Hello,

Am Sonntag, 23. November 2014 schrieb Christian Boltz:
> Am Samstag, 22. November 2014 schrieb Christian Boltz:
> > The updated patch (v2) is attached.
> 
> Here's v3 ;-)

And here's v4 :-)

Changes since v3:
- update various tests after changing capability to set()
- use obj.set_param in test_space_cap()
- add test_equal()


Regards,

Christian Boltz
-- 
> [...] is currently down due to a failure in the NAS system.
> [...]
> your NAS (network attached storage)
Oh. I thought it stood for Networked Adrian Schröter :D
[> Adrian Schröter and Jean Delvare in opensuse-buildservice]
=== added file 'utils/test/test-capability.py'
--- utils/test/test-capability.py	1970-01-01 00:00:00 +0000
+++ utils/test/test-capability.py	2014-11-27 19:57:17 +0000
@@ -0,0 +1,806 @@
+#!/usr/bin/env python
+# ----------------------------------------------------------------------
+#    Copyright (C) 2014 Christian Boltz <[email protected]>
+#
+#    This program is free software; you can redistribute it and/or
+#    modify it under the terms of version 2 of the GNU General Public
+#    License as published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+# ----------------------------------------------------------------------
+
+import unittest
+
+from apparmor.rule.capability import CapabilityRule, CapabilityRuleset
+from apparmor.common import AppArmorException, AppArmorBug, hasher
+from apparmor.logparser import ReadLog
+
+import re
+
+# --- tests for single CapabilityRule --- #
+
+class CapabilityTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+    def _compare_obj_with_rawrule(self, rawrule, expected):
+
+        obj = CapabilityRule()
+        obj.set_raw(rawrule)
+
+        self.assertEqual(rawrule.strip(), obj.rawrule)
+
+        self._compare_obj(obj, expected)
+
+    def _compare_obj(self, obj, expected):
+        self.assertEqual(expected['allow_keyword'], obj.allow_keyword)
+        self.assertEqual(expected['audit'], obj.audit)
+        self.assertEqual(expected['capability'], obj.capability)
+        self.assertEqual(expected['all_caps'], obj.all_caps)
+        self.assertEqual(expected['deny'], obj.deny)
+        self.assertEqual(expected['inlinecomment'], obj.inlinecomment)
+
+    def test_cap_allow_all(self):
+        self._compare_obj_with_rawrule("capability,", {
+            'allow_keyword':    False,
+            'deny':             False,
+            'audit':            False,
+            'capability':       set(),
+            'all_caps':         True,
+            'inlinecomment':    "",
+        })
+
+    def test_cap_allow_sys_admin(self):
+        self._compare_obj_with_rawrule("capability sys_admin,", {
+            'allow_keyword':    False,
+            'deny':             False,
+            'audit':            False,
+            'capability':       {'sys_admin'},
+            'all_caps':         False,
+            'inlinecomment':    "",
+        })
+
+    def test_cap_deny_sys_admin(self):
+        self._compare_obj_with_rawrule("     deny capability sys_admin,  # some comment", {
+            'allow_keyword':    False,
+            'deny':             True,
+            'audit':            False,
+            'capability':       {'sys_admin'},
+            'all_caps':         False,
+            'inlinecomment':    " # some comment",
+        })
+
+    def test_cap_multi(self):
+        self._compare_obj_with_rawrule("capability sys_admin dac_override,", {
+            'allow_keyword':    False,
+            'deny':             False,
+            'audit':            False,
+            'capability':       {'sys_admin', 'dac_override'},
+            'all_caps':         False,
+            'inlinecomment':    "",
+        })
+
+    # Template for test_cap_* functions
+    #    def test_cap_(self):
+    #        self._compare_obj_with_rawrule("capability,", {
+    #            'allow_keyword':    False,
+    #            'deny':             False,
+    #            'audit':            False,
+    #            'capability':       set(), # (or {'foo'} if not empty)
+    #            'all_caps':         False,
+    #            'inlinecomment':    "",
+    #        })
+
+    def test_cap_from_log(self):
+        parser = ReadLog('', '', '', '', '')
