| # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Unittests for the osutils.py module (imagine that!).""" |
| |
| from __future__ import print_function |
| |
| import collections |
| import glob |
| import mock |
| import os |
| |
| from chromite.lib import cros_build_lib |
| from chromite.lib import cros_build_lib_unittest |
| from chromite.lib import cros_test_lib |
| from chromite.lib import osutils |
| from chromite.lib import partial_mock |
| |
| |
| class TestOsutils(cros_test_lib.TempDirTestCase): |
| """General unittests for the osutils module.""" |
| |
| def testReadWriteFile(self): |
| """Verify we can write data to a file, and then read it back.""" |
| filename = os.path.join(self.tempdir, 'foo') |
| data = 'alsdkfjasldkfjaskdlfjasdf' |
| self.assertEqual(osutils.WriteFile(filename, data), None) |
| self.assertEqual(osutils.ReadFile(filename), data) |
| |
| def testSudoWrite(self): |
| """Verify that we can write a file as sudo.""" |
| with osutils.TempDir(sudo_rm=True) as tempdir: |
| root_owned_dir = os.path.join(tempdir, 'foo') |
| self.assertTrue(osutils.SafeMakedirs(root_owned_dir, sudo=True)) |
| for atomic in (True, False): |
| filename = os.path.join(root_owned_dir, |
| 'bar.atomic' if atomic else 'bar') |
| self.assertRaises(IOError, osutils.WriteFile, filename, 'data') |
| |
| osutils.WriteFile(filename, 'test', atomic=atomic, sudo=True) |
| self.assertEqual('test', osutils.ReadFile(filename)) |
| self.assertEqual(0, os.stat(filename).st_uid) |
| |
| # Appending to a file is not supported with sudo. |
| self.assertRaises(ValueError, osutils.WriteFile, |
| os.path.join(root_owned_dir, 'nope'), 'data', |
| sudo=True, mode='a') |
| |
| def testSafeSymlink(self): |
| """Test that we can create symlinks.""" |
| with osutils.TempDir(sudo_rm=True) as tempdir: |
| file_a = os.path.join(tempdir, 'a') |
| osutils.WriteFile(file_a, 'a') |
| |
| file_b = os.path.join(tempdir, 'b') |
| osutils.WriteFile(file_b, 'b') |
| |
| user_dir = os.path.join(tempdir, 'bar') |
| user_link = os.path.join(user_dir, 'link') |
| osutils.SafeMakedirs(user_dir) |
| |
| root_dir = os.path.join(tempdir, 'foo') |
| root_link = os.path.join(root_dir, 'link') |
| osutils.SafeMakedirs(root_dir, sudo=True) |
| |
| # We can create and override links owned by a non-root user. |
| osutils.SafeSymlink(file_a, user_link) |
| self.assertEqual('a', osutils.ReadFile(user_link)) |
| |
| osutils.SafeSymlink(file_b, user_link) |
| self.assertEqual('b', osutils.ReadFile(user_link)) |
| |
| # We can create and override links owned by root. |
| osutils.SafeSymlink(file_a, root_link, sudo=True) |
| self.assertEqual('a', osutils.ReadFile(root_link)) |
| |
| osutils.SafeSymlink(file_b, root_link, sudo=True) |
| self.assertEqual('b', osutils.ReadFile(root_link)) |
| |
| def testSafeUnlink(self): |
| """Test unlinking files work (existing or not).""" |
| def f(dirname, sudo=False): |
| dirname = os.path.join(self.tempdir, dirname) |
| path = os.path.join(dirname, 'foon') |
| os.makedirs(dirname) |
| open(path, 'w').close() |
| self.assertTrue(os.path.exists(path)) |
| if sudo: |
| cros_build_lib.SudoRunCommand( |
| ['chown', 'root:root', '-R', '--', dirname], print_cmd=False) |
| self.assertRaises(EnvironmentError, os.unlink, path) |
| self.assertTrue(osutils.SafeUnlink(path, sudo=sudo)) |
| self.assertFalse(os.path.exists(path)) |
| self.assertFalse(osutils.SafeUnlink(path)) |
| self.assertFalse(os.path.exists(path)) |
| |
