def test_create_transaction():
bc = Blockchain()
bc.new_transaction('a', 'b', 1)
transaction = bc.current_transactions[-1]
assert transaction
assert transaction['sender'] == 'a'
assert transaction['recipient'] == 'b'
assert transaction['amount'] == 1
def test_resets_current_transactions_when_mined():
bc = Blockchain()
bc.new_transaction('a', 'b', 1)
initial_length = len(bc.current_transactions)
bc.new_block(123, 'abc')
current_length = len(bc.current_transactions)
assert initial_length == 1
assert current_length == 0
def one_transaction():
bc = Blockchain()
bc.new_transaction('a', 'b', 1)