ansible/test/units/TestUtils.py

# -*- coding: utf-8 -*-

import unittest
import os
import os.path
import tempfile
import yaml
import passlib.hash
import string
import StringIO
import copy

from nose.plugins.skip import SkipTest

import ansible.utils
import ansible.errors
import ansible.constants as C
import ansible.utils.template as template2

from ansible import __version__

import sys
reload(sys)
sys.setdefaultencoding("utf8") 

class TestUtils(unittest.TestCase):

    def test_before_comment(self):
        ''' see if we can detect the part of a string before a comment.  Used by INI parser in inventory '''
 
        input    = "before # comment"
        expected = "before "
        actual   = ansible.utils.before_comment(input)
        self.assertEqual(expected, actual)

        input    = "before \# not a comment"
        expected = "before # not a comment"
        actual  =  ansible.utils.before_comment(input)
        self.assertEqual(expected, actual)

        input = ""
        expected = ""
        actual = ansible.utils.before_comment(input)
        self.assertEqual(expected, actual)

        input = "#"
        expected = ""
        actual = ansible.utils.before_comment(input)
        self.assertEqual(expected, actual)

    #####################################
    ### check_conditional tests

    def test_check_conditional_jinja2_literals(self):
        # see http://jinja.pocoo.org/docs/templates/#literals

        # none
        self.assertEqual(ansible.utils.check_conditional(
            None, '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            '', '/', {}), True)

        # list
        self.assertEqual(ansible.utils.check_conditional(
            ['true'], '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            ['false'], '/', {}), False)

        # non basestring or list
        self.assertEqual(ansible.utils.check_conditional(
            {}, '/', {}), {})

        # boolean
        self.assertEqual(ansible.utils.check_conditional(
            'true', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'false', '/', {}), False)
        self.assertEqual(ansible.utils.check_conditional(
            'True', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'False', '/', {}), False)

        # integer
        self.assertEqual(ansible.utils.check_conditional(
            '1', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            '0', '/', {}), False)

        # string, beware, a string is truthy unless empty
        self.assertEqual(ansible.utils.check_conditional(
            '"yes"', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            '"no"', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            '""', '/', {}), False)


    def test_check_conditional_jinja2_variable_literals(self):
        # see http://jinja.pocoo.org/docs/templates/#literals

        # boolean
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'True'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'true'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'False'}), False)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'false'}), False)

        # integer
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '1'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 1}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '0'}), False)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 0}), False)

        # string, beware, a string is truthy unless empty
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '"yes"'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '"no"'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '""'}), False)

        # Python boolean in Jinja2 expression
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': True}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': False}), False)


    def test_check_conditional_jinja2_expression(self):
        self.assertEqual(ansible.utils.check_conditional(
            '1 == 1', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'bar == 42', '/', {'bar': 42}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'bar != 42', '/', {'bar': 42}), False)


    def test_check_conditional_jinja2_expression_in_variable(self):
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': '1 == 1'}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'bar == 42', 'bar': 42}), True)
        self.assertEqual(ansible.utils.check_conditional(
            'var', '/', {'var': 'bar != 42', 'bar': 42}), False)

    def test_check_conditional_jinja2_unicode(self):
        self.assertEqual(ansible.utils.check_conditional(
            u'"\u00df"', '/', {}), True)
        self.assertEqual(ansible.utils.check_conditional(
            u'var == "\u00df"', '/', {'var': u'\u00df'}), True)