+        event = 'type=AVC msg=audit(1415403814.628:662): apparmor="ALLOWED" operation="capable" profile="/bin/ping" pid=15454 comm="ping" capability=13  capname="net_raw"'
+
+        parsed_event = parser.parse_event(event)
+
+        self.assertEqual(parsed_event, {
+            'request_mask': set(),
+            'denied_mask': set(),
+            'magic_token': 0,
+            'parent': 0,
+            'profile': '/bin/ping',
+            'operation': 'capable',
+            'resource': None,
+            'info': None,
+            'aamode': 'PERMITTING',
+            'time': 1415403814,
+            'active_hat': None,
+            'pid': 15454,
+            'task': 0,
+            'attr': None,
+            'name2': None,
+            'name': 'net_raw'
+        })
+
+        obj = CapabilityRule()
+        obj.set_log(parsed_event)
+
+        self._compare_obj(obj, {
+            'allow_keyword':    False,
+            'deny':             False,
+            'audit':            False,
+            'capability':       {'net_raw'},
+            'all_caps':         False,
+            'inlinecomment':    "",
+        })
+
+        self.assertEqual(obj.get_raw(1), '  capability net_raw,')
+
+    def test_cap_from_invalid_log(self):
+        parser = ReadLog('', '', '', '', '')
+        # invalid log entry, name= should contain the capability name
+        event = 'type=AVC msg=audit(1415403814.628:662): apparmor="ALLOWED" operation="capable" profile="/bin/ping" pid=15454 comm="ping" capability=13  capname=""'
+
+        parsed_event = parser.parse_event(event)
+
+        obj = CapabilityRule()
+
+        with self.assertRaises(AppArmorBug):
+            obj.set_log(parsed_event)
+
+        with self.assertRaises(AppArmorBug):
+            obj.get_raw(1)
+
+    def test_cap_from_non_cap_log(self):
+        parser = ReadLog('', '', '', '', '')
+        # log entry for different rule type
+        event = 'type=AVC msg=audit(1415403814.973:667): apparmor="ALLOWED" operation="setsockopt" profile="/home/sys-tmp/ping" pid=15454 comm="ping" lport=1 family="inet" sock_type="raw" protocol=1'
+
+        parsed_event = parser.parse_event(event)
+
+        obj = CapabilityRule()
+
+        with self.assertRaises(AppArmorBug):
+            obj.set_log(parsed_event)
+
+        with self.assertRaises(AppArmorBug):
+            obj.get_raw(1)
+
+    def test_cap_from_param(self):
+        obj = CapabilityRule()
+        obj.set_param('chown')
+
+        self._compare_obj(obj, {
+            'allow_keyword':    False,
+            'deny':             False,
+            'audit':            False,
+            'capability':       {'chown'},
+            'all_caps':         False,
+            'inlinecomment':    "",
+        })
+
+    def test_cap_from_param_2(self):
+        obj = CapabilityRule()
+        obj.set_param('chown', audit=True, deny=True)
+
+        self._compare_obj(obj, {
+            'allow_keyword':    False,
+            'deny':             True,
+            'audit':            True,
+            'capability':       {'chown'},
+            'all_caps':         False,
+            'inlinecomment':    "",
+        })
+
+
+class InvalidCapabilityTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+    def _check_invalid_rawrule(self, rawrule):
+        obj = CapabilityRule()
+        with self.assertRaises(AppArmorException):
+            obj.set_raw(rawrule)
+
+    def test_invalid_cap_missing_comma(self):
+        self._check_invalid_rawrule('capability')  # missing comma
+
+    def test_invalid_cap_non_CapabilityRule(self):
+        self._check_invalid_rawrule('network,')  # not a capability rule
+
+    def test_empty_cap_list(self):
+        obj = CapabilityRule()
+        # no capability set, and ALL not set
+        with self.assertRaises(AppArmorBug):
+            obj.get_clean(1)
+
+    def test_space_cap(self):
+        obj = CapabilityRule()
+        obj.set_param('  ')  # the whitespace capability ;-)
+        with self.assertRaises(AppArmorBug):
+            obj.get_clean(1)
+
+    def test_parse_audit_allow_invalid(self):
+        obj = CapabilityRule()
+
+        regex = re.compile('^\s*(?P<audit>audit\s+)?(?P<allow>allow\s+|deny\s+|invalid\s+)?')
