linux-kernel - Re: [PATCH 1/4] selftests/nolibc: add a test-report target

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Message-Id: <20230605065459.153001-1-falcon@tinylab.org>
Date:   Mon,  5 Jun 2023 14:54:59 +0800
From:   Zhangjin Wu <falcon@...ylab.org>
To:     w@....eu
Cc:     arnd@...db.de, falcon@...ylab.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org,
        thomas@...ch.de
Subject: Re: [PATCH 1/4] selftests/nolibc: add a test-report target

> On Mon, Jun 05, 2023 at 11:48:52AM +0800, Zhangjin Wu wrote:
> > A standalone test-report target is added to let the run, run-user and
> > rerun targets share them.
> > 
> > Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
> > ---
> >  tools/testing/selftests/nolibc/Makefile | 26 ++++++++++++-------------
> >  1 file changed, 13 insertions(+), 13 deletions(-)
> > 
> > diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
> > index be4159837494..8149ace2938a 100644
> > --- a/tools/testing/selftests/nolibc/Makefile
> > +++ b/tools/testing/selftests/nolibc/Makefile
> > @@ -127,14 +127,18 @@ nolibc-test: nolibc-test.c sysroot/$(ARCH)/include
> >  libc-test: nolibc-test.c
> >  	$(QUIET_CC)$(CC) -o $@ $<
> >  
> > -# qemu user-land test
> > -run-user: nolibc-test
> > -	$(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
> > +test-report:
> >  	$(Q)awk '/\[OK\]$$/{p++} /\[FAIL\]$$/{f++} /\[SKIPPED\]$$/{s++} \
> >  	         END{ printf("%d test(s) passed, %d skipped, %d failed.", p, s, f); \
> >  	         if (s+f > 0) printf(" See all results in %s\n", ARGV[1]); else print; }' \
> >  	         $(CURDIR)/run.out
> >  
> > +# qemu user-land test
> > +_run-user: nolibc-test
> > +	$(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
> > +
> > +run-user: _run-user test-report
> > +
> 
> This will not reliably work, there's no ordering here, nothing guarantees
> that test-report will run *after* _run-user (e.g. make -j). Another
> approach is needed if you want to factor this, but in general creating
> sequences in makefiles is difficult and often more painful than having
> 3 times the same 3 lines.
>

Ok, thanks, what about this?

    # LOG_REPORT: report the test results
    LOG_REPORT   := awk '/\[OK\][\r]*$$/{p++} /\[FAIL\][\r]*$$/{f++} /\[SKIPPED\][\r]*$$/{s++} \
	                 END{ printf("%d test(s) passed, %d skipped, %d failed.", p, s, f); \
	                 printf(" See all results in %s\n", ARGV[1]); }'

    run-user: nolibc-test
	$(Q)qemu-$(QEMU_ARCH) ./nolibc-test > "$(CURDIR)/run.out" || :
	$(Q)$(LOG_REPORT) $(CURDIR)/run.out

    run: kernel
	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
	$(Q)$(LOG_REPORT) $(CURDIR)/run.out

    rerun:
	$(Q)qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(srctree)/$(IMAGE)" -serial stdio $(QEMU_ARGS) > "$(CURDIR)/run.out"
	$(Q)$(LOG_REPORT) $(CURDIR)/run.out

Or we directly add a standalone test report script? something like
tools/testing/selftests/nolibc/report.sh

    #!/bin/sh
    #
    # report.sh -- report the test results of nolibc-test
    #
    
    LOG_FILE=$1
    [ ! -f "$LOG_FILE" ] && echo "Usage: $0 /path/to/run.out"
    
    awk '
        /\[OK\][\r]*$$/{ p++ }
        /\[FAIL\][\r]*$$/{ f++ }
        /\[SKIPPED\][\r]*$$/{ s++ }
    
        END {
            printf("%d test(s) passed, %d skipped, %d failed.", p, s, f);
            printf(" See all results in %s\n", ARGV[1]);
        }' $LOG_FILE

And use it like this:

    LOG_REPORT           = $(CURDIR)/report.sh

Best regards,
Zhangjin

> Willy