    #####################################
    ### key-value parsing

    def test_parse_kv_basic(self):
        self.assertEqual(ansible.utils.parse_kv('a=simple b="with space" c="this=that"'),
                {'a': 'simple', 'b': 'with space', 'c': 'this=that'})


    def test_jsonify(self):
        self.assertEqual(ansible.utils.jsonify(None), '{}')
        self.assertEqual(ansible.utils.jsonify(dict(foo='bar', baz=['qux'])),
               '{"baz": ["qux"], "foo": "bar"}')
        expected = '''{
    "baz": [
        "qux"
    ], 
    "foo": "bar"
}'''
        self.assertEqual(ansible.utils.jsonify(dict(foo='bar', baz=['qux']), format=True), expected)

    def test_is_failed(self):
        self.assertEqual(ansible.utils.is_failed(dict(rc=0)), False)
        self.assertEqual(ansible.utils.is_failed(dict(rc=1)), True)
        self.assertEqual(ansible.utils.is_failed(dict()), False)
        self.assertEqual(ansible.utils.is_failed(dict(failed=False)), False)
        self.assertEqual(ansible.utils.is_failed(dict(failed=True)), True)
        self.assertEqual(ansible.utils.is_failed(dict(failed='True')), True)
        self.assertEqual(ansible.utils.is_failed(dict(failed='true')), True)

    def test_is_changed(self):
        self.assertEqual(ansible.utils.is_changed(dict()), False)
        self.assertEqual(ansible.utils.is_changed(dict(changed=False)), False)
        self.assertEqual(ansible.utils.is_changed(dict(changed=True)), True)
        self.assertEqual(ansible.utils.is_changed(dict(changed='True')), True)
        self.assertEqual(ansible.utils.is_changed(dict(changed='true')), True)

    def test_path_dwim(self):
        self.assertEqual(ansible.utils.path_dwim(None, __file__),
               __file__)
        self.assertEqual(ansible.utils.path_dwim(None, '~'),
               os.path.expanduser('~'))
        self.assertEqual(ansible.utils.path_dwim(None, 'TestUtils.py'),
               __file__.rstrip('c'))

    def test_path_dwim_relative(self):
        self.assertEqual(ansible.utils.path_dwim_relative(__file__, 'units', 'TestUtils.py',
                                                          os.path.dirname(os.path.dirname(__file__))),
               __file__.rstrip('c'))

    def test_json_loads(self):
        self.assertEqual(ansible.utils.json_loads('{"foo": "bar"}'), dict(foo='bar'))

    def test_parse_json(self):
        # leading junk
        self.assertEqual(ansible.utils.parse_json('ansible\n{"foo": "bar"}'), dict(foo="bar"))

        # "baby" json
        self.assertEqual(ansible.utils.parse_json('foo=bar baz=qux'), dict(foo='bar', baz='qux'))

        # No closing quotation
        try:
            ansible.utils.parse_json('foo=bar "')
        except ValueError:
            pass
        else:
            raise AssertionError('Incorrect exception, expected ValueError')

        # Failed to parse
        try:
            ansible.utils.parse_json('{')
        except ansible.errors.AnsibleError:
            pass
        else:
            raise AssertionError('Incorrect exception, expected ansible.errors.AnsibleError')

        # boolean changed/failed
        self.assertEqual(ansible.utils.parse_json('changed=true'), dict(changed=True))
        self.assertEqual(ansible.utils.parse_json('changed=false'), dict(changed=False))
        self.assertEqual(ansible.utils.parse_json('failed=true'), dict(failed=True))
        self.assertEqual(ansible.utils.parse_json('failed=false'), dict(failed=False))

        # rc
        self.assertEqual(ansible.utils.parse_json('rc=0'), dict(rc=0))

        # Just a string
        self.assertEqual(ansible.utils.parse_json('foo'), dict(failed=True, parsed=False, msg='foo'))

    def test_smush_braces(self):
        self.assertEqual(ansible.utils.smush_braces('{{ foo}}'), '{{foo}}')
        self.assertEqual(ansible.utils.smush_braces('{{foo }}'), '{{foo}}')
        self.assertEqual(ansible.utils.smush_braces('{{ foo }}'), '{{foo}}')

    def test_smush_ds(self):
        # list
        self.assertEqual(ansible.utils.smush_ds(['foo={{ foo }}']), ['foo={{foo}}'])

