def test_handlerlist_add_multiple():
"""Tests the list order from adding multiple items with different priorities out of order."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
handler_list.add(mock_callback, 3)
handler_list.add(mock_callback, 2)
assert handler_list._list[0] == handler_list.Item(mock_callback, 1)
assert handler_list._list[1] == handler_list.Item(mock_callback, 2)
assert handler_list._list[2] == handler_list.Item(mock_callback, 3)
def test_handlerlist_iteration():
"""Tests iterating over HandlerList items and calling their functions."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
handler_list.add(mock_callback, 2)
handler_list.add(mock_callback, 3)
calls = 0
for function in handler_list:
calls = calls + 1
assert function()
assert calls == 3
def test_handlerlist_remove():
"""Tests removing an item."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
handler_list.add(mock_wrong_callback, 2)
handler_list.remove(mock_callback)
assert len(handler_list) == 1
handler_list.remove(mock_wrong_callback)
assert len(handler_list) == 0
def test_handlerlist_calling_handlers():
"""Tests calling handler functions in the HandlerList."""
handler_list = HandlerList()
handler_list.add(mock_callback, 0)
handler_list.add(mock_wrong_callback, 1)
assert handler_list[0]()
assert not handler_list[1]()
handler_list.add(mock_wrong_callback, 3)
handler_list.add(mock_callback, 2)
assert handler_list[2]()
assert not handler_list[3]()
def test_handlerlist_add_multiple_with_same_priority():
"""Tests the list order from adding multiple items out of order with some items having the same priority."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
handler_list.add(mock_callback, 5)
handler_list.add(mock_callback, 2)
handler_list.add(mock_wrong_callback, 2)
assert handler_list._list[0] == handler_list.Item(mock_callback, 1)
assert handler_list._list[1] == handler_list.Item(mock_callback, 2)
assert handler_list._list[2] == handler_list.Item(mock_wrong_callback, 2)
assert handler_list._list[3] == handler_list.Item(mock_callback, 5)
def test_handlerlist_len():
"""Tests the len function on a HandlerList."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
handler_list.add(mock_callback, 2)
assert len(handler_list) == 2
def test_handlerlist_add():
"""Tests adding an item to a HandlerList."""
handler_list = HandlerList()
handler_list.add(mock_callback, 1)
assert handler_list._list[0] == handler_list.Item(mock_callback, 1)
