On Wed, May 27, 2015 at 04:54:24PM +0100, Derek Morton wrote:
> Unit test to check a segfaulting subtest is handled correctly.
>
> v2: Added script to check subtest results
> v3: Removed script. Updated test to use fork to monitor return status.
>
> Signed-off-by: Derek Morton <derek.j.morton@xxxxxxxxx>
> ---
> lib/tests/Makefile.sources | 1 +
> lib/tests/igt_segfault.c | 139 +++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 140 insertions(+)
> create mode 100644 lib/tests/igt_segfault.c
>
> diff --git a/lib/tests/Makefile.sources b/lib/tests/Makefile.sources
> index 10e0617..5fa0b31 100644
> --- a/lib/tests/Makefile.sources
> +++ b/lib/tests/Makefile.sources
> @@ -8,6 +8,7 @@ check_PROGRAMS = \
> igt_simple_test_subtests \
> igt_timeout \
> igt_invalid_subtest_name \
> + igt_segfault \
> $(NULL)
>
> check_SCRIPTS = \
> diff --git a/lib/tests/igt_segfault.c b/lib/tests/igt_segfault.c
> new file mode 100644
> index 0000000..b420b1a
> --- /dev/null
> +++ b/lib/tests/igt_segfault.c
> @@ -0,0 +1,139 @@
> +/*
> + * Copyright © 2015 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + *
> + * Authors:
> + * Derek Morton <derek.j.morton@xxxxxxxxx>
> + *
> + */
> +
> +/*
> + * Testcase: Test the framework catches a segfault and returns an error.
> + *
> + * 1. Test a crashing simple test is reported.
> + * 2. Test a crashing subtest is reported.
> + * 3. Test a crashing subtest following a passing subtest is reported.
> + * 4. Test a crashing subtest preceeding a passing subtest is reported.
> + */
> +
> +#include <stdlib.h>
> +#include <sys/wait.h>
> +#include <sys/types.h>
> +#include <assert.h>
> +#include <errno.h>
> +
> +#include "drmtest.h"
> +#include "igt_core.h"
> +
> +/*
> + * We need to hide assert from the cocci igt test refactor spatch.
> + *
> + * IMPORTANT: Test infrastructure tests are the only valid places where using
> + * assert is allowed.
> + */
> +#define internal_assert assert
> +
> +bool simple;
> +bool runa;
> +bool runc;
> +char test[] = "test";
> +char *argv_run[] = { test };
> +
> +static int do_fork(void)
> +{
> + int pid, status;
> + int argc;
> + void (*crashme)(void) = NULL;
> +
> + switch (pid = fork()) {
> + case -1:
> + internal_assert(0);
> + case 0:
> + if (simple) {
> + argc = 1;
> + igt_simple_init(argc, argv_run);
> + crashme();
> +
> + igt_exit();
> + } else {
> +
> + argc = 1;
> + igt_subtest_init(argc, argv_run);
> +
> + if(runa)
> + igt_subtest("A")
> + ;
> +
> + igt_subtest("B")
> + crashme();
> +
> + if(runc)
> + igt_subtest("C")
> + ;
> +
> + igt_exit();
> + }
> + default:
> + while (waitpid(pid, &status, 0) == -1 &&
> + errno == EINTR)
> + ;
> +
> + if(WIFSIGNALED(status))
> + return WTERMSIG(status) + 128;
> +
> + return WEXITSTATUS(status);
> + }
> +}
> +
> +int main(int argc, char **argv)
> +{
> + /* Test Crash in simple test is reported */
> + simple = true;
> + runa=false;
> + runc=false;
> + igt_info("Simple test.\n");
> + fflush(stdout);
> + internal_assert(do_fork() == SIGSEGV + 128);
> +
> + /* Test crash in a single subtest is reported */
> + simple = false;
> + igt_info("Single subtest.\n");
> + fflush(stdout);
> + internal_assert(do_fork() == SIGSEGV + 128);
This one here fails for me when running make check. I didn't look into
details. Also something seemed off with the content-encoding of your mail,
at least git apply-mbox complained. I didn't debug but applied it
manually.
Also please add igt_segfault to the relevant .gitignore.
-Daniel
> +
> + /* Test crash in a subtest following a pass is reported */
> + simple = false;
> + runa=true;
> + igt_info("Passing then crashing subtest.\n");
> + fflush(stdout);
> + internal_assert(do_fork() == SIGSEGV + 128);
> +
> + /* Test crash in a subtest preceeding a pass is reported */
> + simple = false;
> + runa=false;
> + runc=true;
> + igt_info("Crashing then passing subtest.\n");
> + fflush(stdout);
> + internal_assert(do_fork() == SIGSEGV + 128);
> +
> + return 0;
> +}
> +
> --
> 1.9.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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