+        matches = regex.search('audit invalid ')
+
+        with self.assertRaises(AppArmorBug):
+            obj.parse_audit_allow(matches)
+
+
+class WriteCapabilityTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+    def _check_write_rule(self, rawrule, cleanrule):
+        obj = CapabilityRule()
+        obj.set_raw(rawrule)
+        clean = obj.get_clean(0)
+        raw = obj.get_raw(0)
+
+        self.assertEqual(cleanrule.strip(), clean, 'unexpected clean rule')
+        self.assertEqual(rawrule.strip(), raw, 'unexpected raw rule')
+
+    def test_write_all(self):
+        self._check_write_rule('     capability      ,    # foo        ', 'capability, # foo')
+
+    def test_write_sys_admin(self):
+        self._check_write_rule('    audit     capability sys_admin,', 'audit capability sys_admin,')
+
+    def test_write_sys_multi(self):
+        self._check_write_rule('   deny capability      sys_admin      audit_write,# foo bar', 'deny capability audit_write sys_admin, # foo bar')
+
+    def test_write_manually(self):
+        obj = CapabilityRule()
+        obj.capability = {'ptrace', 'audit_write'}
+        obj.allow_keyword = True
+
+        expected = '    allow capability audit_write ptrace,'
+
+        self.assertEqual(expected, obj.get_clean(2), 'unexpected clean rule')
+        self.assertEqual(expected, obj.get_raw(2), 'unexpected raw rule')
+
+class CapabilityCoveredTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+    def _init_obj_with_rawrule(self, rawrule):
+        obj = CapabilityRule()
+        obj.set_raw(rawrule)
+        return obj
+
+    def _is_covered(self, obj, rule_to_test):
+        return obj.is_covered(self._init_obj_with_rawrule(rule_to_test))
+
+    def _is_covered_exact(self, obj, rule_to_test):
+        return obj.is_covered(self._init_obj_with_rawrule(rule_to_test), True, True)
+
+    def _is_equal(self, obj, rule_to_test, strict):
+        return obj.is_equal(self._init_obj_with_rawrule(rule_to_test), strict)
+
+    def test_covered_single(self):
+        obj = self._init_obj_with_rawrule('capability sys_admin,')
+
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit capability sys_admin,'))
+        self.assertFalse(self._is_covered(obj, 'audit capability,'))
+        self.assertFalse(self._is_covered(obj, 'capability chown,'))
+        self.assertFalse(self._is_covered(obj, 'capability,'))
+
+    def test_covered_audit(self):
+        obj = self._init_obj_with_rawrule('audit capability sys_admin,')
+
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin,'))
+        self.assertTrue(self._is_covered(obj, 'audit capability sys_admin,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit capability,'))
+        self.assertFalse(self._is_covered(obj, 'capability chown,'))
+        self.assertFalse(self._is_covered(obj, 'capability,'))
+
+    def test_covered_check_audit(self):
+        obj = self._init_obj_with_rawrule('audit capability sys_admin,')
+
+        self.assertFalse(self._is_covered_exact(obj, 'capability sys_admin,'))
+        self.assertTrue(self._is_covered_exact(obj, 'audit capability sys_admin,'))
+
+        self.assertFalse(self._is_covered_exact(obj, 'audit capability,'))
+        self.assertFalse(self._is_covered_exact(obj, 'capability chown,'))
+        self.assertFalse(self._is_covered_exact(obj, 'capability,'))
+
+    def test_equal(self):
+        obj = self._init_obj_with_rawrule('capability sys_admin,')
+
+        self.assertTrue(self._is_equal(obj, 'capability sys_admin,', True))
+        self.assertFalse(self._is_equal(obj, 'allow capability sys_admin,', True))
+        self.assertFalse(self._is_equal(obj, 'allow capability sys_admin,', True))
+        self.assertFalse(self._is_equal(obj, 'audit capability sys_admin,', True))
+
+        self.assertTrue(self._is_equal(obj, 'capability sys_admin,', False))
+        self.assertTrue(self._is_equal(obj, 'allow capability sys_admin,', False))
+        self.assertFalse(self._is_equal(obj, 'audit capability sys_admin,', False))
+
+    def test_covered_multi(self):
+        obj = self._init_obj_with_rawrule('capability audit_write sys_admin,')
+
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin,'))
+        self.assertTrue(self._is_covered(obj, 'capability audit_write,'))
+        self.assertTrue(self._is_covered(obj, 'capability audit_write sys_admin,'))
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin audit_write,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit capability,'))
+        self.assertFalse(self._is_covered(obj, 'capability chown,'))
+        self.assertFalse(self._is_covered(obj, 'capability,'))
+
+    def test_covered_all(self):
+        obj = self._init_obj_with_rawrule('capability,')
