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import abc

from assertpy import assert_that, fail


class Person(object):
    def __init__(self, first_name, last_name):
        self.first_name = first_name
        self.last_name = last_name

    @property
    def name(self):
        return '%s %s' % (self.first_name, self.last_name)

    def say_hello(self):
        return 'Hello, %s!' % self.first_name


class Developer(Person):
    def say_hello(self):
        return '%s writes code.' % self.first_name


class AbstractAutomobile(object):
    __metaclass__ = abc.ABCMeta

    def __init__(self):
        pass

    @abc.abstractproperty
    def classification(self):
        raise NotImplementedError('This method must be overridden')


class Car(AbstractAutomobile):
    @property
    def classification(self):
        return 'car'


class Truck(AbstractAutomobile):
    @property
    def classification(self):
        return 'truck'


fred = Person('Fred', 'Smith')
joe = Developer('Joe', 'Coder')
people = [fred, joe]
car = Car()
truck = Truck()


def test_is_type_of():
    assert_that(fred).is_type_of(Person)
    assert_that(joe).is_type_of(Developer)
    assert_that(car).is_type_of(Car)
    assert_that(truck).is_type_of(Truck)


def test_is_type_of_class():
    assert_that(fred.__class__).is_type_of(Person.__class__)


def test_is_type_of_class_failure():
    try:
        assert_that(fred.__class__).is_type_of(Person)
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('to be of type <Person>, but was not')


def test_is_instance_of():
    assert_that(fred).is_instance_of(Person)
    assert_that(fred).is_instance_of(object)

    assert_that(joe).is_instance_of(Developer)
    assert_that(joe).is_instance_of(Person)
    assert_that(joe).is_instance_of(object)

    assert_that(car).is_instance_of(Car)
    assert_that(car).is_instance_of(AbstractAutomobile)
    assert_that(car).is_instance_of(object)

    assert_that(truck).is_instance_of(Truck)
    assert_that(truck).is_instance_of(AbstractAutomobile)
    assert_that(truck).is_instance_of(object)


def test_is_instance_of_class():
    assert_that(fred.__class__).is_instance_of(Person.__class__)


def test_is_instance_of_class_failure():
    try:
        assert_that(fred.__class__).is_instance_of(Person)
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('to be instance of class <Person>, but was not')


def test_extract_attribute():
    assert_that(people).extracting('first_name').is_equal_to(['Fred', 'Joe'])
    assert_that(people).extracting('first_name').contains('Fred', 'Joe')


def test_extract_property():
    assert_that(people).extracting('name').contains('Fred Smith', 'Joe Coder')


def test_extract_multiple():
    assert_that(people).extracting('first_name', 'name').contains(('Fred', 'Fred Smith'), ('Joe', 'Joe Coder'))


def test_extract_zero_arg_method():
    assert_that(people).extracting('say_hello').contains('Hello, Fred!', 'Joe writes code.')