| f("nonsudo", False) |
| f("sudo", True) |
| |
| def testSafeMakedirs(self): |
| """Test creating directory trees work (existing or not).""" |
| path = os.path.join(self.tempdir, 'a', 'b', 'c', 'd', 'e') |
| self.assertTrue(osutils.SafeMakedirs(path)) |
| self.assertTrue(os.path.exists(path)) |
| self.assertFalse(osutils.SafeMakedirs(path)) |
| self.assertTrue(os.path.exists(path)) |
| |
| def testSafeMakedirs_error(self): |
| """Check error paths.""" |
| self.assertRaises(OSError, osutils.SafeMakedirs, '/foo/bar/cow/moo/wee') |
| self.assertRaises(OSError, osutils.SafeMakedirs, '') |
| |
| def testSafeMakedirsSudo(self): |
| """Test creating directory trees work as root (existing or not).""" |
| path = os.path.join(self.tempdir, 'a', 'b', 'c', 'd', 'e') |
| self.assertTrue(osutils.SafeMakedirs(path, sudo=True)) |
| self.assertTrue(os.path.exists(path)) |
| self.assertFalse(osutils.SafeMakedirs(path, sudo=True)) |
| self.assertTrue(os.path.exists(path)) |
| self.assertEqual(os.stat(path).st_uid, 0) |
| # Have to manually clean up as a non-root `rm -rf` will fail. |
| cros_build_lib.SudoRunCommand(['rm', '-rf', self.tempdir], print_cmd=False) |
| |
| def testRmDir(self): |
| """Test that removing dirs work.""" |
| path = os.path.join(self.tempdir, 'a', 'b', 'c', 'd', 'e') |
| |
| self.assertRaises(EnvironmentError, osutils.RmDir, path) |
| osutils.SafeMakedirs(path) |
| osutils.RmDir(path) |
| osutils.RmDir(path, ignore_missing=True) |
| self.assertRaises(EnvironmentError, osutils.RmDir, path) |
| |
| osutils.SafeMakedirs(path) |
| osutils.RmDir(path) |
| self.assertFalse(os.path.exists(path)) |
| |
| def testRmDirSudo(self): |
| """Test that removing dirs via sudo works.""" |
| subpath = os.path.join(self.tempdir, 'a') |
| path = os.path.join(subpath, 'b', 'c', 'd', 'e') |
| self.assertTrue(osutils.SafeMakedirs(path, sudo=True)) |
| self.assertRaises(OSError, osutils.RmDir, path) |
| osutils.RmDir(subpath, sudo=True) |
| self.assertRaises(cros_build_lib.RunCommandError, |
| osutils.RmDir, subpath, sudo=True) |
| |
| def testTouchFile(self): |
| """Test that we can touch files.""" |
| path = os.path.join(self.tempdir, 'touchit') |
| self.assertFalse(os.path.exists(path)) |
| osutils.Touch(path) |
| self.assertTrue(os.path.exists(path)) |
| self.assertEqual(os.path.getsize(path), 0) |
| |
| def testTouchFileSubDir(self): |
| """Test that we can touch files in non-existent subdirs.""" |
| path = os.path.join(self.tempdir, 'a', 'b', 'c', 'touchit') |
| self.assertFalse(os.path.exists(os.path.dirname(path))) |
| osutils.Touch(path, makedirs=True) |
| self.assertTrue(os.path.exists(path)) |
| self.assertEqual(os.path.getsize(path), 0) |
| |
| |
| class TestProcess(cros_build_lib_unittest.RunCommandTestCase): |
| """Tests for osutils.IsChildProcess.""" |
| |
| def testIsChildProcess(self): |
| """Test IsChildProcess with no name.""" |
| mock_pstree_output = 'a(1)-+-b(2)\n\t|-c(3)\n\t|-foo(4)-bar(5)' |
| self.rc.AddCmdResult(partial_mock.Ignore(), output=mock_pstree_output) |
| self.assertTrue(osutils.IsChildProcess(4)) |
| self.assertTrue(osutils.IsChildProcess(4, name='foo')) |
| self.assertFalse(osutils.IsChildProcess(5, name='foo')) |
| |
| |
| class TempDirTests(cros_test_lib.TestCase): |
| """Unittests of osutils.TempDir. |
| |
| Unlike other test classes in this file, TempDirTestCase isn't used as a base |
| class, because that is the functionality under test. |
| """ |