+
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin,'))
+        self.assertTrue(self._is_covered(obj, 'capability audit_write,'))
+        self.assertTrue(self._is_covered(obj, 'capability audit_write sys_admin,'))
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin audit_write,'))
+        self.assertTrue(self._is_covered(obj, 'capability,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit capability,'))
+
+    def test_covered_deny(self):
+        obj = self._init_obj_with_rawrule('capability sys_admin,')
+
+        self.assertTrue(self._is_covered(obj, 'capability sys_admin,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit deny capability sys_admin,'))
+        self.assertFalse(self._is_covered(obj, 'deny capability sys_admin,'))
+        self.assertFalse(self._is_covered(obj, 'capability chown,'))
+        self.assertFalse(self._is_covered(obj, 'capability,'))
+
+    def test_covered_deny_2(self):
+        obj = self._init_obj_with_rawrule('deny capability sys_admin,')
+
+        self.assertTrue(self._is_covered(obj, 'deny capability sys_admin,'))
+
+        self.assertFalse(self._is_covered(obj, 'audit deny capability sys_admin,'))
+        self.assertFalse(self._is_covered(obj, 'capability sys_admin,'))
+        self.assertFalse(self._is_covered(obj, 'deny capability chown,'))
+        self.assertFalse(self._is_covered(obj, 'deny capability,'))
+
+    def test_invalid_is_obj_covered(self):
+        obj = self._init_obj_with_rawrule('capability sys_admin,')
+
+        testobj = CapabilityRule()  # no capability set
+
+        with self.assertRaises(AppArmorBug):
+            obj.is_covered(testobj)
+
+    def test_empty_init(self):
+        # add to internal set instead of using .set_* (which overwrites the internal set) to make sure obj and obj2 use separate storage
+        obj = CapabilityRule()
+        obj.capability.add('sys_admin')
+
+        obj2 = CapabilityRule()
+        obj2.capability.add('ptrace')
+
+        self.assertFalse(self._is_covered(obj2, 'capability sys_admin,'))
+        self.assertTrue(self._is_covered(obj2, 'capability ptrace,'))
+
+# --- tests for CapabilityRuleset --- #
+
+class CapabilityRulesTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+    def test_empty_ruleset(self):
+        ruleset = CapabilityRuleset()
+        ruleset_2 = CapabilityRuleset()
+        self.assertEqual([], ruleset.get_raw(2))
+        self.assertEqual([], ruleset.get_clean(2))
+        self.assertEqual([], ruleset_2.get_raw(2))
+        self.assertEqual([], ruleset_2.get_clean(2))
+
+    def test_ruleset_1(self):
+        ruleset = CapabilityRuleset()
+        rules = [
+            'capability sys_admin,',
+            'capability chown,',
+        ]
+
+        expected_raw = [
+            'capability sys_admin,',
+            'capability chown,',
+            '',
+        ]
+
+        expected_clean = [
+            'capability chown,',
+            'capability sys_admin,',
+            '',
+        ]
+
+        for rule in rules:
+            ruleset.add_raw(rule)
+
+        self.assertEqual(expected_raw, ruleset.get_raw(0))
+        self.assertEqual(expected_clean, ruleset.get_clean(0))
+
+    def test_ruleset_2(self):
+        ruleset = CapabilityRuleset()
+        rules = [
+            'capability chown,',
+            'allow capability sys_admin,',
+            'deny capability chgrp, # example comment',
+        ]
+
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  capability chown,',
+            '',
+        ]
+
+        for rule in rules:
+            ruleset.add_raw(rule)
+
+        self.assertEqual(expected_raw, ruleset.get_raw(1))
+        self.assertEqual(expected_clean, ruleset.get_clean(1))
+
+    def test_ruleset_add_obj(self):
+        rule_obj = CapabilityRule()
+        rule_obj.set_raw('capability chgrp, # example comment')
+
+        ruleset = CapabilityRuleset()
+        ruleset.add_obj(rule_obj)
+
+        expected_raw = [
+            '  capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = expected_raw
+
+        self.assertEqual(expected_raw, ruleset.get_raw(1))
+        self.assertEqual(expected_clean, ruleset.get_clean(1))
+
+
+class CapabilityRulesCoveredTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+        self.ruleset = CapabilityRuleset()
+        rules = [
+            'capability chown,',
+            'capability setuid setgid,',
+            'allow capability sys_admin,',
+            'audit capability kill,',
+            'deny capability chgrp, # example comment',
+        ]
+
+        for rule in rules:
+            self.ruleset.add_raw(rule)
+
+    def test_ruleset_is_raw_covered_1(self):
