conservancy_beancount/tests/test_data_balance_of.py

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"""Test data.balance_of function"""
# Copyright © 2020 Brett Smith
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from decimal import Decimal
from operator import methodcaller
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import pytest
from . import testutil
from conservancy_beancount import data
is_cash_eq = data.Account.is_cash_equivalent
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@pytest.fixture
def payable_payment_txn():
return testutil.Transaction(postings=[
('Liabilities:Payable:Accounts', 50),
('Assets:Checking', -50),
('Expenses:BankingFees', 5),
('Assets:Checking', -5),
])
def balance_under(txn, *accts):
pred = methodcaller('is_under', *accts)
return data.balance_of(txn, pred)
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def test_balance_of_simple_txn():
txn = testutil.Transaction(postings=[
('Assets:Cash', 50),
('Income:Donations', -50),
])
assert balance_under(txn, 'Assets') == 50
assert balance_under(txn, 'Income') == -50
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def test_zero_balance_of(payable_payment_txn):
assert balance_under(payable_payment_txn, 'Equity') == 0
assert balance_under(payable_payment_txn, 'Assets:Cash') == 0
assert balance_under(payable_payment_txn, 'Liabilities:CreditCard') == 0
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def test_nonzero_balance_of(payable_payment_txn):
assert balance_under(payable_payment_txn, 'Assets', 'Expenses') == -50
assert balance_under(payable_payment_txn, 'Assets', 'Liabilities') == -5
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def test_multiarg_balance_of():
txn = testutil.Transaction(postings=[
('Liabilities:CreditCard', 650),
('Expenses:BankingFees', 5),
('Assets:Checking', -655),
])
assert data.balance_of(txn, is_cash_eq, data.Account.is_credit_card) == -5
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def test_balance_of_multipost_txn(payable_payment_txn):
assert data.balance_of(payable_payment_txn, is_cash_eq) == -55