| PREFIX = 'chromite.test.osutils.TempDirTests' |
| |
| class HelperException(Exception): |
| """Exception for tests to raise to test exception handling.""" |
| |
| class HelperExceptionInner(Exception): |
| """Exception for tests to raise to test exception handling.""" |
| |
| def testBasicSuccessEmpty(self): |
| """Test we create and cleanup an empty tempdir.""" |
| with osutils.TempDir(prefix=self.PREFIX) as td: |
| tempdir = td |
| # Show the temp directory exists and is empty. |
| self.assertTrue(os.path.isdir(tempdir)) |
| self.assertEquals(os.listdir(tempdir), []) |
| |
| # Show the temp directory no longer exists. |
| self.assertNotExists(tempdir) |
| |
| def testBasicSuccessNotEmpty(self): |
| """Test we cleanup tempdir with stuff in it.""" |
| with osutils.TempDir(prefix=self.PREFIX) as td: |
| tempdir = td |
| # Show the temp directory exists and is empty. |
| self.assertTrue(os.path.isdir(tempdir)) |
| self.assertEquals(os.listdir(tempdir), []) |
| |
| # Create an empty file. |
| osutils.Touch(os.path.join(tempdir, 'foo.txt')) |
| |
| # Create nested sub directories. |
| subdir = os.path.join(tempdir, 'foo', 'bar', 'taco') |
| os.makedirs(subdir) |
| osutils.Touch(os.path.join(subdir, 'sauce.txt')) |
| |
| # Show the temp directory no longer exists. |
| self.assertNotExists(tempdir) |
| |
| def testErrorCleanup(self): |
| """Test we cleanup, even if an exception is raised.""" |
| try: |
| with osutils.TempDir(prefix=self.PREFIX) as td: |
| tempdir = td |
| raise TempDirTests.HelperException() |
| except TempDirTests.HelperException: |
| pass |
| |
| # Show the temp directory no longer exists. |
| self.assertNotExists(tempdir) |
| |
| def testCleanupExceptionContextException(self): |
| """Test an exception during cleanup if the context DID raise.""" |
| was_raised = False |
| tempdir_obj = osutils.TempDir(prefix=self.PREFIX) |
| |
| with mock.patch.object(osutils, '_TempDirTearDown', |
| side_effect=TempDirTests.HelperException): |
| try: |
| with tempdir_obj as td: |
| tempdir = td |
| raise TempDirTests.HelperExceptionInner() |
| except TempDirTests.HelperExceptionInner: |
| was_raised = True |
| |
| # Show that the exception exited the context. |
| self.assertTrue(was_raised) |
| |
| # Verify the tempdir object no longer contains a reference to the tempdir. |
| self.assertIsNone(tempdir_obj.tempdir) |
| |
| # Cleanup the dir leaked by our mock exception. |
| os.rmdir(tempdir) |
| |
| def testCleanupExceptionNoContextException(self): |
| """Test an exception during cleanup if the context did NOT raise.""" |
| was_raised = False |
| tempdir_obj = osutils.TempDir(prefix=self.PREFIX) |
| |
| with mock.patch.object(osutils, '_TempDirTearDown', |
| side_effect=TempDirTests.HelperException): |
| try: |
| with tempdir_obj as td: |
| tempdir = td |
| except TempDirTests.HelperException: |
| was_raised = True |
| |
| # Show that the exception exited the context. |
| self.assertTrue(was_raised) |
| |
| # Verify the tempdir object no longer contains a reference to the tempdir. |
| self.assertIsNone(tempdir_obj.tempdir) |
| |
| # Cleanup the dir leaked by our mock exception. |
| os.rmdir(tempdir) |
| |
| def testSkipCleanup(self): |
| """Test that we leave behind tempdirs when requested.""" |
| tempdir_obj = osutils.TempDir(prefix=self.PREFIX, delete=False) |
| tempdir = tempdir_obj.tempdir |
| tempdir_obj.Cleanup() |
| # Ensure we cleaned up ... |
| self.assertIsNone(tempdir_obj.tempdir) |
| # ... but leaked the directory. |
