How to use nose - 10 common examples

def test_init(self):
        # Test the default initialization
        cc = ComputeClass('test', 'key', 'val', 'echo')
        assert_equal(cc.name, 'test', msg='Name not set correctly')
        assert_equal(cc.resource, 'key', msg='Resource not set correctly')
        assert_equal(cc.value, 'val', msg='Value not set correctly')

        cc = ComputeClass('test2', 'key2', 'val2', 'echo')
        assert_equal(cc.name, 'test2', msg='Name not set correctly')
        assert_equal(cc.resource, 'key2', msg='Resource not set correctly')
        assert_equal(cc.value, 'val2', msg='Value not set correctly')

def test_magics_parser_multiple_lines_command():
    user_command = """hvacText = sc.textFile("path")
hvacSchema = StructType([StructField("date", StringType(), False),StructField("time", StringType(), False),StructField("targettemp", IntegerType(), False),StructField("actualtemp", IntegerType(), False),StructField("buildingID", StringType(), False)])
hvac = hvacText.map(lambda s: s.split(",")).filter(lambda s: s[0] != "Date").map(lambda s:(str(s[0]), str(s[1]), int(s[2]), int(s[3]), str(s[6]) ))
hvacdf = sqlContext.createDataFrame(hvac,hvacSchema)
hvacdf.registerTempTable("hvac")
data = sqlContext.sql("select buildingID, (targettemp - actualtemp) as temp_diff, date from hvac where date = \"6/1/13\"")
data"""

    subcommand, force, output_var, command = parser.parse_user_command(user_command)
    assert_equals("run", subcommand)
    assert_equals(False, force)
    assert output_var is None
    assert_equals(user_command, command)

def custom_test(**vars):
        print("I accept anything")
        return

    class MyValidator(pyblish.api.Validator):
        def process(self, context):
            assert False, "I won't stop the extractor"

    class MyExtractor(pyblish.api.Extractor):
        def process(self, context):
            print("I came, I saw, I extracted..")
            count["#"] += 1

    pyblish.api.register_test(custom_test)
    pyblish.util.publish(plugins=[MyValidator, MyExtractor])
    assert_equals(count["#"], 1)

# Only sync already imported
      ldap_access.CACHED_LDAP_CONN.remove_posix_user_group_for_test('posix_person', 'PosixGroup')
      import_ldap_groups(ldap_access.CACHED_LDAP_CONN, 'PosixGroup', import_members=False, import_members_recursive=False, sync_users=True, import_by_dn=False)
      assert_equal(test_users.user_set.all().count(), 1)
      assert_equal(User.objects.get(username='posix_person').groups.all().count(), 0)

      # Import missing user
      ldap_access.CACHED_LDAP_CONN.add_posix_user_group_for_test('posix_person', 'PosixGroup')
      import_ldap_groups(ldap_access.CACHED_LDAP_CONN, 'PosixGroup', import_members=True, import_members_recursive=False, sync_users=True, import_by_dn=False)
      assert_equal(test_users.user_set.all().count(), 2)
      assert_equal(User.objects.get(username='posix_person').groups.all().count(), 1)

      # Import all members of PosixGroup and members of subgroups (there should be no subgroups)
      import_ldap_groups(ldap_access.CACHED_LDAP_CONN, 'PosixGroup', import_members=True, import_members_recursive=True, sync_users=True, import_by_dn=False)
      test_users = Group.objects.get(name='PosixGroup')
      assert_true(LdapGroup.objects.filter(group=test_users).exists())
      assert_equal(test_users.user_set.all().count(), 2)

      # Import all members of NestedPosixGroups and members of subgroups
      reset_all_users()
      reset_all_groups()
      import_ldap_groups(ldap_access.CACHED_LDAP_CONN, 'NestedPosixGroups', import_members=True, import_members_recursive=True, sync_users=True, import_by_dn=False)
      test_users = Group.objects.get(name='NestedPosixGroups')
      assert_true(LdapGroup.objects.filter(group=test_users).exists())
      assert_equal(test_users.user_set.all().count(), 0)
      test_users = Group.objects.get(name='PosixGroup')
      assert_true(LdapGroup.objects.filter(group=test_users).exists())
      assert_equal(test_users.user_set.all().count(), 2)

