out_file: BinaryIO,

                 date: Optional[datetime.date]=None,

    ) -> None:

        if date is None:

            date = datetime.date.today()

        self.out_bin = out_file

        self.logger = logger.getChild(type(self).__name__)

        self.ods = AgingODS(rt_wrapper, date, self.logger)

    def run(self, groups: PostGroups) -> None:

        rows: List[AccrualPostings] = []

        for group in groups.values():

            if group.is_zero():

                # Cheap optimization: don't slice and dice groups we're not

                # going to report anyway.

                continue

            elif group.accrual_type is None:

                group = group.since_last_nonzero()

            else:

                # Filter out new accruals after the report date.

                # e.g., cover the case that the same invoices has multiple

                # postings over time, and we don't want to report too-recent

                # ones.

                cutoff_date = self.ods.date - datetime.timedelta(

                    days=group.accrual_type.value.aging_thresholds[-1],

                )

                group = AccrualPostings(

                    post for post in group.since_last_nonzero()

                    if post.meta.date <= cutoff_date

                    or group.accrual_type.normalize_amount(post.units.number) < 0

                )

            if group and not group.is_zero():

                rows.append(group)

        rows.sort(key=lambda related: (

            related.account,

            related[0].meta.date,

            ('\0'.join(related.entities())

             if related.entity is related.INCONSISTENT

             else related.entity),

        ))

        self.ods.write(rows)

        self.ods.save_file(self.out_bin)

class BalanceReport(BaseReport):

    def _report(self, posts: AccrualPostings, index: int) -> Iterable[str]:

        posts = posts.since_last_nonzero()

        date_s = posts[0].meta.date.strftime('%Y-%m-%d')

        if index:

            yield ""

        yield f"{posts.invoice}:"

class OutgoingReport(BaseReport):

    def __init__(self, rt_wrapper: rtutil.RT, out_file: TextIO) -> None:

        super().__init__(out_file)

        self.rt_wrapper = rt_wrapper

        self.rt_client = rt_wrapper.rt

    def _primary_rt_id(self, posts: AccrualPostings) -> rtutil.TicketAttachmentIds:

        rt_id = posts.rt_id

        if rt_id is None:

            raise ValueError("no rt-id links found")

        elif isinstance(rt_id, Sentinel):

            raise ValueError("multiple rt-id links found")

        parsed = rtutil.RT.parse(rt_id)

        if parsed is None:

            raise ValueError("rt-id is not a valid RT reference")

        else:

            return parsed

    def _report(self, posts: AccrualPostings, index: int) -> Iterable[str]:

        posts = posts.since_last_nonzero()

        try:

            ticket_id, _ = self._primary_rt_id(posts)

            ticket = self.rt_client.get_ticket(ticket_id)

            # Note we only use this when ticket is None.

            errmsg = f"ticket {ticket_id} not found"

        except (ValueError, rt.RtError) as error:

            ticket = None

            errmsg = error.args[0]

        if ticket is None:

            self.logger.error(

                "can't generate outgoings report for %s because no RT ticket available: %s",

                posts.invoice, errmsg,

            )

            return

        try:

            rt_requestor = self.rt_client.get_user(ticket['Requestors'][0])

        except (IndexError, rt.RtError):

            rt_requestor = None

        if rt_requestor is None:

            requestor = ''

            requestor_name = ''

        else:

            requestor_name = (

                rt_requestor.get('RealName')

                or ticket.get('CF.{payment-to}')

    def __iter__(self) -> Iterator[str]:

        return iter(self._currency_map)

    def __len__(self) -> int:

        return len(self._currency_map)

    def _all_amounts(self,

                     op_func: Callable[[DecimalCompat, DecimalCompat], bool],

                     operand: DecimalCompat,

    ) -> bool:

        return all(op_func(amt.number, operand) for amt in self.values())

    def copy(self: BalanceType, tolerance: Optional[Decimal]=None) -> BalanceType:

        if tolerance is None:

            tolerance = self.tolerance

        return type(self)(self.values(), tolerance)

    def clean_copy(self: BalanceType, tolerance: Optional[Decimal]=None) -> BalanceType:

        if tolerance is None:

            tolerance = self.tolerance

        return type(self)(

            (amount for amount in self.values() if abs(amount.number) >= tolerance),

            tolerance,

        )

    @staticmethod

    def within_tolerance(dec: DecimalCompat, tolerance: DecimalCompat) -> bool:

        dec = cast(Decimal, dec)

        return abs(dec) < tolerance

    def eq_zero(self) -> bool:

        """Returns true if all amounts in the balance == 0, within tolerance."""

        return self._all_amounts(self.within_tolerance, self.tolerance)

    is_zero = eq_zero

    def ge_zero(self) -> bool:

        """Returns true if all amounts in the balance >= 0, within tolerance."""

        op_func = operator.gt if self.tolerance else operator.ge

        return self._all_amounts(op_func, -self.tolerance)

    def le_zero(self) -> bool:

        """Returns true if all amounts in the balance <= 0, within tolerance."""

        op_func = operator.lt if self.tolerance else operator.le

        return self._all_amounts(op_func, self.tolerance)

    def format(self,

               sep: str=', ',

               empty: str="Zero balance",

               tolerance: Optional[Decimal]=None,

    ) -> str:

        """Formats the balance as a string with the given parameters

        as ``fmt``, separated by ``sep``.

