I like the idea, but gstreamer build-time testing seems like a bit of
a work in progress. Is there some other meson-based component where
this can be showcased and enabled in a more simple way?

Alex

On Fri, 18 Feb 2022 at 00:00, Jose Quaresma <quaresma.jose@...> wrote:
>
> This is an exmple of using the native meson test
>
> gstreamer1.0-meson-qemuwrapper-test.inc
> ^ this is receipe part
>
> meson-qemuwrapper-helper.sh
> ^ this is an helper script to skip unsupported tests
>
> meta/recipes-multimedia/gstreamer/gstreamer1.0/0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch
> ^ this patch helps debugind unsupported tests
>
> With EXTRA_OEMESON_TEST = "gst_gstbin" it will only run
> the gst_gstbin test and the output
> is the following
>
> + meson_do_test
> + export GST_DEBUG=6
> + meson test -C /build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build --print-errorlogs gst_gstbin
>
> ninja: Entering directory `/build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build'
>
> ninja: no work to do.
>
> 1/1 gst_gstbin TIMEOUT        180.12s   killed by signal 15 SIGTERM
>
> >>> GST_PLUGIN_SCANNER_1_0=/build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build/libs/gst/helpers/gst-plugin-scanner GST_PLUGIN_LOADING_WHITELIST=gstreamer GST_STATE_IGNORE_ELEMENTS='' MESON_EXE_WRAPPER=/build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/meson-qemuwrapper GST_PLUGIN_PATH_1_0=/build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build MALLOC_PERTURB_=192 GST_REGISTRY=/build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build/tests/check/gst_gstbin.registry CK_DEFAULT_TIMEOUT=20 GST_PLUGIN_SYSTEM_PATH_1_0='' /build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/meson-qemuwrapper /build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build/tests/check/gst_gstbin
> ――――――――――――――――――――――――――――――――――――― ✀  ―――――――――――――――――――――――――――――――――――――
> Listing only the last 100 lines from a long log.
> 0:00:07.719379569 440069   0x4000025400 DEBUG             GST_STATES gstbin.c:2990:gst_bin_change_state_func:<bin0> iterator done
> 0:00:07.719393717 440069   0x4000061180 LOG              GST_MESSAGE gstmessage.c:304:gst_message_new_custom: source fakesink0: creating new message 0x400c002100 latency
> 0:00:07.719413507 440069   0x4000025400 LOG               GST_STATES gstelement.c:3282:gst_element_change_state_func:<bin0> default handler tries setting state from PLAYING to PAUSED (0023)
> 0:00:07.719438100 440069   0x4000061180 DEBUG                GST_BUS gstbus.c:338:gst_bus_post:<bus0> [msg 0x400c002100] posting on bus latency message: 0x400c002100, time 99:99:99.999999999, seq-num 31, element 'fakesink0', (NULL)
> 0:00:07.719441024 440069   0x4000025400 DEBUG             GST_STATES gstbin.c:3006:gst_bin_change_state_func:<bin0> we have ASYNC elements SUCCESS -> ASYNC
> 0:00:07.719467032 440069   0x4000025400 DEBUG                    bin gstbin.c:2383:gst_bin_sort_iterator_free:<bin0>
> .
> .
> .
> ――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
> Summary of Failures:
>
> 1/1 gst_gstbin TIMEOUT        180.12s   killed by signal 15 SIGTERM
>
> Ok:                 0
> Expected Fail:      0
> Fail:               0
> Unexpected Pass:    0
> Skipped:            0
> Timeout:            1
>
> Full log written to /build/tmp/work/core2-64-poky-linux/gstreamer1.0/1.20.0-r0/build/meson-logs/testlog.txt
>
> + bb_sh_exit_handler
>
> Signed-off-by: Jose Quaresma <quaresma.jose@...>
> ---
>  .../gstreamer1.0-meson-qemuwrapper-test.inc   | 15 ++++++
>  ...show-the-reason-when-spawning-of-gst.patch | 53 +++++++++++++++++++
>  .../gstreamer1.0/meson-qemuwrapper-helper.sh  | 15 ++++++
>  .../gstreamer/gstreamer1.0_1.20.0.bb          |  6 +++
>  4 files changed, 89 insertions(+)
>  create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0-meson-qemuwrapper-test.inc
>  create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0/0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch
>  create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0/meson-qemuwrapper-helper.sh
>
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0-meson-qemuwrapper-test.inc b/meta/recipes-multimedia/gstreamer/gstreamer1.0-meson-qemuwrapper-test.inc
> new file mode 100644
> index 0000000000..c9f4885f82
> --- /dev/null
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0-meson-qemuwrapper-test.inc
> @@ -0,0 +1,15 @@
> +SRC_URI += "file://0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch;striplevel=3"
