...dmis.org>,
Fengguang Wu <fengguang.wu@...el.com>,
Ingo Molnar <mingo@...nel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/4] ftracetest: Add POSIX.3 standard and XFAIL
result codes
Hi Masami,
2014-09-18 (목), 12:05 +0000, Masami Hiramatsu:
> Add XFAIL and POSIX 1003.3 standard codes (UNRESOLVED/
> UNTESTED/UNSUPPORTED) as result codes. These are used for the
> results that test case is expected to fail or unsupported
> feature (by config).
>
> To return these result code, this introduces exit_unresolved,
> exit_untested, exit_unsupported and exit_xfail functions,
> which use real-time signals to notify the result code to
> ftracetest.
>
> This also set "errexit" option for the testcases, so that
> the tests don't need to exit explicitly.
Looks much better than before!
Thanks,
Namhyung
>
> Changes in v4:
> - Remove XPASS and short-names.
> - Use real-time signals for result code.
> - Simplify test cases by using errexit option.
> - Add sample scripts for result code.
>
> Changes in v3:
> - Add UNRESOLVED/UNTESTED codes.
> - Fix to handle undefined codes.
> - Add a document about return codes.
> - Fix to show failure logs.
> - Don't use -e option for echo since dash doesn't support it.
>
> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> ---
> tools/testing/selftests/ftrace/README | 38 ++++++
> tools/testing/selftests/ftrace/ftracetest | 122 ++++++++++++++++++--
> tools/testing/selftests/ftrace/samples/fail.tc | 4 +
> tools/testing/selftests/ftrace/samples/pass.tc | 3
> .../testing/selftests/ftrace/samples/unresolved.tc | 4 +
> .../selftests/ftrace/samples/unsupported.tc | 3
> tools/testing/selftests/ftrace/samples/untested.tc | 3
> tools/testing/selftests/ftrace/samples/xfail.tc | 3
> .../selftests/ftrace/test.d/00basic/basic2.tc | 3
> .../selftests/ftrace/test.d/00basic/basic3.tc | 6 -
> .../ftrace/test.d/kprobe/add_and_remove.tc | 12 +-
> .../selftests/ftrace/test.d/kprobe/busy_check.tc | 15 +-
> tools/testing/selftests/ftrace/test.d/template | 5 +
> 13 files changed, 187 insertions(+), 34 deletions(-)
> create mode 100644 tools/testing/selftests/ftrace/samples/fail.tc
> create mode 100644 tools/testing/selftests/ftrace/samples/pass.tc
> create mode 100644 tools/testing/selftests/ftrace/samples/unresolved.tc
> create mode 100644 tools/testing/selftests/ftrace/samples/unsupported.tc
> create mode 100644 tools/testing/selftests/ftrace/samples/untested.tc
> create mode 100644 tools/testing/selftests/ftrace/samples/xfail.tc
>
> diff --git a/tools/testing/selftests/ftrace/README b/tools/testing/selftests/ftrace/README
> index ee2cef7..182e76f 100644
> --- a/tools/testing/selftests/ftrace/README
> +++ b/tools/testing/selftests/ftrace/README
> @@ -38,9 +38,45 @@ extension) and rewrite the test description line.
> * The test cases should run on dash (busybox shell) for testing on
> minimal cross-build environments.
>
> + * Note that the tests are run with "set -e" (errexit) option. If any
> + command fails, the test will be terminated immediately.
> +
> + * The tests can return some result codes instead of pass or fail by
> + using exit_unresolved, exit_untested, exit_unsupported and exit_xfail.
> +
> +Result code
> +===========
> +
> +Ftracetest supports following result codes.
> +
> + * PASS: The test succeeded as expected. The test which exits with 0 is
> + counted as passed test.
> +
> + * FAIL: The test failed, but was expected to succeed. The test which exits
> + with !0 is counted as failed test.
> +
> + * UNRESOLVED: The test produced unclear or intermidiate results.
> + for example, the test was interrupted
> + or the test depends on a previous test, which failed.
> + or the test was set up incorrectly
> + The test which is in above situation, must call exit_unresolved.
> +
> + * UNTESTED: The test was not run, currently just a placeholder.
> + In this case, the test must call exit_untested.
> +
> + * UNSUPPORTED: The test failed because of lack of feature.
