272 lines
9.0 KiB
Python
272 lines
9.0 KiB
Python
import os
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import stat
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from mocker import MockerTestCase
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from unittest import TestCase
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from cloudinit import importer
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from cloudinit import util
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class FakeSelinux(object):
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def __init__(self, match_what):
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self.match_what = match_what
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self.restored = []
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def matchpathcon(self, path, mode): # pylint: disable=W0613
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if path == self.match_what:
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return
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else:
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raise OSError("No match!")
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def is_selinux_enabled(self):
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return True
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def restorecon(self, path, recursive): # pylint: disable=W0613
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self.restored.append(path)
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class TestMergeDict(MockerTestCase):
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def test_simple_merge(self):
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"""Test simple non-conflict merge."""
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source = {"key1": "value1"}
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candidate = {"key2": "value2"}
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result = util.mergedict(source, candidate)
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self.assertEqual({"key1": "value1", "key2": "value2"}, result)
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def test_nested_merge(self):
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"""Test nested merge."""
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source = {"key1": {"key1.1": "value1.1"}}
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candidate = {"key1": {"key1.2": "value1.2"}}
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result = util.mergedict(source, candidate)
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self.assertEqual(
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{"key1": {"key1.1": "value1.1", "key1.2": "value1.2"}}, result)
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def test_merge_does_not_override(self):
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"""Test that candidate doesn't override source."""
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source = {"key1": "value1", "key2": "value2"}
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candidate = {"key1": "value2", "key2": "NEW VALUE"}
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result = util.mergedict(source, candidate)
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self.assertEqual(source, result)
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def test_empty_candidate(self):
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"""Test empty candidate doesn't change source."""
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source = {"key": "value"}
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candidate = {}
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result = util.mergedict(source, candidate)
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self.assertEqual(source, result)
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def test_empty_source(self):
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"""Test empty source is replaced by candidate."""
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source = {}
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candidate = {"key": "value"}
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result = util.mergedict(source, candidate)
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self.assertEqual(candidate, result)
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def test_non_dict_candidate(self):
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"""Test non-dict candidate is discarded."""
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source = {"key": "value"}
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candidate = "not a dict"
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result = util.mergedict(source, candidate)
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self.assertEqual(source, result)
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def test_non_dict_source(self):
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"""Test non-dict source is not modified with a dict candidate."""
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source = "not a dict"
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candidate = {"key": "value"}
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result = util.mergedict(source, candidate)
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self.assertEqual(source, result)
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def test_neither_dict(self):
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"""Test if neither candidate or source is dict source wins."""
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source = "source"
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candidate = "candidate"
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result = util.mergedict(source, candidate)
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self.assertEqual(source, result)
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class TestGetCfgOptionListOrStr(TestCase):
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def test_not_found_no_default(self):
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"""None is returned if key is not found and no default given."""
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config = {}
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result = util.get_cfg_option_list(config, "key")
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self.assertEqual(None, result)
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def test_not_found_with_default(self):
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"""Default is returned if key is not found."""
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config = {}
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result = util.get_cfg_option_list(config, "key", default=["DEFAULT"])
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self.assertEqual(["DEFAULT"], result)
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def test_found_with_default(self):
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"""Default is not returned if key is found."""
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config = {"key": ["value1"]}
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result = util.get_cfg_option_list(config, "key", default=["DEFAULT"])
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self.assertEqual(["value1"], result)
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def test_found_convert_to_list(self):
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"""Single string is converted to one element list."""
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config = {"key": "value1"}
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result = util.get_cfg_option_list(config, "key")
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self.assertEqual(["value1"], result)
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def test_value_is_none(self):
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"""If value is None empty list is returned."""
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config = {"key": None}
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result = util.get_cfg_option_list(config, "key")
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self.assertEqual([], result)
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class TestWriteFile(MockerTestCase):
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def setUp(self):
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super(TestWriteFile, self).setUp()
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self.tmp = self.makeDir(prefix="unittest_")
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def test_basic_usage(self):
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"""Verify basic usage with default args."""
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path = os.path.join(self.tmp, "NewFile.txt")
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contents = "Hey there"
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util.write_file(path, contents)
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self.assertTrue(os.path.exists(path))
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self.assertTrue(os.path.isfile(path))
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with open(path) as f:
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create_contents = f.read()
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self.assertEqual(contents, create_contents)
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file_stat = os.stat(path)
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self.assertEqual(0644, stat.S_IMODE(file_stat.st_mode))
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def test_dir_is_created_if_required(self):
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"""Verifiy that directories are created is required."""