> +SRC_URI += "file://meson-qemuwrapper-helper.sh"
> +
> +#MESON_QEMU_WRAPPER_HELPER = "${WORKDIR}/meson-qemuwrapper-helper.sh"
> +
> +PACKAGECONFIG[tests] = "-Dtests=enabled,-Dtests=disabled"
> +
> +# run single test
> +EXTRA_OEMESON_TEST = "gst_gstbin"
> +
> +meson_do_test:prepend() {
> +    # run the test with the debug mode enabled
> +    # logs will be placed at build/meson-logs/testlog.txt
> +    export GST_DEBUG=6
> +}
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0/0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch b/meta/recipes-multimedia/gstreamer/gstreamer1.0/0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch
> new file mode 100644
> index 0000000000..22c8750f5b
> --- /dev/null
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0/0001-gstpluginloader-show-the-reason-when-spawning-of-gst.patch
> @@ -0,0 +1,53 @@
> +From 8e1de3f84c2e654515b6d6b16783a4a08dfd118d Mon Sep 17 00:00:00 2001
> +From: Jose Quaresma <quaresma.jose@...>
> +Date: Wed, 8 Dec 2021 22:13:15 +0000
> +Subject: [PATCH] gstpluginloader: show the reason when spawning of
> + gst-plugin-scanner fail
> +
> +This fix helps in cross compiling when the meson tests runs using a qemu wraper
> +
> +Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1701>
> +
> +Upstream-Status: Backport [https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/8e1de3f84c2e654515b6d6b16783a4a08dfd118d]
> +
> +Signed-off-by: Jose Quaresma <quaresma.jose@...>
> +---
> + subprojects/gstreamer/gst/gstpluginloader.c | 14 ++++++++++----
> + 1 file changed, 10 insertions(+), 4 deletions(-)
> +
> +diff --git a/subprojects/gstreamer/gst/gstpluginloader.c b/subprojects/gstreamer/gst/gstpluginloader.c
> +index 10a446fa5e..fb8b45cffa 100644
> +--- a/subprojects/gstreamer/gst/gstpluginloader.c
> ++++ b/subprojects/gstreamer/gst/gstpluginloader.c
> +@@ -413,6 +413,7 @@ gst_plugin_loader_try_helper (GstPluginLoader * loader, gchar * location)
> + {
> +   char *argv[6] = { NULL, };
> +   int c = 0;
> ++  GError *error = NULL;
> +
> + #if defined (__APPLE__) && defined (USR_BIN_ARCH_SWITCH)
> +   if (gst_plugin_loader_use_usr_bin_arch ()) {
> +@@ -432,11 +433,16 @@ gst_plugin_loader_try_helper (GstPluginLoader * loader, gchar * location)
> +     GST_LOG ("Trying to spawn gst-plugin-scanner helper at %s", location);
> +   }
> +
> +-  if (!g_spawn_async_with_pipes (NULL, argv, NULL,
> +-          G_SPAWN_DO_NOT_REAP_CHILD /* | G_SPAWN_STDERR_TO_DEV_NULL */ ,
> +-          NULL, NULL, &loader->child_pid, &loader->fd_w.fd, &loader->fd_r.fd,
> +-          NULL, NULL))
> ++  g_spawn_async_with_pipes (NULL, argv, NULL,
> ++      G_SPAWN_DO_NOT_REAP_CHILD /* | G_SPAWN_STDERR_TO_DEV_NULL */ ,
> ++      NULL, NULL, &loader->child_pid, &loader->fd_w.fd, &loader->fd_r.fd,
> ++      NULL, &error);
> ++
> ++  if (error) {
> ++    GST_ERROR ("Spawning gst-plugin-scanner helper failed: %s", error->message);
> ++    g_clear_error (&error);
> +     return FALSE;
> ++  }
> +
> +   gst_poll_add_fd (loader->fdset, &loader->fd_w);
> +   gst_poll_add_fd (loader->fdset, &loader->fd_r);
> +--
> +2.35.1
> +
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0/meson-qemuwrapper-helper.sh b/meta/recipes-multimedia/gstreamer/gstreamer1.0/meson-qemuwrapper-helper.sh
> new file mode 100644
> index 0000000000..7f03f79292
> --- /dev/null
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0/meson-qemuwrapper-helper.sh
> @@ -0,0 +1,15 @@
> +#!/bin/sh
> +#set -x
> +
> +test="$(basename "$1")"
> +
> +# some tests currently fails so there we skipped the already knowns
> +skipped="$skipped elements_dataurisrc"
> +skipped="$skipped libs_gstnettimeprovider"
> +skipped="$skipped gst_gstelement"
> +skipped="$skipped gst_gstregistry"
> +for s in $skipped; do
> +    if [ "$s" = "$test" ]; then
> +        exit 77
> +    fi
> +done
> diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.20.0.bb b/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.20.0.bb
> index 243f99fee9..38595b8789 100644
> --- a/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.20.0.bb
> +++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.20.0.bb
> @@ -70,3 +70,9 @@ FILES:${PN}-dbg += "${datadir}/gdb ${datadir}/gstreamer-1.0/gdb"
>  CVE_PRODUCT = "gstreamer"
>
>  PTEST_BUILD_HOST_FILES = ""
> +
> +MESON_QEMU_WRAPPER_TEST_ENABLED = "1"
> +
> +GST_MESON_TEST = "${@"gstreamer1.0-meson-qemuwrapper-test.inc" if d.getVar('MESON_QEMU_WRAPPER_TEST_ENABLED') == '1' else ""}"
> +
> +require ${GST_MESON_TEST}
> --
> 2.35.1
>
>
>
>