> + In this case, the test must call exit_unsupported.
> +
> + * XFAIL: The test failed, and was expected to fail.
> + To return XFAIL, call exit_xfail from the test.
> +
> +There are some sample test scripts for result code under samples/.
> +You can also run samples as below:
> +
> + # ./ftracetest samples/
> +
> TODO
> ====
>
> * Fancy colored output :)
>
> - * Integrate with selftest?
> diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
> index 02f4e7a..2f7f8da0 100755
> --- a/tools/testing/selftests/ftrace/ftracetest
> +++ b/tools/testing/selftests/ftrace/ftracetest
> @@ -112,22 +112,105 @@ catlog() { #file
> }
>
> # Testcase management
> +# Test result codes - Dejagnu extended code
> +PASS=0 # The test succeeded.
> +FAIL=1 # The test failed, but was expected to succeed.
> +UNRESOLVED=2 # The test produced indeterminate results. (e.g. interrupted)
> +UNTESTED=3 # The test was not run, currently just a placeholder.
> +UNSUPPORTED=4 # The test failed because of lack of feature.
> +XFAIL=5 # The test failed, and was expected to fail.
> +
> +# Accumulations
> PASSED_CASES=
> FAILED_CASES=
> +UNRESOLVED_CASES=
> +UNTESTED_CASES=
> +UNSUPPORTED_CASES=
> +XFAILED_CASES=
> +UNDEFINED_CASES=
> +
> CASENO=0
> testcase() { # testfile
> CASENO=$((CASENO+1))
> prlog -n "[$CASENO]"`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
> }
> -failed() {
> - prlog " [FAIL]"
> - FAILED_CASES="$FAILED_CASES $CASENO"
> +
> +eval_result() { # retval sigval
> + local retval=$2
> + if [ $2 -eq 0 ]; then
> + test $1 -ne 0 && retval=$FAIL
> + fi
> + case $retval in
> + $PASS)
> + prlog " [PASS]"
> + PASSED_CASES="$PASSED_CASES $CASENO"
> + return 0
> + ;;
> + $FAIL)
> + prlog " [FAIL]"
> + FAILED_CASES="$FAILED_CASES $CASENO"
> + return 1 # this is a bug.
> + ;;
> + $UNRESOLVED)
> + prlog " [UNRESOLVED]"
> + UNRESOLVED_CASES="$UNRESOLVED_CASES $CASENO"
> + return 1 # this is a kind of bug.. something happened.
> + ;;
> + $UNTESTED)
> + prlog " [UNTESTED]"
> + UNTESTED_CASES="$UNTESTED_CASES $CASENO"
> + return 0
> + ;;
> + $UNSUPPORTED)
> + prlog " [UNSUPPORTED]"
> + UNSUPPORTED_CASES="$UNSUPPORTED_CASES $CASENO"
> + return 0 # this is not a bug
> + ;;
> + $XFAIL)
> + prlog " [XFAIL]"
> + XFAILED_CASES="$XFAILED_CASES $CASENO"
> + return 0
> + ;;
> + *)
> + prlog " [UNDEFINED]"
> + UNDEFINED_CASES="$UNDEFINED_CASES $CASENO"
> + return 1 # this must be a test bug
> + ;;
> + esac
> +}
> +
> +# Signal handling for result codes
> +SIG_RESULT=
> +SIG_BASE=36 # Use realtime signals
> +SIG_PID=$$
> +
> +SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
> +exit_unresolved () {
> + kill -s $SIG_UNRESOLVED $SIG_PID
> + exit 0
> +}
> +trap 'SIG_RESULT=$UNRESOLVED' $SIG_UNRESOLVED
> +
> +SIG_UNTESTED=$((SIG_BASE + UNTESTED))
> +exit_untested () {
> + kill -s $SIG_UNTESTED $SIG_PID
> + exit 0
> }
> -passed() {
> - prlog " [PASS]"
> - PASSED_CASES="$PASSED_CASES $CASENO"
> +trap 'SIG_RESULT=$UNTESTED' $SIG_UNTESTED
> +
> +SIG_UNSUPPORTED=$((SIG_BASE + UNSUPPORTED))
> +exit_unsupported () {
> + kill -s $SIG_UNSUPPORTED $SIG_PID
> + exit 0
> }
> +trap 'SIG_RESULT=$UNSUPPORTED' $SIG_UNSUPPORTED
>
> +SIG_XFAIL=$((SIG_BASE + XFAIL))
> +exit_xfail () {
> + kill -s $SIG_XFAIL $SIG_PID
> + exit 0
> +}
> +trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
>
> # Run one test case
> run_test() { # testfile
> @@ -135,14 +218,16 @@ run_test() { # testfile
> local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
> testcase $1
> echo "execute: "$1 > $testlog
> - (cd $TRACING_DIR; set -x ; . $1) >> $testlog 2>&1
> - ret=$?