| self.assertExists(tempdir) |
| # Now really cleanup the directory leaked by the test. |
| os.rmdir(tempdir) |
| |
| def testSkipCleanupGlobal(self): |
| """Test that we reset global tempdir as expected even with skip.""" |
| with osutils.TempDir(prefix=self.PREFIX, set_global=True) as tempdir: |
| tempdir_before = osutils.GetGlobalTempDir() |
| tempdir_obj = osutils.TempDir(prefix=self.PREFIX, set_global=True, |
| delete=False) |
| tempdir_inside = osutils.GetGlobalTempDir() |
| tempdir_obj.Cleanup() |
| tempdir_after = osutils.GetGlobalTempDir() |
| |
| # We shouldn't leak the outer directory. |
| self.assertNotExists(tempdir) |
| self.assertEqual(tempdir_before, tempdir_after) |
| # This is a strict substring check. |
| self.assertLess(tempdir_before, tempdir_inside) |
| |
| |
| class MountTests(cros_test_lib.TestCase): |
| """Unittests for osutils mounting and umounting helpers.""" |
| |
| def testMountTmpfsDir(self): |
| """Verify mounting a tmpfs works""" |
| cleaned = False |
| with osutils.TempDir(prefix='chromite.test.osutils') as tempdir: |
| st_before = os.stat(tempdir) |
| try: |
| # Mount the dir and verify it worked. |
| osutils.MountTmpfsDir(tempdir) |
| st_after = os.stat(tempdir) |
| self.assertNotEqual(st_before.st_dev, st_after.st_dev) |
| |
| # Unmount the dir and verify it worked. |
| osutils.UmountDir(tempdir) |
| cleaned = True |
| |
| # Finally make sure it's cleaned up. |
| self.assertFalse(os.path.exists(tempdir)) |
| finally: |
| if not cleaned: |
| cros_build_lib.SudoRunCommand(['umount', '-lf', tempdir], |
| error_code_ok=True) |
| |
| |
| class IteratePathsTest(cros_test_lib.TestCase): |
| """Test iterating through all segments of a path.""" |
| |
| def testType(self): |
| """Check that return value is an iterator.""" |
| self.assertTrue(isinstance(osutils.IteratePaths('/'), collections.Iterator)) |
| |
| def testRoot(self): |
| """Test iterating from root directory.""" |
| inp = '/' |
| exp = ['/'] |
| self.assertEquals(list(osutils.IteratePaths(inp)), exp) |
| |
| def testOneDir(self): |
| """Test iterating from a directory in a root directory.""" |
| inp = '/abc' |
| exp = ['/', '/abc'] |
| self.assertEquals(list(osutils.IteratePaths(inp)), exp) |
| |
| def testTwoDirs(self): |
| """Test iterating two dirs down.""" |
| inp = '/abc/def' |
| exp = ['/', '/abc', '/abc/def'] |
| self.assertEquals(list(osutils.IteratePaths(inp)), exp) |
| |
| def testNormalize(self): |
| """Test argument being normalized.""" |
| cases = [ |
| ('//', ['/']), |
| ('///', ['/']), |
| ('/abc/', ['/', '/abc']), |
| ('/abc//def', ['/', '/abc', '/abc/def']), |
| ] |
| for inp, exp in cases: |
| self.assertEquals(list(osutils.IteratePaths(inp)), exp) |
| |
| |
| class IteratePathParentsTest(cros_test_lib.TestCase): |
| """Test parent directory iteration functionality.""" |
| |
| def _RunForPath(self, path, expected): |
| result_components = [] |
| for p in osutils.IteratePathParents(path): |
| result_components.append(os.path.basename(p)) |
| |
| result_components.reverse() |
| if expected is not None: |
| self.assertEquals(expected, result_components) |
| |
| def testIt(self): |
| """Run the test vectors.""" |
| vectors = { |
| '/': [''], |
| '/path/to/nowhere': ['', 'path', 'to', 'nowhere'], |
| '/path/./to': ['', 'path', 'to'], |
| '//path/to': ['', 'path', 'to'], |
| 'path/to': None, |
| '': None, |
| } |
| for p, e in vectors.iteritems(): |
| self._RunForPath(p, e) |
| |
| |