+        self.assertTrue(self.ruleset.is_raw_covered('capability chown,'))
+    def test_ruleset_is_raw_covered_2(self):
+        self.assertTrue(self.ruleset.is_raw_covered('capability sys_admin,'))
+    def test_ruleset_is_raw_covered_3(self):
+        self.assertTrue(self.ruleset.is_raw_covered('allow capability sys_admin,'))
+    def test_ruleset_is_raw_covered_4(self):
+        self.assertTrue(self.ruleset.is_raw_covered('capability setuid,'))
+    def test_ruleset_is_raw_covered_5(self):
+        self.assertTrue(self.ruleset.is_raw_covered('allow capability setgid,'))
+    def test_ruleset_is_raw_covered_6(self):
+        self.assertTrue(self.ruleset.is_raw_covered('capability setgid setuid,'))
+    def test_ruleset_is_raw_covered_7(self):
+        pass  # self.assertTrue(self.ruleset.is_raw_covered('capability sys_admin chown,'))  # fails because it is split over two rule objects internally
+    def test_ruleset_is_raw_covered_8(self):
+        self.assertTrue(self.ruleset.is_raw_covered('capability kill,'))
+
+    def test_ruleset_is_raw_covered_9(self):
+        self.assertFalse(self.ruleset.is_raw_covered('deny capability chown,'))
+    def test_ruleset_is_raw_covered_10(self):
+        self.assertFalse(self.ruleset.is_raw_covered('deny capability sys_admin,'))
+    def test_ruleset_is_raw_covered_11(self):
+        self.assertFalse(self.ruleset.is_raw_covered('deny capability sys_admin chown,'))
+    def test_ruleset_is_raw_covered_12(self):
+        self.assertFalse(self.ruleset.is_raw_covered('deny capability setgid,'))
+    def test_ruleset_is_raw_covered_13(self):
+        self.assertFalse(self.ruleset.is_raw_covered('deny capability kill,'))
+
+    def test_ruleset_is_raw_covered_14(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit capability chown,'))
+    def test_ruleset_is_raw_covered_15(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit capability sys_admin,'))
+    def test_ruleset_is_raw_covered_16(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit capability sys_admin chown,'))
+    def test_ruleset_is_raw_covered_17(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit capability setgid,'))
+    def test_ruleset_is_raw_covered_18(self):
+        self.assertTrue(self.ruleset.is_raw_covered('audit capability kill,'))
+
+    def test_ruleset_is_raw_covered_19(self):
+        self.assertTrue(self.ruleset.is_raw_covered('deny capability chgrp,'))
+    def test_ruleset_is_raw_covered_20(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit deny capability chgrp,'))
+    def test_ruleset_is_raw_covered_21(self):
+        self.assertFalse(self.ruleset.is_raw_covered('audit capability chgrp,'))
+
+    def _test_log_covered(self, expected, capability):
+        event_base = 'type=AVC msg=audit(1415403814.628:662): apparmor="ALLOWED" operation="capable" profile="/bin/ping" pid=15454 comm="ping" capability=13  capname="%s"'
+
+        parser = ReadLog('', '', '', '', '')
+        self.assertEqual(expected, self.ruleset.is_log_covered(parser.parse_event(event_base%capability)))
+
+    def test_ruleset_is_log_covered_1(self):
+        self._test_log_covered(False, 'net_raw')
+    def test_ruleset_is_log_covered_2(self):
+        self._test_log_covered(True, 'chown')
+    def test_ruleset_is_log_covered_3(self):
+        self._test_log_covered(True, 'sys_admin')
+    def test_ruleset_is_log_covered_4(self):
+        self._test_log_covered(True, 'kill')
+    def test_ruleset_is_log_covered_5(self):
+        self._test_log_covered(False, 'chgrp')
+    def test_ruleset_is_log_covered_6(self):
+        event_base = 'type=AVC msg=audit(1415403814.628:662): apparmor="ALLOWED" operation="capable" profile="/bin/ping" pid=15454 comm="ping" capability=13  capname="%s"'
+
+        parser = ReadLog('', '', '', '', '')
+        self.assertEqual(True, self.ruleset.is_log_covered(parser.parse_event(event_base%'chgrp'), False))  # ignores allow/deny
+
+class CapabilityGlobTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+        self.ruleset = CapabilityRuleset()
+
+    def test_glob(self):
+        self.assertEqual(self.ruleset.get_glob('capability net_raw,'), 'capability,')
+
+    def test_glob_ext(self):
+        with self.assertRaises(AppArmorBug):
+            self.ruleset.get_glob_ext('capability net_raw,')
+
+class CapabilityDeleteTest(unittest.TestCase):
+    def setUp(self):
+        self.maxDiff = None
+
+        self.ruleset = CapabilityRuleset()
+        rules = [
+            'capability chown,',
+            'allow capability sys_admin,',
+            'deny capability chgrp, # example comment',
+        ]
+
+        for rule in rules:
+            self.ruleset.add_raw(rule)
+
+    def test_delete_raw(self):
+        expected_raw = [
