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support/testing/tests/package/test_weston.py: new runtime test

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This test is a followup of the discussion at:
https://lists.buildroot.org/pipermail/buildroot/2023-July/671639.html

It provides an example of a runtime tests using standard Linux graphic
components (Kernel, DRM, Mesa3D, weston).

Signed-off-by: Julien Olivain <ju.o@free.fr>
[yann.morin.1998@free.fr:
  - use an overlay rather than create config file at runtime
  - sleep in python not in target
  - increase delay to capture DRI CRCs
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Julien Olivain 2023-08-10 22:59:17 +02:00 committed by Yann E. MORIN
parent 40ff422160
commit 4edb0e3456
4 changed files with 196 additions and 0 deletions
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@ -1817,6 +1817,8 @@ F: support/testing/tests/package/test_python_spake2.py
F: support/testing/tests/package/test_rdma_core.py
F: support/testing/tests/package/test_rdma_core/
F: support/testing/tests/package/test_stress_ng.py
F: support/testing/tests/package/test_weston.py
F: support/testing/tests/package/test_weston/
F: support/testing/tests/package/test_xz.py
F: support/testing/tests/package/test_z3.py
F: support/testing/tests/package/test_z3/

177
support/testing/tests/package/test_weston.py Normal file
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@ -0,0 +1,177 @@
import os
import time
import infra.basetest
class TestWeston(infra.basetest.BRTest):
config = \
"""
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
BR2_ROOTFS_OVERLAY="{}"
BR2_PER_PACKAGE_DIRECTORIES=y
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.44"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{}"
BR2_PACKAGE_LIBDRM=y
BR2_PACKAGE_MESA3D=y
BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_SWRAST=y
BR2_PACKAGE_MESA3D_LLVM=y
BR2_PACKAGE_MESA3D_OPENGL_EGL=y
BR2_PACKAGE_MESA3D_OPENGL_ES=y
BR2_PACKAGE_WAYLAND_UTILS=y
BR2_PACKAGE_WESTON=y
BR2_PACKAGE_WESTON_SIMPLE_CLIENTS=y
BR2_TARGET_ROOTFS_CPIO=y
BR2_TARGET_ROOTFS_CPIO_GZIP=y
# BR2_TARGET_ROOTFS_TAR is not set
""".format(
infra.filepath("tests/package/test_weston/overlay"),
infra.filepath("tests/package/test_weston/linux-vkms.fragment")
)
def gen_read_disp_crcs_cmd(self, count=1):
# DRM CRCs are exposed through a sysfs pseudo file, one measure
# per line. The first column is the frame number, the second
# column is the CRC measure. We use "head" to get the needed
# CRC count.
disp_crc_path = "/sys/kernel/debug/dri/0/crtc-0/crc/data"
cmd = f"head -{count} {disp_crc_path}"
# The DRM CRC sysfs pseudo file lines are terminated by '\n'
# and '\0'. We remove the '\0' to have a text-only output.
cmd += " | tr -d '\\000'"
# Finally, we drop the frame counter, and keep only the second
# column (CRC values)
cmd += " | cut -f 2 -d ' '"
return cmd
def gen_count_unique_disp_crcs_cmd(self, count=10):
# We get the command generating one CRC per line...
cmd = self.gen_read_disp_crcs_cmd(count)
# ...then count the number of unique values
cmd += " | uniq | wc -l"
return cmd
def start_weston(self):
self.assertRunOk("export XDG_RUNTIME_DIR=/tmp")
cmd = "weston"
cmd += " --config=/etc/weston.ini"
cmd += " --continue-without-input"
cmd += " --log=/tmp/weston.log"
cmd += " &> /dev/null &"
self.assertRunOk(cmd)
self.assertRunOk("export WAYLAND_DISPLAY=wayland-1")
def wait_for_weston(self):
# We wait for the wayland socket to appear...
wayland_socket = "${XDG_RUNTIME_DIR}/${WAYLAND_DISPLAY}"
cmd = f"while [ ! -e \"{wayland_socket}\" ] ; do sleep 1 ; done"
self.assertRunOk(cmd, timeout=10)
def stop_weston(self):
cmd = "killall weston && sleep 3"
self.assertRunOk(cmd)
def test_run(self):
img = os.path.join(self.builddir, "images", "rootfs.cpio.gz")
kern = os.path.join(self.builddir, "images", "Image")
self.emulator.boot(arch="aarch64",
kernel=kern,
kernel_cmdline=["console=ttyAMA0"],
options=["-M", "virt",
"-cpu", "cortex-a57",
"-smp", "4",
"-m", "256M",
"-initrd", img])
self.emulator.login()