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dirname = os.path.join(self.tmp, "subdir")
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path = os.path.join(dirname, "NewFile.txt")
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contents = "Hey there"
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util.write_file(path, contents)
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self.assertTrue(os.path.isdir(dirname))
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self.assertTrue(os.path.isfile(path))
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def test_custom_mode(self):
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"""Verify custom mode works properly."""
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path = os.path.join(self.tmp, "NewFile.txt")
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contents = "Hey there"
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util.write_file(path, contents, mode=0666)
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self.assertTrue(os.path.exists(path))
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self.assertTrue(os.path.isfile(path))
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file_stat = os.stat(path)
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self.assertEqual(0666, stat.S_IMODE(file_stat.st_mode))
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def test_custom_omode(self):
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"""Verify custom omode works properly."""
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path = os.path.join(self.tmp, "NewFile.txt")
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contents = "Hey there"
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# Create file first with basic content
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with open(path, "wb") as f:
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f.write("LINE1\n")
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util.write_file(path, contents, omode="a")
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self.assertTrue(os.path.exists(path))
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self.assertTrue(os.path.isfile(path))
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with open(path) as f:
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create_contents = f.read()
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self.assertEqual("LINE1\nHey there", create_contents)
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def test_restorecon_if_possible_is_called(self):
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"""Make sure the selinux guard is called correctly."""
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import_mock = self.mocker.replace(importer.import_module,
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passthrough=False)
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import_mock('selinux')
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fake_se = FakeSelinux('/etc/hosts')
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self.mocker.result(fake_se)
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self.mocker.replay()
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with util.SeLinuxGuard("/etc/hosts") as is_on:
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self.assertTrue(is_on)
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self.assertEqual(1, len(fake_se.restored))
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self.assertEqual('/etc/hosts', fake_se.restored[0])
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class TestDeleteDirContents(MockerTestCase):
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def setUp(self):
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super(TestDeleteDirContents, self).setUp()
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self.tmp = self.makeDir(prefix="unittest_")
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def assertDirEmpty(self, dirname):
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self.assertEqual([], os.listdir(dirname))
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def test_does_not_delete_dir(self):
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"""Ensure directory itself is not deleted."""
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util.delete_dir_contents(self.tmp)
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self.assertTrue(os.path.isdir(self.tmp))
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self.assertDirEmpty(self.tmp)
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def test_deletes_files(self):
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"""Single file should be deleted."""
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with open(os.path.join(self.tmp, "new_file.txt"), "wb") as f:
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f.write("DELETE ME")
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util.delete_dir_contents(self.tmp)
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self.assertDirEmpty(self.tmp)
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def test_deletes_empty_dirs(self):
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"""Empty directories should be deleted."""
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os.mkdir(os.path.join(self.tmp, "new_dir"))
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util.delete_dir_contents(self.tmp)
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self.assertDirEmpty(self.tmp)
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def test_deletes_nested_dirs(self):
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"""Nested directories should be deleted."""
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os.mkdir(os.path.join(self.tmp, "new_dir"))
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os.mkdir(os.path.join(self.tmp, "new_dir", "new_subdir"))
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util.delete_dir_contents(self.tmp)
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self.assertDirEmpty(self.tmp)
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def test_deletes_non_empty_dirs(self):
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"""Non-empty directories should be deleted."""
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os.mkdir(os.path.join(self.tmp, "new_dir"))
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f_name = os.path.join(self.tmp, "new_dir", "new_file.txt")
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with open(f_name, "wb") as f:
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f.write("DELETE ME")
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util.delete_dir_contents(self.tmp)
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self.assertDirEmpty(self.tmp)
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def test_deletes_symlinks(self):
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"""Symlinks should be deleted."""
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file_name = os.path.join(self.tmp, "new_file.txt")
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link_name = os.path.join(self.tmp, "new_file_link.txt")
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with open(file_name, "wb") as f:
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f.write("DELETE ME")
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os.symlink(file_name, link_name)
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util.delete_dir_contents(self.tmp)
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self.assertDirEmpty(self.tmp)
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class TestKeyValStrings(TestCase):
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def test_keyval_str_to_dict(self):
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expected = {'1': 'one', '2': 'one+one', 'ro': True}
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cmdline = "1=one ro 2=one+one"
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self.assertEqual(expected, util.keyval_str_to_dict(cmdline))
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class TestGetCmdline(TestCase):
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def test_cmdline_reads_debug_env(self):
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os.environ['DEBUG_PROC_CMDLINE'] = 'abcd 123'
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self.assertEqual(os.environ['DEBUG_PROC_CMDLINE'], util.get_cmdline())
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# vi: ts=4 expandtab
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