        # dict
        self.assertEqual(ansible.utils.smush_ds(dict(foo='{{ foo }}')), dict(foo='{{foo}}'))

        # string
        self.assertEqual(ansible.utils.smush_ds('foo={{ foo }}'), 'foo={{foo}}')

        # int
        self.assertEqual(ansible.utils.smush_ds(0), 0)

    def test_parse_yaml(self):
        #json
        self.assertEqual(ansible.utils.parse_yaml('{"foo": "bar"}'), dict(foo='bar'))

        # broken json
        try:
            ansible.utils.parse_yaml('{')
        except ansible.errors.AnsibleError:
            pass
        else:
            raise AssertionError

        # broken json with path_hint
        try:
            ansible.utils.parse_yaml('{', path_hint='foo')
        except ansible.errors.AnsibleError:
            pass
        else:
            raise AssertionError

        # yaml with front-matter
        self.assertEqual(ansible.utils.parse_yaml("---\nfoo: bar"), dict(foo='bar'))
        # yaml no front-matter
        self.assertEqual(ansible.utils.parse_yaml('foo: bar'), dict(foo='bar'))
        # yaml indented first line (See #6348)
        self.assertEqual(ansible.utils.parse_yaml(' - foo: bar\n   baz: qux'), [dict(foo='bar', baz='qux')])

    def test_process_common_errors(self):
        # no quote
        self.assertTrue('YAML thought it' in ansible.utils.process_common_errors('', 'foo: {{bar}}', 6))

        # extra colon
        self.assertTrue('an extra unquoted colon' in ansible.utils.process_common_errors('', 'foo: bar:', 8))

        # match
        self.assertTrue('same kind of quote' in ansible.utils.process_common_errors('', 'foo: "{{bar}}"baz', 6))
        self.assertTrue('same kind of quote' in ansible.utils.process_common_errors('', "foo: '{{bar}}'baz", 6))

        # unbalanced
        self.assertTrue('We could be wrong' in ansible.utils.process_common_errors('', 'foo: "bad" "wolf"', 6))
        self.assertTrue('We could be wrong' in ansible.utils.process_common_errors('', "foo: 'bad' 'wolf'", 6))


    def test_process_yaml_error(self):
        data = 'foo: bar\n baz: qux'
        try:
            ansible.utils.parse_yaml(data)
        except yaml.YAMLError, exc:
            try:
                ansible.utils.process_yaml_error(exc, data, __file__)
            except ansible.errors.AnsibleYAMLValidationFailed, e:
                self.assertTrue('Syntax Error while loading' in e.msg)
            else:
                raise AssertionError('Incorrect exception, expected AnsibleYAMLValidationFailed')

        data = 'foo: bar\n baz: {{qux}}'
        try:
            ansible.utils.parse_yaml(data)
        except yaml.YAMLError, exc:
            try:
                ansible.utils.process_yaml_error(exc, data, __file__)
            except ansible.errors.AnsibleYAMLValidationFailed, e:
                self.assertTrue('Syntax Error while loading' in e.msg)
            else:
                raise AssertionError('Incorrect exception, expected AnsibleYAMLValidationFailed')

        data = '\xFF'
        try:
            ansible.utils.parse_yaml(data)
        except yaml.YAMLError, exc:
            try:
                ansible.utils.process_yaml_error(exc, data, __file__)
            except ansible.errors.AnsibleYAMLValidationFailed, e:
                self.assertTrue('Check over' in e.msg)
            else:
                raise AssertionError('Incorrect exception, expected AnsibleYAMLValidationFailed')

        data = '\xFF'
        try:
            ansible.utils.parse_yaml(data)
        except yaml.YAMLError, exc:
            try:
                ansible.utils.process_yaml_error(exc, data, None)
            except ansible.errors.AnsibleYAMLValidationFailed, e:
                self.assertTrue('Could not parse YAML.' in e.msg)
            else:
                raise AssertionError('Incorrect exception, expected AnsibleYAMLValidationFailed')

