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worblehat/tests/queries/test_borrowing_queue.py
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Python

from datetime import datetime, timedelta
from sqlalchemy.orm import Session
from worblehat.models import (
Bookcase,
BookcaseItem,
BookcaseItemBorrowingQueue,
BookcaseShelf,
MediaType,
)
from worblehat.queries.borrowing_queue import (
is_in_borrowing_queue,
list_all_queue_items,
list_pending_queue_items_for_item,
)
def _make_bookcase_item(
sql_session: Session,
name: str = "Some Book",
isbn: str = "1234567890",
) -> BookcaseItem:
"""Creates a BookcaseItem along with the MediaType/Bookcase/BookcaseShelf it needs."""
media_type = MediaType(name=f"Media type for {name}")
bookcase = Bookcase(name=f"Bookcase for {name}")
shelf = BookcaseShelf(row=0, column=0, bookcase=bookcase)
sql_session.add_all([media_type, bookcase, shelf])
sql_session.flush()
item = BookcaseItem(name, isbn)
item.media_type = media_type
item.shelf = shelf
sql_session.add(item)
sql_session.flush()
return item
def test_list_all_queue_items_orders_by_entered_queue_time(sql_session: Session) -> None:
item = _make_bookcase_item(sql_session)
later = BookcaseItemBorrowingQueue("alice", item)
later.entered_queue_time = datetime.now() + timedelta(hours=1)
sooner = BookcaseItemBorrowingQueue("bob", item)
sooner.entered_queue_time = datetime.now()
sql_session.add_all([later, sooner])
sql_session.flush()
result = list_all_queue_items(sql_session)
assert result == [sooner, later]
def test_is_in_borrowing_queue_true_when_present(sql_session: Session) -> None:
item = _make_bookcase_item(sql_session)
sql_session.add(BookcaseItemBorrowingQueue("alice", item))
sql_session.flush()
assert is_in_borrowing_queue(sql_session, "alice", item) is True
def test_is_in_borrowing_queue_false_for_other_user(sql_session: Session) -> None:
item = _make_bookcase_item(sql_session)
sql_session.add(BookcaseItemBorrowingQueue("alice", item))
sql_session.flush()
assert is_in_borrowing_queue(sql_session, "bob", item) is False
def test_is_in_borrowing_queue_false_when_empty(sql_session: Session) -> None:
item = _make_bookcase_item(sql_session)
sql_session.add(item)
sql_session.flush()
assert is_in_borrowing_queue(sql_session, "alice", item) is False
def test_list_pending_queue_items_for_item_excludes_available_items(sql_session: Session) -> None:
item = _make_bookcase_item(sql_session)
pending = BookcaseItemBorrowingQueue("alice", item)
became_available = BookcaseItemBorrowingQueue("bob", item)
became_available.item_became_available_time = datetime.now()
sql_session.add_all([pending, became_available])
sql_session.flush()
result = list_pending_queue_items_for_item(sql_session, item)
assert result == [pending]
def test_list_pending_queue_items_for_item_scopes_to_item(sql_session: Session) -> None:
item_a = _make_bookcase_item(sql_session, name="Book A", isbn="1111111111")
item_b = _make_bookcase_item(sql_session, name="Book B", isbn="2222222222")
queue_item_a = BookcaseItemBorrowingQueue("alice", item_a)
queue_item_b = BookcaseItemBorrowingQueue("bob", item_b)
sql_session.add_all([queue_item_a, queue_item_b])
sql_session.flush()
result = list_pending_queue_items_for_item(sql_session, item_a)
assert result == [queue_item_a]