> - if [ $ret -ne 0 ]; then
> - failed
> - catlog $testlog
> - else
> - passed
> + SIG_RESULT=0
> + # setup PID and PPID, $$ is not updated.
> + (cd $TRACING_DIR; read PID _ < /proc/self/stat ;
> + set -e; set -x; . $1) >> $testlog 2>&1
> + eval_result $? $SIG_RESULT
> + if [ $? -eq 0 ]; then
> + # Remove test log if the test was done as it was expected.
> [ $KEEP_LOG -eq 0 ] && rm $testlog
> + else
> + catlog $testlog
> fi
> }
>
> @@ -150,8 +235,15 @@ run_test() { # testfile
> for t in $TEST_CASES; do
> run_test $t
> done
> +
> prlog ""
> prlog "# of passed: " `echo $PASSED_CASES | wc -w`
> prlog "# of failed: " `echo $FAILED_CASES | wc -w`
> -
> -test -z "$FAILED_CASES" # if no error, return 0
> +prlog "# of unresolved: " `echo $UNRESOLVED_CASES | wc -w`
> +prlog "# of untested: " `echo $UNTESTED_CASES | wc -w`
> +prlog "# of unsupported: " `echo $UNSUPPORTED_CASES | wc -w`
> +prlog "# of xfailed: " `echo $XFAILED_CASES | wc -w`
> +prlog "# of undefined(test bug): " `echo $UNDEFINED_CASES | wc -w`
> +
> +# if no error, return 0
> +test -z "$FAILED_CASES$UNDEFINED_CASES$UNRESOLVED_CASES"
> diff --git a/tools/testing/selftests/ftrace/samples/fail.tc b/tools/testing/selftests/ftrace/samples/fail.tc
> new file mode 100644
> index 0000000..15e35b9
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/fail.tc
> @@ -0,0 +1,4 @@
> +#!/bin/sh
> +# description: failure-case example
> +cat non-exist-file
> +echo "this is not executed"
> diff --git a/tools/testing/selftests/ftrace/samples/pass.tc b/tools/testing/selftests/ftrace/samples/pass.tc
> new file mode 100644
> index 0000000..d015493
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/pass.tc
> @@ -0,0 +1,3 @@
> +#!/bin/sh
> +# description: pass-case example
> +return 0
> diff --git a/tools/testing/selftests/ftrace/samples/unresolved.tc b/tools/testing/selftests/ftrace/samples/unresolved.tc
> new file mode 100644
> index 0000000..41e99d3
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/unresolved.tc
> @@ -0,0 +1,4 @@
> +#!/bin/sh
> +# description: unresolved-case example
> +trap exit_unresolved INT
> +kill -INT $PID
> diff --git a/tools/testing/selftests/ftrace/samples/unsupported.tc b/tools/testing/selftests/ftrace/samples/unsupported.tc
> new file mode 100644
> index 0000000..45910ff
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/unsupported.tc
> @@ -0,0 +1,3 @@
> +#!/bin/sh
> +# description: unsupported-case example
> +exit_unsupported
> diff --git a/tools/testing/selftests/ftrace/samples/untested.tc b/tools/testing/selftests/ftrace/samples/untested.tc
> new file mode 100644
> index 0000000..35a4594
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/untested.tc
> @@ -0,0 +1,3 @@
> +#!/bin/sh
> +# description: untested-case example
> +exit_untested
> diff --git a/tools/testing/selftests/ftrace/samples/xfail.tc b/tools/testing/selftests/ftrace/samples/xfail.tc
> new file mode 100644
> index 0000000..9dd3953
> --- /dev/null
> +++ b/tools/testing/selftests/ftrace/samples/xfail.tc
> @@ -0,0 +1,3 @@
> +#!/bin/sh
> +# description: xfail-case example
> +cat non-exist-file || exit_xfail
> diff --git a/tools/testing/selftests/ftrace/test.d/00basic/basic2.tc b/tools/testing/selftests/ftrace/test.d/00basic/basic2.tc
> index b04f30d..bf9a7b0 100644
> --- a/tools/testing/selftests/ftrace/test.d/00basic/basic2.tc
> +++ b/tools/testing/selftests/ftrace/test.d/00basic/basic2.tc