    def test_parse_yaml_from_file(self):
        test = os.path.join(os.path.dirname(__file__), 'inventory_test_data',
                            'common_vars.yml')
        encrypted = os.path.join(os.path.dirname(__file__), 'inventory_test_data',
                                 'encrypted.yml')
        broken = os.path.join(os.path.dirname(__file__), 'inventory_test_data',
                              'broken.yml')

        try:
            ansible.utils.parse_yaml_from_file(os.path.dirname(__file__))
        except ansible.errors.AnsibleError:
            pass
        else:
            raise AssertionError('Incorrect exception, expected AnsibleError')

        self.assertEqual(ansible.utils.parse_yaml_from_file(test), yaml.safe_load(open(test)))

        self.assertEqual(ansible.utils.parse_yaml_from_file(encrypted, 'ansible'), dict(foo='bar'))

        try:
            ansible.utils.parse_yaml_from_file(broken)
        except ansible.errors.AnsibleYAMLValidationFailed, e:
            self.assertTrue('Syntax Error while loading' in e.msg)
        else:
            raise AssertionError('Incorrect exception, expected AnsibleYAMLValidationFailed')

    def test_merge_hash(self):
        self.assertEqual(ansible.utils.merge_hash(dict(foo='bar', baz='qux'), dict(foo='baz')),
               dict(foo='baz', baz='qux'))
        self.assertEqual(ansible.utils.merge_hash(dict(foo=dict(bar='baz')), dict(foo=dict(bar='qux'))),
               dict(foo=dict(bar='qux')))

    def test_md5s(self):
        self.assertEqual(ansible.utils.md5s('ansible'), '640c8a5376aa12fa15cf02130ce239a6')
        # Need a test that causes UnicodeEncodeError See 4221

    def test_md5(self):
        self.assertEqual(ansible.utils.md5(os.path.join(os.path.dirname(__file__), 'ansible.cfg')),
                         'fb7b5b90ea63f04bde33e804b6fad42c')
        self.assertEqual(ansible.utils.md5(os.path.join(os.path.dirname(__file__), 'ansible.cf')),
                         None)

    def test_default(self):
        self.assertEqual(ansible.utils.default(None, lambda: {}), {})
        self.assertEqual(ansible.utils.default(dict(foo='bar'), lambda: {}), dict(foo='bar'))

    def test__gitinfo(self):
        # this fails if not run from git clone
        # self.assertEqual('last updated' in ansible.utils._gitinfo())
        # missing test for git submodule
        # missing test outside of git clone
        pass

    def test_version(self):
        version = ansible.utils.version('ansible')
        self.assertTrue(version.startswith('ansible %s' % __version__))
        # this fails if not run from git clone
        # self.assertEqual('last updated' in version)

    def test_getch(self):
        # figure out how to test this
        pass

    def test_sanitize_output(self):
        self.assertEqual(ansible.utils.sanitize_output('password=foo'), 'password=VALUE_HIDDEN')
        self.assertEqual(ansible.utils.sanitize_output('foo=user:pass@foo/whatever'),
                         'foo=user:********@foo/whatever')
        self.assertEqual(ansible.utils.sanitize_output('foo=http://username:pass@wherever/foo'),
                         'foo=http://username:********@wherever/foo')
        self.assertEqual(ansible.utils.sanitize_output('foo=http://wherever/foo'),
                         'foo=http://wherever/foo')

    def test_increment_debug(self):
        ansible.utils.VERBOSITY = 0
        ansible.utils.increment_debug(None, None, None, None)
        self.assertEqual(ansible.utils.VERBOSITY, 1)

    def test_base_parser(self):
        output = ansible.utils.base_parser(output_opts=True)
        self.assertTrue(output.has_option('--one-line') and output.has_option('--tree'))

