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+# SPDX-License-Identifier: GPL-2.0
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+# (C) Copyright 2018 Texas Instruments, <www.ti.com>
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+
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+# Test A/B update commands.
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+
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+import os
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+import pytest
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+import u_boot_utils
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+
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+class ABTestDiskImage(object):
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+ """Disk Image used by the A/B tests."""
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+
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+ def __init__(self, u_boot_console):
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+ """Initialize a new ABTestDiskImage object.
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+
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+ Args:
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+ u_boot_console: A U-Boot console.
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+
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+ Returns:
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+ Nothing.
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+ """
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+
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+ filename = 'test_ab_disk_image.bin'
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+
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+ persistent = u_boot_console.config.persistent_data_dir + '/' + filename
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+ self.path = u_boot_console.config.result_dir + '/' + filename
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+
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+ with u_boot_utils.persistent_file_helper(u_boot_console.log, persistent):
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+ if os.path.exists(persistent):
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+ u_boot_console.log.action('Disk image file ' + persistent +
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+ ' already exists')
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+ else:
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+ u_boot_console.log.action('Generating ' + persistent)
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+ fd = os.open(persistent, os.O_RDWR | os.O_CREAT)
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+ os.ftruncate(fd, 524288)
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+ os.close(fd)
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+ cmd = ('sgdisk', persistent)
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+ u_boot_utils.run_and_log(u_boot_console, cmd)
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+
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+ cmd = ('sgdisk', '--new=1:64:512', '--change-name=1:misc',
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+ persistent)
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+ u_boot_utils.run_and_log(u_boot_console, cmd)
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+ cmd = ('sgdisk', '--load-backup=' + persistent)
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+ u_boot_utils.run_and_log(u_boot_console, cmd)
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+
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+ cmd = ('cp', persistent, self.path)
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+ u_boot_utils.run_and_log(u_boot_console, cmd)
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+
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+di = None
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+@pytest.fixture(scope='function')
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+def ab_disk_image(u_boot_console):
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+ global di
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+ if not di:
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+ di = ABTestDiskImage(u_boot_console)
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+ return di
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+
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+@pytest.mark.boardspec('sandbox')
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+@pytest.mark.buildconfigspec('android_ab')
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+@pytest.mark.buildconfigspec('cmd_ab_select')
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+@pytest.mark.requiredtool('sgdisk')
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+def test_ab(ab_disk_image, u_boot_console):
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+ """Test the 'ab_select' command."""
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+
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+ u_boot_console.run_command('host bind 0 ' + ab_disk_image.path)
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+
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+ output = u_boot_console.run_command('ab_select slot_name host 0#misc')
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+ assert 're-initializing A/B metadata' in output
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+ assert 'Attempting slot a, tries remaining 7' in output
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+ output = u_boot_console.run_command('printenv slot_name')
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+ assert 'slot_name=a' in output
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+
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+ output = u_boot_console.run_command('ab_select slot_name host 0:1')
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+ assert 'Attempting slot b, tries remaining 7' in output
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+ output = u_boot_console.run_command('printenv slot_name')
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+ assert 'slot_name=b' in output
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