def test_should_throw_an_exception_on_duplicate_username(self):
command = CreateRelationship(follower_id=UserID(inexistent_user_id()), followee_id=maria().ID)
relationship_creator = RelationshipCreator(QueryUserByID(InMemoryUsersRepository([bob(), maria()])),
FakeClock(a_perfect_day_and_time()))
with self.assertRaises(UnknownUser):
relationship_creator.execute(command)
def test_should_throw_an_exception_if_user_does_not_exist(self):
query = PostsByUserID(user_id=inexistent_user_id())
posts_by_user_id = QueryPostByUserID(
QueryUserByID(InMemoryUsersRepository([maria()])),
InMemoryPostsRepository([a_post_by_maria()]))
with self.assertRaises(UnknownUser):
posts_by_user_id.execute(query)
def test_should_throw_an_exception_on_inexistent_user(self):
command = CreatePost(post_id=PostID(),
user_id=UserID('fc673127-c5b9-4128-9015-2bbc31163df1'),
text='',
created_at=a_perfect_day_and_time())
post_creator = PostCreator(QueryUserByID(InMemoryUsersRepository([maria()])))
with self.assertRaises(UnkownUserID):
post_creator.execute(command)
def test_should_get_a_list_of_posts_by_user_id(self):
query = PostsByUserID(user_id=maria().ID)
posts_by_user_id = QueryPostByUserID(
QueryUserByID(InMemoryUsersRepository([maria()])),
InMemoryPostsRepository([a_post_by_maria()]))
post_list = posts_by_user_id.execute(query)
assert 1 == len(post_list)
assert a_post_by_maria() in post_list
def test_should_create_a_relationsip_from_two_valid_users(self):
command = CreateRelationship(follower_id=bob().ID, followee_id=maria().ID)
relationship_creator = RelationshipCreator(QueryUserByID(InMemoryUsersRepository([bob(), maria()])),
FakeClock(a_perfect_day_and_time()))
new_relationship, events = relationship_creator.execute(command)
assert command.follower_id == new_relationship.follower_id
assert command.followee_id == new_relationship.followee_id
assert len(events) == 1
assert events[0].follower_id == command.follower_id
assert events[0].followee_id == command.followee_id
assert events[0].timestamp == a_perfect_day_and_time()
def test_should_throw_an_exception_if_user_does_not_exist(self):
query = WallByUserID(user_id=inexistent_user_id())
posts_by_user_id = QueryWallByUserID(
QueryUserByID(InMemoryUsersRepository([maria()])),
InMemoryPostsRepository(
[a_post_by_maria(),
a_post_by_bob(),
another_post_by_maria()]),
QueryRelationshipsByFollowerID(
InMemoryRelationshipRepository([bob_follows_maria()])))
with self.assertRaises(UnknownUser):
posts_by_user_id.execute(query)
def test_should_create_a_post(self):
command = CreatePost(post_id=PostID(), user_id=maria().ID, text='', created_at=a_perfect_day_and_time())
post_creator = PostCreator(QueryUserByID(InMemoryUsersRepository([maria()])))
created_post, events = post_creator.execute(command)
assert command.post_id == created_post.post_id
assert command.user_id == created_post.user_id
assert command.text == created_post.text
assert command.created_at == created_post.created_at
assert 1 == len(events)
assert command.post_id == events[0].post_id
assert command.user_id == events[0].user_id
assert command.text == events[0].text
assert command.created_at == events[0].created_at
def test_should_get_a_list_of_posts_by_user_id(self):
query = WallByUserID(user_id=bob().ID)
posts_by_user_id = QueryWallByUserID(
QueryUserByID(InMemoryUsersRepository([maria(), bob()])),
InMemoryPostsRepository(
[a_post_by_maria(),
a_post_by_bob(),
another_post_by_maria()]),
QueryRelationshipsByFollowerID(
InMemoryRelationshipRepository([bob_follows_maria()])))
post_list = posts_by_user_id.execute(query)
assert 3 == len(post_list)
assert a_post_by_maria() in post_list
assert a_post_by_bob() in post_list
assert another_post_by_maria() in post_list