        runas = ansible.utils.base_parser(runas_opts=True)
        for opt in ['--sudo', '--sudo-user', '--user', '--su', '--su-user']:
            self.assertTrue(runas.has_option(opt))

        async = ansible.utils.base_parser(async_opts=True)
        self.assertTrue(async.has_option('--poll') and async.has_option('--background'))

        connect = ansible.utils.base_parser(connect_opts=True)
        self.assertTrue(connect.has_option('--connection'))

        subset = ansible.utils.base_parser(subset_opts=True)
        self.assertTrue(subset.has_option('--limit'))

        check = ansible.utils.base_parser(check_opts=True)
        self.assertTrue(check.has_option('--check'))

        diff = ansible.utils.base_parser(diff_opts=True)
        self.assertTrue(diff.has_option('--diff'))

    def test_do_encrypt(self):
        salt_chars = string.ascii_letters + string.digits + './'
        salt = ansible.utils.random_password(length=8, chars=salt_chars)
        hash = ansible.utils.do_encrypt('ansible', 'sha256_crypt', salt=salt)
        self.assertTrue(passlib.hash.sha256_crypt.verify('ansible', hash))

        hash = ansible.utils.do_encrypt('ansible', 'sha256_crypt')
        self.assertTrue(passlib.hash.sha256_crypt.verify('ansible', hash))

        hash = ansible.utils.do_encrypt('ansible', 'md5_crypt', salt_size=4)
        self.assertTrue(passlib.hash.md5_crypt.verify('ansible', hash))


        try:
            ansible.utils.do_encrypt('ansible', 'ansible')
        except ansible.errors.AnsibleError:
            pass
        else:
            raise AssertionError('Incorrect exception, expected AnsibleError')

    def test_last_non_blank_line(self):
        self.assertEqual(ansible.utils.last_non_blank_line('a\n\nb\n\nc'), 'c')
        self.assertEqual(ansible.utils.last_non_blank_line(''), '')

    def test_filter_leading_non_json_lines(self):
        self.assertEqual(ansible.utils.filter_leading_non_json_lines('a\nb\nansible!\n{"foo": "bar"}'),
                         '{"foo": "bar"}\n')
        self.assertEqual(ansible.utils.filter_leading_non_json_lines('a\nb\nansible!\n["foo", "bar"]'),
                         '["foo", "bar"]\n')
        self.assertEqual(ansible.utils.filter_leading_non_json_lines('a\nb\nansible!\nfoo=bar'),
                         'foo=bar\n')

    def test_boolean(self):
        self.assertEqual(ansible.utils.boolean("true"), True)
        self.assertEqual(ansible.utils.boolean("True"), True)
        self.assertEqual(ansible.utils.boolean("TRUE"), True)
        self.assertEqual(ansible.utils.boolean("t"), True)
        self.assertEqual(ansible.utils.boolean("T"), True)
        self.assertEqual(ansible.utils.boolean("Y"), True)
        self.assertEqual(ansible.utils.boolean("y"), True)
        self.assertEqual(ansible.utils.boolean("1"), True)
        self.assertEqual(ansible.utils.boolean(1), True)
        self.assertEqual(ansible.utils.boolean("false"), False)
        self.assertEqual(ansible.utils.boolean("False"), False)
        self.assertEqual(ansible.utils.boolean("0"), False)
        self.assertEqual(ansible.utils.boolean(0), False)
        self.assertEqual(ansible.utils.boolean("foo"), False)