| class FindInPathParentsTest(cros_test_lib.TempDirTestCase): |
| """Test FindInPathParents functionality.""" |
| |
| D = cros_test_lib.Directory |
| |
| DIR_STRUCT = [ |
| D('a', [ |
| D('.repo', []), |
| D('b', [ |
| D('c', []) |
| ]) |
| ]) |
| ] |
| |
| START_PATH = os.path.join('a', 'b', 'c') |
| |
| def setUp(self): |
| cros_test_lib.CreateOnDiskHierarchy(self.tempdir, self.DIR_STRUCT) |
| |
| def testFound(self): |
| """Target is found.""" |
| found = osutils.FindInPathParents( |
| '.repo', os.path.join(self.tempdir, self.START_PATH)) |
| self.assertEquals(found, os.path.join(self.tempdir, 'a', '.repo')) |
| |
| def testNotFound(self): |
| """Target is not found.""" |
| found = osutils.FindInPathParents( |
| 'does.not/exist', os.path.join(self.tempdir, self.START_PATH)) |
| self.assertEquals(found, None) |
| |
| |
| class SourceEnvironmentTest(cros_test_lib.TempDirTestCase): |
| """Test osutil's environmental variable related methods.""" |
| |
| ENV_WHITELIST = { |
| 'ENV1': 'monkeys like bananas', |
| 'ENV3': 'merci', |
| 'ENV6': '', |
| } |
| |
| ENV_OTHER = { |
| 'ENV2': 'bananas are yellow', |
| 'ENV4': 'de rien', |
| } |
| |
| ENV = """ |
| declare -x ENV1="monkeys like bananas" |
| declare -x ENV2="bananas are yellow" |
| declare -x ENV3="merci" |
| declare -x ENV4="de rien" |
| declare -x ENV6='' |
| declare -x ENVA=('a b c' 'd' 'e 1234 %') |
| """ |
| |
| ENV_MULTILINE = """ |
| declare -x ENVM="gentil |
| mechant" |
| """ |
| |
| def setUp(self): |
| self.env_file = os.path.join(self.tempdir, 'environment') |
| self.env_file_multiline = os.path.join(self.tempdir, 'multiline') |
| osutils.WriteFile(self.env_file, self.ENV) |
| osutils.WriteFile(self.env_file_multiline, self.ENV_MULTILINE) |
| |
| def testWhiteList(self): |
| env_dict = osutils.SourceEnvironment( |
| self.env_file, ('ENV1', 'ENV3', 'ENV5', 'ENV6')) |
| self.assertEquals(env_dict, self.ENV_WHITELIST) |
| |
| def testArrays(self): |
| env_dict = osutils.SourceEnvironment(self.env_file, ('ENVA',)) |
| self.assertEquals(env_dict, {'ENVA': 'a b c,d,e 1234 %'}) |
| |
| env_dict = osutils.SourceEnvironment(self.env_file, ('ENVA',), ifs=' ') |
| self.assertEquals(env_dict, {'ENVA': 'a b c d e 1234 %'}) |
| |
| env_dict = osutils.SourceEnvironment(self.env_file_multiline, ('ENVM',), |
| multiline=True) |
| self.assertEquals(env_dict, {'ENVM': 'gentil\nmechant'}) |
| |
| |
| class DeviceInfoTests(cros_build_lib_unittest.RunCommandTestCase): |
| """Tests methods retrieving information about devices.""" |
| |
| FULL_OUTPUT = """ |
| NAME="sda" RM="0" TYPE="disk" SIZE="128G" |
| NAME="sda1" RM="1" TYPE="part" SIZE="100G" |
| NAME="sda2" RM="1" TYPE="part" SIZE="28G" |
| NAME="sdc" RM="1" TYPE="disk" SIZE="7.4G" |
| NAME="sdc1" RM="1" TYPE="part" SIZE="1G" |
| NAME="sdc2" RM="1" TYPE="part" SIZE="6.4G" |
| """ |
| |
| PARTIAL_OUTPUT = """ |
| NAME="sdc" RM="1" TYPE="disk" SIZE="7.4G" |
| NAME="sdc1" RM="1" TYPE="part" SIZE="1G" |
| NAME="sdc2" RM="1" TYPE="part" SIZE="6.4G" |
| """ |
| |
| def testListBlockDevices(self): |
| """Tests that we can list all block devices correctly.""" |
| self.rc.AddCmdResult(partial_mock.Ignore(), output=self.FULL_OUTPUT) |
| devices = osutils.ListBlockDevices() |
| self.assertEqual(devices[0].NAME, 'sda') |
| self.assertEqual(devices[0].RM, '0') |
| self.assertEqual(devices[0].TYPE, 'disk') |
| self.assertEqual(devices[0].SIZE, '128G') |
| self.assertEqual(devices[3].NAME, 'sdc') |