      # Make sure Hue groups with naming collisions don't get marked as LDAP groups
      hue_user = User.objects.create(username='otherguy', first_name='Different', last_name='Guy')
      hue_group = Group.objects.create(name='OtherGroup')

path = os.path.join(bin_location, binary)

    with archr.targets.LocalTarget([path], target_os='cgc') as target:
        crash = rex.Crash(target, inp, fast_mode=True, rop_cache_path=os.path.join(cache_location, os.path.basename(binary)))
        zp = crash.state.get_plugin("zen_plugin")
        nose.tools.assert_true(len(zp.controlled_transmits) == 1)

        flag_leaks = list(crash.point_to_flag())

        nose.tools.assert_true(len(flag_leaks) >= 1)

        for ptfi in flag_leaks:
            cg = colorguard.ColorGuard(path, ptfi)
            nose.tools.assert_true(cg.causes_leak())
            pov = cg.attempt_exploit()
            nose.tools.assert_true(pov.test_binary())

        crash.project.loader.close()

    @istest
    def installs_a_package_if_its_not_installed_yet_by_name_and_version(self):
        with self.execute_mock() as execute, self.mock_role_method('is_package_installed') as is_package_installed:
            is_package_installed.return_value = False

            self.role.ensure_package_installed('runit', '123')

            execute.assert_called_with('gem install runit(123)', sudo=True, stdout=False)

Sequence:
        gr0: start a slow find()
        gr1: start a fast find()
        gr1: get results
        gr0: get results
        """
        NOT_STARTED = 0
        SUCCESS = 1
        SKIP = 2

        try:
            from multiprocessing import Value, Process
        except ImportError:
            # Python < 2.6
            raise SkipTest('No multiprocessing module')
        
        outcome = Value('i', NOT_STARTED)

        results = {
            'find_fast_result': None,
            'find_slow_result': None,
        }

        # Do test in separate process so patch_socket() doesn't affect all
        # subsequent unittests
        def do_test():
            if use_greenlets:
                try:
                    from gevent import Greenlet
                    from gevent import monkey

def setupNetworks(self, nets, bonds, opts, **kwargs):
        if opts.pop('ovs', True):
            # setup every network as OVS network
            for net, attrs in nets.items():
                if not attrs.get('bridged', True):
                    raise SkipTest('OVS does not support bridgeless networks')
                if 'remove' not in attrs:
                    nets[net].update({'custom': {'ovs': True}})
            for bond, attrs in bonds.items():
                if 'remove' not in attrs:
                    bond_opts = bonds[bond].get('options', '').split()
                    modified = False
                    for i in range(len(bond_opts)):
                        if bond_opts[i].startswith('custom='):
                            bond_opts[i] = ('custom=%s,ovs=True' %
                                            bond_opts[i].split('=', 1)[1])
                            modified = True
                            break
                    if not modified:
                        bond_opts.append('custom=ovs=True')
                    bonds[bond]['options'] = ' '.join(bond_opts)

def test():
    '''Test cute-(un)pickling on various objects.'''
    if not import_tools.exists('multiprocessing'):
        raise nose.SkipTest('`multiprocessing` is not installed.')
    
    import multiprocessing
    
    totally_pickleable_things = [
        [1, 2, (3, 4)],
        {1: 2, 3: set((1, 2, 3))},
        None, True, False,
        (1, 2, 'meow'),
        'qweqweqasd',
        PickleableObject()
    ]
    
    thing = Object()
    thing.a, thing.b, thing.c, thing.d, thing.e, thing.f, thing.g, thing.h = \
         totally_pickleable_things

def test_StepDict_can_load_a_step_from_a_function():
    u"lettuce.STEP_REGISTRY.load_func(func) append item(step, func) to STEP_REGISTRY"
    steps = StepDict()
    def a_step_to_test():
        pass

    steps.load_func(a_step_to_test)

    expected_sentence = "A step to test"
    assert_in(expected_sentence, steps)
    assert_equal(steps[expected_sentence], a_step_to_test)