def test_remove_by_value():
collection = CoinCollection(20, 20, 10)
removed = collection.remove_by_value(0.50)
assert removed == [0.20, 0.20, 0.10]
def test_creating_collection_from_value():
assert CoinCollection.from_value(1.25) == CoinCollection(100, 20, 5)
def test_coin_collections_are_equal():
assert CoinCollection(1, 2) == CoinCollection(1, 2)
def test_collection_equal_to_list():
assert CoinCollection(1, 2, 3) == [1, 2, 3]
def test_removing_coins_from_collection():
collection = CoinCollection(1, 2)
collection.remove(1)
assert collection == CoinCollection(2)
def test_extending_collection():
collection = CoinCollection(1, 2)
collection.extend([3, 4])
assert collection == CoinCollection(1, 2, 3, 4)
def test_appending_to_collection():
collection = CoinCollection(1, 2)
collection.append(3)
assert collection == CoinCollection(1, 2, 3)