| self.assertEqual(devices[3].RM, '1') |
| self.assertEqual(devices[3].TYPE, 'disk') |
| self.assertEqual(devices[3].SIZE, '7.4G') |
| |
| def testGetDeviceSize(self): |
| """Tests that we can get the size of a device.""" |
| self.rc.AddCmdResult(partial_mock.Ignore(), output=self.PARTIAL_OUTPUT) |
| self.assertEqual(osutils.GetDeviceSize('/dev/sdc'), '7.4G') |
| |
| |
| class MountImagePartitionTests(cros_test_lib.MockTestCase): |
| """Tests for MountImagePartition.""" |
| |
| def setUp(self): |
| self._gpt_table = { |
| 3: cros_build_lib.PartitionInfo(3, 1, 3, 2, 'fs', 'Label', 'flag') |
| } |
| |
| def testWithCacheOkay(self): |
| mount_dir = self.PatchObject(osutils, 'MountDir') |
| osutils.MountImagePartition('image_file', 3, 'destination', |
| self._gpt_table) |
| opts = ['loop', 'offset=1', 'sizelimit=2', 'ro'] |
| mount_dir.assert_called_with('image_file', 'destination', makedirs=True, |
| skip_mtab=False, sudo=True, mount_opts=opts) |
| |
| def testWithCacheFail(self): |
| self.assertRaises(ValueError, osutils.MountImagePartition, |
| 'image_file', 404, 'destination', self._gpt_table) |
| |
| def testWithoutCache(self): |
| self.PatchObject(cros_build_lib, 'GetImageDiskPartitionInfo', |
| return_value=self._gpt_table) |
| mount_dir = self.PatchObject(osutils, 'MountDir') |
| osutils.MountImagePartition('image_file', 3, 'destination') |
| opts = ['loop', 'offset=1', 'sizelimit=2', 'ro'] |
| mount_dir.assert_called_with( |
| 'image_file', 'destination', makedirs=True, skip_mtab=False, |
| sudo=True, mount_opts=opts |
| ) |
| |
| |
| class ChdirTests(cros_test_lib.MockTempDirTestCase): |
| """Tests for ChdirContext.""" |
| |
| def testChdir(self): |
| current_dir = os.getcwd() |
| self.assertNotEqual(self.tempdir, os.getcwd()) |
| with osutils.ChdirContext(self.tempdir): |
| self.assertEqual(self.tempdir, os.getcwd()) |
| self.assertEqual(current_dir, os.getcwd()) |
| |
| |
| class MountImageTests(cros_test_lib.MockTempDirTestCase): |
| """Tests for MountImageContext.""" |
| |
| def _testWithParts(self, parts, selectors, check_links=True): |
| self.PatchObject(cros_build_lib, 'GetImageDiskPartitionInfo', |
| return_value=parts) |
| mount_dir = self.PatchObject(osutils, 'MountDir') |
| unmount_dir = self.PatchObject(osutils, 'UmountDir') |
| rmdir = self.PatchObject(osutils, 'RmDir') |
| with osutils.MountImageContext('_ignored', self.tempdir, selectors): |
| for _, part in parts.items(): |
| mount_point = os.path.join(self.tempdir, 'dir-%d' % part.number) |
| mount_dir.assert_any_call( |
| '_ignored', mount_point, makedirs=True, skip_mtab=False, |
| sudo=True, |
| mount_opts=['loop', 'offset=0', 'sizelimit=0', 'ro'] |
| ) |
| if check_links: |
| link = os.path.join(self.tempdir, 'dir-%s' % part.name) |
| self.assertTrue(os.path.islink(link)) |
| self.assertEqual(os.path.basename(mount_point), |
| os.readlink(link)) |
| for _, part in parts.items(): |
| mount_point = os.path.join(self.tempdir, 'dir-%d' % part.number) |
| unmount_dir.assert_any_call(mount_point, cleanup=False) |
| rmdir.assert_any_call(mount_point, sudo=True) |
| if check_links: |
| link = os.path.join(self.tempdir, 'dir-%s' % part.name) |
| self.assertFalse(os.path.lexists(link)) |
| |
| def testWithPartitionNumber(self): |
| parts = { |
| 1: cros_build_lib.PartitionInfo(1, 0, 0, 0, '', 'my-stateful', ''), |
| 3: cros_build_lib.PartitionInfo(3, 0, 0, 0, '', 'my-root-a', ''), |
| } |
| self._testWithParts(parts, [1, 3]) |
| |
