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tests/acceptance/integratorcp: Verify Tux is displayed on framebuffer

Add a test that verifies the Tux logo is displayed on the framebuffer.

We simply follow the OpenCV "Template Matching with Multiple Objects"
tutorial, replacing Lionel Messi by Tux:
https://docs.opencv.org/4.2.0/d4/dc6/tutorial_py_template_matching.html

When OpenCV and NumPy are installed, this test can be run using:

$ AVOCADO_ALLOW_UNTRUSTED_CODE=hmmm \
avocado --show=app,framebuffer run -t device:framebuffer \
tests/acceptance/machine_arm_integratorcp.py
JOB ID : 8c46b0f8269242e87d738247883ea2a470df949e
JOB LOG : avocado/job-results/job-2020-01-31T21.38-8c46b0f/job.log
(1/1) tests/acceptance/machine_arm_integratorcp.py:IntegratorMachine.test_framebuffer_tux_logo:
framebuffer: found Tux at position [x, y] = (0, 0)
PASS (3.96 s)
RESULTS : PASS 1 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0
JOB TIME : 4.23 s

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-id: 20200225172501.29609-5-philmd@redhat.com
Message-Id: <20200131211102.29612-3-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

authored by

Philippe Mathieu-Daudé and committed by
Peter Maydell 15b1bdca 595f1aca

+52
+52
tests/acceptance/machine_arm_integratorcp.py
··· 9 9 # later. See the COPYING file in the top-level directory. 10 10 11 11 import os 12 + import logging 12 13 13 14 from avocado import skipUnless 14 15 from avocado_qemu import Test 15 16 from avocado_qemu import wait_for_console_pattern 17 + 18 + 19 + NUMPY_AVAILABLE = True 20 + try: 21 + import numpy as np 22 + except ImportError: 23 + NUMPY_AVAILABLE = False 24 + 25 + CV2_AVAILABLE = True 26 + try: 27 + import cv2 28 + except ImportError: 29 + CV2_AVAILABLE = False 30 + 16 31 17 32 class IntegratorMachine(Test): 18 33 ··· 45 60 """ 46 61 self.boot_integratorcp() 47 62 wait_for_console_pattern(self, 'Log in as root') 63 + 64 + @skipUnless(NUMPY_AVAILABLE, 'Python NumPy not installed') 65 + @skipUnless(CV2_AVAILABLE, 'Python OpenCV not installed') 66 + @skipUnless(os.getenv('AVOCADO_ALLOW_UNTRUSTED_CODE'), 'untrusted code') 67 + def test_framebuffer_tux_logo(self): 68 + """ 69 + Boot Linux and verify the Tux logo is displayed on the framebuffer. 70 + :avocado: tags=arch:arm 71 + :avocado: tags=machine:integratorcp 72 + :avocado: tags=device:pl110 73 + :avocado: tags=device:framebuffer 74 + """ 75 + screendump_path = os.path.join(self.workdir, "screendump.pbm") 76 + tuxlogo_url = ('https://github.com/torvalds/linux/raw/v2.6.12/' 77 + 'drivers/video/logo/logo_linux_vga16.ppm') 78 + tuxlogo_hash = '3991c2ddbd1ddaecda7601f8aafbcf5b02dc86af' 79 + tuxlogo_path = self.fetch_asset(tuxlogo_url, asset_hash=tuxlogo_hash) 80 + 81 + self.boot_integratorcp() 82 + framebuffer_ready = 'Console: switching to colour frame buffer device' 83 + wait_for_console_pattern(self, framebuffer_ready) 84 + self.vm.command('human-monitor-command', command_line='stop') 85 + self.vm.command('human-monitor-command', 86 + command_line='screendump %s' % screendump_path) 87 + logger = logging.getLogger('framebuffer') 88 + 89 + cpu_count = 1 90 + match_threshold = 0.92 91 + screendump_bgr = cv2.imread(screendump_path) 92 + screendump_gray = cv2.cvtColor(screendump_bgr, cv2.COLOR_BGR2GRAY) 93 + result = cv2.matchTemplate(screendump_gray, cv2.imread(tuxlogo_path, 0), 94 + cv2.TM_CCOEFF_NORMED) 95 + loc = np.where(result >= match_threshold) 96 + tux_count = 0 97 + for tux_count, pt in enumerate(zip(*loc[::-1]), start=1): 98 + logger.debug('found Tux at position [x, y] = %s', pt) 99 + self.assertGreaterEqual(tux_count, cpu_count)