    #def test_make_sudo_cmd(self):
    #    cmd = ansible.utils.make_sudo_cmd('root', '/bin/sh', '/bin/ls')
    #    self.assertTrue(isinstance(cmd, tuple))
    #    self.assertEqual(len(cmd), 3)
    #    self.assertTrue('-u root' in cmd[0])
    #    self.assertTrue('-p "[sudo via ansible, key=' in cmd[0] and cmd[1].startswith('[sudo via ansible, key'))
    #    self.assertTrue('echo SUDO-SUCCESS-' in cmd[0] and cmd[2].startswith('SUDO-SUCCESS-'))
    #    self.assertTrue('sudo -k' in cmd[0])

    def test_make_su_cmd(self):
        cmd = ansible.utils.make_su_cmd('root', '/bin/sh', '/bin/ls')
        self.assertTrue(isinstance(cmd, tuple))
        self.assertEqual(len(cmd), 3)
        self.assertTrue(' root /bin/sh' in cmd[0])
        self.assertTrue(cmd[1] == 'assword: ')
        self.assertTrue('echo SUDO-SUCCESS-' in cmd[0] and cmd[2].startswith('SUDO-SUCCESS-'))

    def test_to_unicode(self):
        uni = ansible.utils.to_unicode(u'ansible')
        self.assertTrue(isinstance(uni, unicode))
        self.assertEqual(uni, u'ansible')

        none = ansible.utils.to_unicode(None)
        self.assertTrue(isinstance(none, type(None)))
        self.assertTrue(none is None)

        utf8 = ansible.utils.to_unicode('ansible')
        self.assertTrue(isinstance(utf8, unicode))
        self.assertEqual(utf8, u'ansible')

    def test_is_list_of_strings(self):
        self.assertEqual(ansible.utils.is_list_of_strings(['foo', 'bar', u'baz']), True)
        self.assertEqual(ansible.utils.is_list_of_strings(['foo', 'bar', True]), False)
        self.assertEqual(ansible.utils.is_list_of_strings(['one', 2, 'three']), False)

    def test_safe_eval(self):
        # Not basestring
        self.assertEqual(ansible.utils.safe_eval(len), len)
        self.assertEqual(ansible.utils.safe_eval(1), 1)
        self.assertEqual(ansible.utils.safe_eval(len, include_exceptions=True), (len, None))
        self.assertEqual(ansible.utils.safe_eval(1, include_exceptions=True), (1, None))

        # module
        self.assertEqual(ansible.utils.safe_eval('foo.bar('), 'foo.bar(')
        self.assertEqual(ansible.utils.safe_eval('foo.bar(', include_exceptions=True), ('foo.bar(', None))

        # import
        self.assertEqual(ansible.utils.safe_eval('import foo'), 'import foo')
        self.assertEqual(ansible.utils.safe_eval('import foo', include_exceptions=True), ('import foo', None))

        # valid simple eval
        self.assertEqual(ansible.utils.safe_eval('True'), True)
        self.assertEqual(ansible.utils.safe_eval('True', include_exceptions=True), (True, None))

        # valid eval with lookup
        self.assertEqual(ansible.utils.safe_eval('foo + bar', dict(foo=1, bar=2)), 3)
        self.assertEqual(ansible.utils.safe_eval('foo + bar', dict(foo=1, bar=2), include_exceptions=True), (3, None))

        # invalid eval
        self.assertEqual(ansible.utils.safe_eval('foo'), 'foo')
        nameerror = ansible.utils.safe_eval('foo', include_exceptions=True)
        self.assertTrue(isinstance(nameerror, tuple))
        self.assertEqual(nameerror[0], 'foo')
        self.assertTrue(isinstance(nameerror[1], NameError))

    def test_listify_lookup_plugin_terms(self):
        basedir = os.path.dirname(__file__)
        self.assertEqual(ansible.utils.listify_lookup_plugin_terms('things', basedir, dict()),
                         ['things'])
        self.assertEqual(ansible.utils.listify_lookup_plugin_terms('things', basedir, dict(things=['one', 'two'])),
                         ['one', 'two'])

    def test_deprecated(self):
        sys_stderr = sys.stderr
        sys.stderr = StringIO.StringIO()
        ansible.utils.deprecated('Ack!', '0.0')
        out = sys.stderr.getvalue()
        self.assertTrue('0.0' in out)
        self.assertTrue('[DEPRECATION WARNING]' in out)