| def testWithPartitionLabel(self): |
| parts = { |
| 42: cros_build_lib.PartitionInfo(42, 0, 0, 0, '', 'label', ''), |
| } |
| self._testWithParts(parts, ['label']) |
| |
| def testInvalidPartSelector(self): |
| parts = { |
| 42: cros_build_lib.PartitionInfo(42, 0, 0, 0, '', 'label', ''), |
| } |
| self.assertRaises(ValueError, self._testWithParts, parts, ['label404']) |
| self.assertRaises(ValueError, self._testWithParts, parts, [404]) |
| |
| def testFailOnExistingMount(self): |
| parts = { |
| 42: cros_build_lib.PartitionInfo(42, 0, 0, 0, '', 'label', ''), |
| } |
| os.makedirs(os.path.join(self.tempdir, 'dir-42')) |
| self.assertRaises(ValueError, self._testWithParts, parts, [42]) |
| |
| def testExistingLinkNotCleanedUp(self): |
| parts = { |
| 42: cros_build_lib.PartitionInfo(42, 0, 0, 0, '', 'label', ''), |
| } |
| symlink = os.path.join(self.tempdir, 'dir-label') |
| os.symlink('/tmp', symlink) |
| self.assertEqual('/tmp', os.readlink(symlink)) |
| self._testWithParts(parts, [42], check_links=False) |
| self.assertEqual('/tmp', os.readlink(symlink)) |
| |
| |
| class MountOverlayTest(cros_test_lib.MockTempDirTestCase): |
| """Tests MountOverlayContext.""" |
| |
| def setUp(self): |
| self.upperdir = os.path.join(self.tempdir, 'first_level', 'upperdir') |
| self.lowerdir = os.path.join(self.tempdir, 'lowerdir') |
| self.mergeddir = os.path.join(self.tempdir, 'mergeddir') |
| |
| for path in [self.upperdir, self.lowerdir, self.mergeddir]: |
| osutils.Touch(path, makedirs=True) |
| |
| def testMountWriteUnmountRead(self): |
| mount_call = self.PatchObject(osutils, 'MountDir') |
| umount_call = self.PatchObject(osutils, 'UmountDir') |
| for cleanup in (True, False): |
| with osutils.MountOverlayContext(self.lowerdir, self.upperdir, |
| self.mergeddir, cleanup=cleanup): |
| mount_call.assert_any_call( |
| 'overlay', self.mergeddir, fs_type='overlay', makedirs=False, |
| mount_opts=('lowerdir=%s' % self.lowerdir, |
| 'upperdir=%s' % self.upperdir, |
| mock.ANY), |
| quiet=mock.ANY) |
| umount_call.assert_any_call(self.mergeddir, cleanup=cleanup) |
| |
| def testMountFailFallback(self): |
| """Test that mount failure with overlay fs_type fallsback to overlayfs.""" |
| def _FailOverlay(*_args, **kwargs): |
| if kwargs['fs_type'] == 'overlay': |
| raise cros_build_lib.RunCommandError( |
| 'Phony failure', |
| cros_build_lib.CommandResult(cmd='MounDir', returncode=32)) |
| |
| mount_call = self.PatchObject(osutils, 'MountDir') |
| mount_call.side_effect = _FailOverlay |
| umount_call = self.PatchObject(osutils, 'UmountDir') |
| for cleanup in (True, False): |
| with osutils.MountOverlayContext(self.lowerdir, self.upperdir, |
| self.mergeddir, cleanup=cleanup): |
| mount_call.assert_any_call( |
| 'overlay', self.mergeddir, fs_type='overlay', makedirs=False, |
| mount_opts=('lowerdir=%s' % self.lowerdir, |
| 'upperdir=%s' % self.upperdir, |
| mock.ANY), |
| quiet=mock.ANY) |
| mount_call.assert_any_call( |
| 'overlayfs', self.mergeddir, fs_type='overlayfs', makedirs=False, |
| mount_opts=('lowerdir=%s' % self.lowerdir, |
| 'upperdir=%s' % self.upperdir), |
| quiet=mock.ANY) |
| umount_call.assert_any_call(self.mergeddir, cleanup=cleanup) |
| |
| def testNoValidWorkdirFallback(self): |
| """Test that we fallback to overlayfs when no valid workdir is found..""" |
| def _FailFileSystemCheck(_path1, _path2): |
| return False |
| |
| check_filesystem = self.PatchObject(osutils, '_SameFileSystem') |