+            '  capability chown,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  capability chown,',
+            '',
+        ]
+
+        self.ruleset.delete_raw('capability sys_admin,')
+
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_raw_with_allcaps(self):
+        expected_raw = [
+            '  capability chown,',
+            '  deny capability chgrp, # example comment',
+            '  capability,',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  capability chown,',
+            '  capability,',
+            '',
+        ]
+
+        self.ruleset.add_raw('capability,')
+        self.ruleset.delete_raw('capability sys_admin,')
+
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_raw_with_multi(self):
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  capability chown,',
+            '',
+        ]
+
+        self.ruleset.add_raw('capability audit_read audit_write,')
+        self.ruleset.delete_raw('capability audit_read audit_write,')
+
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_raw_with_multi_2(self):
+        self.ruleset.add_raw('capability audit_read audit_write,')
+
+        with self.assertRaises(AppArmorBug):
+            # XXX ideally delete_raw should remove audit_read from the "capability audit_read audit_write," ruleset
+            #     but that's quite some work to cover a corner case.
+            self.ruleset.delete_raw('capability audit_read,')
+
+    def test_delete_raw_notfound(self):
+        with self.assertRaises(AppArmorBug):
+            self.ruleset.delete_raw('capability audit_write,')
+
+    def test_delete_duplicates(self):
+        inc = CapabilityRuleset()
+        rules = [
+            'capability chown,',
+            'deny capability chgrp, # example comment',
+        ]
+
+        for rule in rules:
+            inc.add_raw(rule)
+
+        expected_raw = [
+            '  allow capability sys_admin,',
+            '',
+        ]
+
+        expected_clean = expected_raw
+
+        self.assertEqual(self.ruleset.delete_duplicates(inc), 2)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_duplicates_2(self):
+        inc = CapabilityRuleset()
+        rules = [
+            'capability audit_write,',
+            'capability chgrp, # example comment',
+        ]
+
+        for rule in rules:
+            inc.add_raw(rule)
+
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  capability chown,',
+            '',
+        ]
+
+        self.assertEqual(self.ruleset.delete_duplicates(inc), 0)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_duplicates_3(self):
+        self.ruleset.add_raw('audit capability dac_override,')
+
+        inc = CapabilityRuleset()
+        rules = [
+            'capability dac_override,',
+        ]
+
+        for rule in rules:
+            inc.add_raw(rule)
+
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '  audit capability dac_override,',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  audit capability dac_override,',
+            '  capability chown,',
+            '',
+        ]
+
+        self.assertEqual(self.ruleset.delete_duplicates(inc), 0)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_duplicates_4(self):
+        inc = CapabilityRuleset()
+        rules = [
+            'capability,',
+        ]
+
+        for rule in rules:
+            inc.add_raw(rule)
+
+        expected_raw = [
+            '  allow capability sys_admin,',  # XXX huh? should be deleted!
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',  # XXX huh? should be deleted!
+            '',
+        ]
+
+        self.assertEqual(self.ruleset.delete_duplicates(inc), 1)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_duplicates_none(self):
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  capability chown,',
+            '',
+        ]
+
+        self.assertEqual(self.ruleset.delete_duplicates(None), 0)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+    def test_delete_duplicates_hasher(self):
+        expected_raw = [
+            '  capability chown,',
+            '  allow capability sys_admin,',
+            '  deny capability chgrp, # example comment',
+            '',
+        ]
+
+        expected_clean = [
+            '  deny capability chgrp, # example comment',
+            '',
+            '  allow capability sys_admin,',
+            '  capability chown,',
+            '',
+        ]
+
+        self.assertEqual(self.ruleset.delete_duplicates(hasher()), 0)
+        self.assertEqual(expected_raw, self.ruleset.get_raw(1))
+        self.assertEqual(expected_clean, self.ruleset.get_clean(1))
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=2)

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