# Check the weston binary can execute
self.assertRunOk("weston --version")
self.start_weston()
self.wait_for_weston()
# Check a simple info client can communicate with the compositor
self.assertRunOk("wayland-info", timeout=10)
# This test will use the Kernel VKMS DRM Display CRC support,
# which is exposed in debugfs. See:
# https://docs.kernel.org/gpu/drm-uapi.html#display-crc-support
self.assertRunOk("mount -t debugfs none /sys/kernel/debug/")
# We get 10 consecutive DRM frame CRCs and count how many
# unique CRCs we have. Since weston is supposed to run idle,
# we should have 10 times the same display CRC.
cmd = self.gen_count_unique_disp_crcs_cmd()
output, exit_code = self.emulator.run(cmd)
self.assertEqual(exit_code, 0)
self.assertEqual(int(output[0]), 1)
# We save the CRC value of an empty weston desktop for
# later...
cmd = self.gen_read_disp_crcs_cmd()
output, exit_code = self.emulator.run(cmd)
self.assertEqual(exit_code, 0)
weston_desktop_crc = int(output[0], 16)
# We start the weston-simple-egl in background... Every
# rendered frame is supposed to be different (as the triangle
# animation is derived from the system time). Since all the
# rendering (client application and compositor) is in
# software, we sleep a bit to let those program to settle.
self.assertRunOk("weston-simple-egl >/dev/null 2>&1 &")
time.sleep(8)
# Since the weston-simple-egl client is supposed to run and
# display something, we are now supposed to measure a
# different display CRC than the one we measured when the
# desktop was empty.
cmd = self.gen_read_disp_crcs_cmd()
output, exit_code = self.emulator.run(cmd)
self.assertEqual(exit_code, 0)
self.assertNotEqual(int(output[0], 16), weston_desktop_crc)
# While weston-simple-egl is running, we check the VKMS DRM
# CRCs are now changing. We get many CRCs, one per display
# driver refresh (at ~60Hz). Since all the rendering is in
# software, we can expect a slow frame rate. In 300 captured
# CRCs (5s), we expect at least 5 different values (i.e. 1 fps).
# This guarantees the rendering pipeline is working, while we
# remain very permissive to slow emulation situations.
# Increase timeout, as the command is expected to run about 5s,
# which is the default timeout.
cmd = self.gen_count_unique_disp_crcs_cmd(300)
output, exit_code = self.emulator.run(cmd, timeout=10)
self.assertEqual(exit_code, 0)
self.assertGreaterEqual(int(output[0]), 5)
# We stop weston-simple-egl, and sleep a bit to let Weston do
# its cleanup and desktop repaint refresh...
self.assertRunOk("killall weston-simple-egl")
time.sleep(4)
# After we stopped the application, we should have the initial
# weston desktop background. The CRC we measure now should be
# the same as the one we saved earlier.
cmd = self.gen_read_disp_crcs_cmd()
output, exit_code = self.emulator.run(cmd)
self.assertEqual(exit_code, 0)
self.assertEqual(int(output[0], 16), weston_desktop_crc)
self.stop_weston()
# Now weston is supposed to be stopped,
# a simple client is expected to fail.
_, exit_code = self.emulator.run("wayland-info")
self.assertNotEqual(exit_code, 0)

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support/testing/tests/package/test_weston/linux-vkms.fragment Normal file
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CONFIG_DEBUG_FS=y
CONFIG_DRM_VKMS=y

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support/testing/tests/package/test_weston/overlay/etc/weston.ini Normal file
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@ -0,0 +1,15 @@
# The shell "clock-format" is set to "none", in order to have stable
# display output, independant from the time. The display output can
# then be reliably checked with VKMS CRC.
# "startup-animation" and "close-animation" are set to "none" for
# faster transitions (fade animations with a software GLES
# implementation tend to be slow).
# Finally, we force the smallest standard display output mode
# resolution, again for faster test execution.
[shell]
clock-format=none
startup-animation=none
close-animation=none
[output]
name=Virtual-1
mode=640x480