> @@ -1,6 +1,7 @@
> #!/bin/sh
> # description: Basic test for tracers
> +test -f available_tracers
> for t in `cat available_tracers`; do
> - echo $t > current_tracer || exit 1
> + echo $t > current_tracer
> done
> echo nop > current_tracer
> diff --git a/tools/testing/selftests/ftrace/test.d/00basic/basic3.tc b/tools/testing/selftests/ftrace/test.d/00basic/basic3.tc
> index 0c1a3a2..bde6625 100644
> --- a/tools/testing/selftests/ftrace/test.d/00basic/basic3.tc
> +++ b/tools/testing/selftests/ftrace/test.d/00basic/basic3.tc
> @@ -1,8 +1,8 @@
> #!/bin/sh
> # description: Basic trace clock test
> -[ -f trace_clock ] || exit 1
> +test -f trace_clock
> for c in `cat trace_clock | tr -d \[\]`; do
> - echo $c > trace_clock || exit 1
> - grep '\['$c'\]' trace_clock || exit 1
> + echo $c > trace_clock
> + grep '\['$c'\]' trace_clock
> done
> echo local > trace_clock
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> index 5ddfb47..1b8b665 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc
> @@ -1,11 +1,11 @@
> #!/bin/sh
> # description: Kprobe dynamic event - adding and removing
>
> -[ -f kprobe_events ] || exit 1
> +[ -f kprobe_events ] || exit_unsupported # this is configurable
>
> -echo 0 > events/enable || exit 1
> -echo > kprobe_events || exit 1
> -echo p:myevent do_fork > kprobe_events || exit 1
> -grep myevent kprobe_events || exit 1
> -[ -d events/kprobes/myevent ] || exit 1
> +echo 0 > events/enable
> +echo > kprobe_events
> +echo p:myevent do_fork > kprobe_events
> +grep myevent kprobe_events
> +test -d events/kprobes/myevent
> echo > kprobe_events
> diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> index 588fde97..b55c840 100644
> --- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> +++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc
> @@ -1,14 +1,13 @@
> #!/bin/sh
> # description: Kprobe dynamic event - busy event check
>
> -[ -f kprobe_events ] || exit 1
> +[ -f kprobe_events ] || exit_unsupported
>
> -echo 0 > events/enable || exit 1
> -echo > kprobe_events || exit 1
> -echo p:myevent do_fork > kprobe_events || exit 1
> -[ -d events/kprobes/myevent ] || exit 1
> -echo 1 > events/kprobes/myevent/enable || exit 1
> +echo 0 > events/enable
> +echo > kprobe_events
> +echo p:myevent do_fork > kprobe_events
> +test -d events/kprobes/myevent
> +echo 1 > events/kprobes/myevent/enable
> echo > kprobe_events && exit 1 # this must fail
> -echo 0 > events/kprobes/myevent/enable || exit 1
> +echo 0 > events/kprobes/myevent/enable
> echo > kprobe_events # this must succeed
> -
> diff --git a/tools/testing/selftests/ftrace/test.d/template b/tools/testing/selftests/ftrace/test.d/template
> index ce5f735..5448f7a 100644
> --- a/tools/testing/selftests/ftrace/test.d/template
> +++ b/tools/testing/selftests/ftrace/test.d/template
> @@ -1,4 +1,9 @@
> #!/bin/sh
> # description: %HERE DESCRIBE WHAT THIS DOES%
> # you have to add ".tc" extention for your testcase file
> +# Note that all tests are run with "errexit" option.
> +
> exit 0 # Return 0 if the test is passed, otherwise return !0
> +# If the test could not run because of lack of feature, call exit_unsupported
> +# If the test returned unclear results, call exit_unresolved
> +# If the test is a dummy, or a placeholder, call exit_untested
>
>
--
Regards,
Namhyung Kim
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