        sys.stderr = StringIO.StringIO()
        ansible.utils.deprecated('Ack!', None)
        out = sys.stderr.getvalue()
        self.assertTrue('0.0' not in out)
        self.assertTrue('[DEPRECATION WARNING]' in out)

        sys.stderr = StringIO.StringIO()
        warnings = C.DEPRECATION_WARNINGS
        C.DEPRECATION_WARNINGS = False
        ansible.utils.deprecated('Ack!', None)
        out = sys.stderr.getvalue()
        self.assertTrue(not out)
        C.DEPRECATION_WARNINGS = warnings

        sys.stderr = sys_stderr

        try:
            ansible.utils.deprecated('Ack!', '0.0', True)
        except ansible.errors.AnsibleError, e:
            self.assertTrue('0.0' not in e.msg)
            self.assertTrue('[DEPRECATED]' in e.msg)
        else:
            raise AssertionError("Incorrect exception, expected AnsibleError")

    def test_warning(self):
        sys_stderr = sys.stderr
        sys.stderr = StringIO.StringIO()
        ansible.utils.warning('ANSIBLE')
        out = sys.stderr.getvalue()
        sys.stderr = sys_stderr
        self.assertTrue('[WARNING]: ANSIBLE' in out)

    def test_combine_vars(self):
        one = {'foo': {'bar': True}, 'baz': {'one': 'qux'}}
        two = {'baz': {'two': 'qux'}}
        replace = {'baz': {'two': 'qux'}, 'foo': {'bar': True}}
        merge = {'baz': {'two': 'qux', 'one': 'qux'}, 'foo': {'bar': True}}

        C.DEFAULT_HASH_BEHAVIOUR = 'replace'
        self.assertEqual(ansible.utils.combine_vars(one, two), replace)

        C.DEFAULT_HASH_BEHAVIOUR = 'merge'
        self.assertEqual(ansible.utils.combine_vars(one, two), merge)

    def test_err(self):
        sys_stderr = sys.stderr
        sys.stderr = StringIO.StringIO()
        ansible.utils.err('ANSIBLE')
        out = sys.stderr.getvalue()
        sys.stderr = sys_stderr
        self.assertEqual(out, 'ANSIBLE\n')

    def test_exit(self):
        sys_stderr = sys.stderr
        sys.stderr = StringIO.StringIO()
        try:
            ansible.utils.exit('ansible')
        except SystemExit, e:
            self.assertEqual(e.code, 1)
            self.assertEqual(sys.stderr.getvalue(), 'ansible\n')
        else:
            raise AssertionError('Incorrect exception, expected SystemExit')
        finally:
            sys.stderr = sys_stderr

    def test_unfrackpath(self):
        os.environ['TEST_ROOT'] = os.path.dirname(os.path.dirname(__file__))
        self.assertEqual(ansible.utils.unfrackpath('$TEST_ROOT/units/../units/TestUtils.py'), __file__.rstrip('c'))

    def test_is_executable(self):
        self.assertEqual(ansible.utils.is_executable(__file__), 0)

        bin_ansible = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
                                   'bin', 'ansible')
        self.assertNotEqual(ansible.utils.is_executable(bin_ansible), 0)

    def test_get_diff(self):
        standard = dict(
            before_header='foo',
            after_header='bar',
            before='fooo',
            after='foo'
        )

        standard_expected = """--- before: foo
+++ after: bar
@@ -1 +1 @@
-fooo+foo"""

        # workaround py26 and py27 difflib differences        
        standard_expected = """-fooo+foo"""
        diff = ansible.utils.get_diff(standard)
        diff = diff.split('\n')
        del diff[0]
        del diff[0]
        del diff[0]
        diff = '\n'.join(diff)
        self.assertEqual(diff, unicode(standard_expected))