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#!/usr/bin/python
# -*- mode:python; coding:utf-8; tab-width:4 -*-
from unittest import TestCase
from doublex import (Stub, Spy, ProxySpy, Mock,
assert_that, called, ANY_ARG, never,
verify, any_order_verify)
from hamcrest import greater_than, anything, contains_string
class AlreadyExists(Exception):
pass
class InvalidPassword(Exception):
pass
class AccountStore:
def save(self, login, password):
pass
def has_user(self, login):
pass
class Group(set):
def __init__(self, name):
pass
class PasswordService:
def generate(self):
pass
class AccountService:
def __init__(self, store, password_service):
self.store = store
self.password_service = password_service
def create_user(self, login):
if self.store.has_user(login):
raise AlreadyExists()
password = self.password_service.generate()
if not password:
raise InvalidPassword()
self.store.save(login, password)
def create_group(self, group_name, user_names):
group = Group(group_name)
for name in user_names:
try:
self.create_user(name)
except AlreadyExists:
pass
group.add(name)
class AccountTests(TestCase):
def test_account_creation__free_stub(self):
with Stub() as password_service:
password_service.generate().returns('some')
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_group('team', ['John', 'Peter', 'Alice'])
assert_that(store.save, called())
def test_account_creation__restricted_stub(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_user('John')
assert_that(store.save, called())
def test_account_creation__3_accounts(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_group('team', ['John', 'Peter', 'Alice'])
assert_that(store.save, called().times(3))
assert_that(store.save, called().times(greater_than(2)))
def test_account_creation__argument_values(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_user('John')
assert_that(store.save, called().with_args('John', 'some'))
assert_that(store.save, called().with_args('John', ANY_ARG))
assert_that(store.save, never(called().with_args('Alice', anything())))
assert_that(store.save,
called().with_args(contains_string('oh'), ANY_ARG))
def test_account_creation__report_message(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_group('team', ['John', 'Alice'])
# assert_that(store.save, called().with_args('Peter'))
def test_account_already_exists(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
with ProxySpy(AccountStore()) as store:
store.has_user('John').returns(True)
service = AccountService(store, password_service)
with self.assertRaises(AlreadyExists):
service.create_user('John')
def test_account_behaviour_with_mock(self):
with Stub(PasswordService) as password_service:
password_service.generate().returns('some')
with Mock(AccountStore) as store:
store.has_user('John')
store.save('John', 'some')
store.has_user('Peter')
store.save('Peter', 'some')
service = AccountService(store, password_service)
service.create_group('team', ['John', 'Peter'])
assert_that(store, verify())
# def test_account_behaviour_with_mock_any_order(self):
# with Stub(PasswordService) as password_service:
# password_service.generate().returns('some')
#
# with Mock(AccountStore) as store:
# store.has_user('John')
# store.has_user('Peter')
# store.save('John', 'some')
# store.save('Peter', 'some')
#
# service = AccountService(store, password_service)
#
# service.create_user('John')
# service.create_user('Peter')
#
# assert_that(store, any_order_verify())
def test_stub_delegates(self):
def get_pass():
return "12345"
with Stub(PasswordService) as password_service:
password_service.generate().delegates(get_pass)
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_user('John')
assert_that(store.save, called().with_args('John', '12345'))
def test_stub_delegates_list(self):
with Stub(PasswordService) as password_service:
password_service.generate().delegates(["12345", "mypass", "nothing"])
store = Spy(AccountStore)
service = AccountService(store, password_service)
service.create_group('team', ['John', 'Peter', 'Alice'])
assert_that(store.save, called().with_args('John', '12345'))
assert_that(store.save, called().with_args('Peter', 'mypass'))
assert_that(store.save, called().with_args('Alice', 'nothing'))
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