| check_filesystem.side_effect = _FailFileSystemCheck |
| mount_call = self.PatchObject(osutils, 'MountDir') |
| umount_call = self.PatchObject(osutils, 'UmountDir') |
| |
| for cleanup in (True, False): |
| with osutils.MountOverlayContext(self.lowerdir, self.upperdir, |
| self.mergeddir, cleanup=cleanup): |
| mount_call.assert_any_call( |
| 'overlayfs', self.mergeddir, fs_type='overlayfs', makedirs=False, |
| mount_opts=('lowerdir=%s' % self.lowerdir, |
| 'upperdir=%s' % self.upperdir), |
| quiet=mock.ANY) |
| umount_call.assert_any_call(self.mergeddir, cleanup=cleanup) |
| |
| |
| class IterateMountPointsTests(cros_test_lib.TempDirTestCase): |
| """Test for IterateMountPoints function.""" |
| |
| def setUp(self): |
| self.proc_mount = os.path.join(self.tempdir, 'mounts') |
| osutils.WriteFile( |
| self.proc_mount, |
| r'''/dev/loop0 /mnt/dir_8 ext4 rw,relatime,data=ordered 0 0 |
| /dev/loop2 /mnt/dir_1 ext4 rw,relatime,data=ordered 0 0 |
| /dev/loop1 /mnt/dir_12 vfat rw 0 0 |
| /dev/loop4 /mnt/dir_3 ext4 ro,relatime 0 0 |
| weird\040system /mnt/weirdo unknown ro 0 0 |
| tmpfs /mnt/spaced\040dir tmpfs ro 0 0 |
| tmpfs /mnt/\134 tmpfs ro 0 0 |
| ''' |
| ) |
| |
| def testOkay(self): |
| r = list(osutils.IterateMountPoints(self.proc_mount)) |
| self.assertEqual(len(r), 7) |
| self.assertEqual(r[0].source, '/dev/loop0') |
| self.assertEqual(r[1].destination, '/mnt/dir_1') |
| self.assertEqual(r[2].filesystem, 'vfat') |
| self.assertEqual(r[3].options, 'ro,relatime') |
| |
| def testEscape(self): |
| r = list(osutils.IterateMountPoints(self.proc_mount)) |
| self.assertEqual(r[4].source, 'weird system') |
| self.assertEqual(r[5].destination, '/mnt/spaced dir') |
| self.assertEqual(r[6].destination, '/mnt/\\') |
| |
| |
| class ResolveSymlinkTest(cros_test_lib.TestCase): |
| """Tests for ResolveSymlink.""" |
| |
| def testRelativeLink(self): |
| os.symlink('target', 'link') |
| self.assertEqual(osutils.ResolveSymlink('link'), 'target') |
| os.unlink('link') |
| |
| def testAbsoluteLink(self): |
| os.symlink('/target', 'link') |
| self.assertEqual(osutils.ResolveSymlink('link'), '/target') |
| self.assertEqual(osutils.ResolveSymlink('link', '/root'), '/root/target') |
| os.unlink('link') |
| |
| def testRecursion(self): |
| os.symlink('target', 'link1') |
| os.symlink('link1', 'link2') |
| self.assertEqual(osutils.ResolveSymlink('link2'), 'target') |
| os.unlink('link2') |
| os.unlink('link1') |
| |
| def testRecursionWithAbsoluteLink(self): |
| os.symlink('target', 'link1') |
| os.symlink('/link1', 'link2') |
| self.assertEqual(osutils.ResolveSymlink('link2', '.'), './target') |
| os.unlink('link2') |
| os.unlink('link1') |
| |
| |
| class IsInsideVmTest(cros_test_lib.MockTempDirTestCase): |
| """Test osutils.IsInsideVmTest function.""" |
| |
| def setUp(self): |
| self.model_file = os.path.join(self.tempdir, 'sda', 'device', 'model') |
| osutils.SafeMakedirs(os.path.dirname(self.model_file)) |
| self.mock_glob = self.PatchObject( |
| glob, 'glob', return_value=[self.model_file]) |
| |
| def testIsInsideVm(self): |
| osutils.WriteFile(self.model_file, "VBOX") |
| self.assertTrue(osutils.IsInsideVm()) |
| self.assertEqual(self.mock_glob.call_args[0][0], |
| "/sys/block/*/device/model") |
| |
| osutils.WriteFile(self.model_file, "VMware") |
| self.assertTrue(osutils.IsInsideVm()) |
| |
| def testIsNotInsideVm(self): |
| osutils.WriteFile(self.model_file, "ST1000DM000-1CH1") |
| self.assertFalse(osutils.IsInsideVm()) |