        If you set ``fmt`` to None, amounts will be formatted according to the

        user's locale. The default format is Beancount's input format.

        """

            return empty

            return sep.join(

                babel.numbers.format_currency(amt.number, amt.currency, fmt)

                for amt in amounts

            )

class MutableBalance(Balance):

    __slots__ = ()

    def __iadd__(self: BalanceType, other: Union[data.Amount, Balance]) -> BalanceType:

        self._add_other(self._currency_map, other)

        return self

    def __isub__(self: BalanceType, other: Union[data.Amount, Balance]) -> BalanceType:

        self._add_other(self._currency_map, -other)

        return self

class RelatedPostings(Sequence[data.Posting]):

    """Collect and query related postings

    This class provides common functionality for collecting related postings

    and running queries on them: iterating over them, tallying their balance,

    etc.

    This class doesn't know anything about how the postings are related. That's

    entirely up to the caller.

    A common pattern is to use this class with collections.defaultdict

    to organize postings based on some key. See the group_by_meta classmethod

    for an example.

    """

    __slots__ = ('_postings',)

    def __init__(self,

                 source: Iterable[data.Posting]=(),

                 *,

                 _can_own: bool=False,

    ) -> None:

        self._postings: List[data.Posting]

        if _can_own and isinstance(source, list):

            self._postings = source

        else:

            self._postings = list(source)

    @classmethod

    def _group_by(cls: Type[RelatedType],

                  postings: Iterable[data.Posting],

"""test_reports_balance - Unit tests for reports.core.Balance"""

# 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/>.

import itertools

from decimal import Decimal

import pytest

from . import testutil

import babel.numbers

from conservancy_beancount.reports import core

DEFAULT_STRINGS = [

    ({}, "Zero balance"),

    ({'USD': '20.00'}, "20.00 USD"),

    ({'EUR': '50.00', 'GBP': '80.00'}, "80.00 GBP, 50.00 EUR"),

    ({'JPY': '-5500.00', 'BRL': '-8500.00'}, "-8,500.00 BRL, -5,500 JPY"),

    ({'USD': 10, 'EUR': '.00015'}, "10.00 USD"),

]

TOLERANCES = [Decimal(n) for n in ['.1', '.01', '.001', 0]]

def amounts_from_map(currency_map):

    for code, number in currency_map.items():

        yield testutil.Amount(number, code)

def test_empty_balance():

    balance = core.Balance()

    assert not balance

    assert len(balance) == 0

    assert balance.is_zero()

    with pytest.raises(KeyError):

        balance['USD']

@pytest.mark.parametrize('currencies', [

    'USD',

    'EUR GBP',

    'JPY INR BRL',

])

def test_zero_balance(currencies):

    keys = currencies.split()

    balance = core.Balance(testutil.Amount(0, key) for key in keys)

    assert balance

    assert len(balance) == len(keys)

    assert balance.is_zero()

    assert all(balance[key].number == 0 for key in keys)

    assert all(balance[key].currency == key for key in keys)

@pytest.mark.parametrize('currencies', [

    'USD',

    'EUR GBP',

    'JPY INR BRL',

])

def test_nonzero_balance(currencies):

    amounts = dict(zip(currencies.split(), itertools.count(110, 100)))

    balance = core.Balance(amounts_from_map(amounts))

    assert balance

    assert len(balance) == len(amounts)

    assert not balance.is_zero()

    assert all(balance[key] == testutil.Amount(amt, key) for key, amt in amounts.items())

def test_mixed_balance():

    amounts = {'USD': 0, 'EUR': 120}

    balance = core.Balance(amounts_from_map(amounts))

    assert balance

    assert len(balance) == 2

    expect_numbers = {'USD': 500, 'BRL': 40000}

    balance = core.MutableBalance(amounts_from_map(expect_numbers))

    for code, number in mapping.items():

        expect_numbers[code] = expect_numbers.get(code, 0) + number

    balance += core.Balance(amounts_from_map(mapping))

    expected = core.Balance(amounts_from_map(expect_numbers))

    assert balance == expected

def test_copy():

    amounts = frozenset(amounts_from_map({'USD': 10, 'EUR': '.001'}))

    # Use a ridiculous tolerance to test it doesn't matter.

    actual = core.Balance(amounts, 100).copy()

    assert frozenset(actual.values()) == amounts

@pytest.mark.parametrize('tolerance', TOLERANCES)

def test_clean_copy(tolerance):

    usd = testutil.Amount(10)

    eur = testutil.Amount('.002', 'EUR')

    actual = core.Balance([usd, eur], tolerance).clean_copy()

    if tolerance < eur.number:

        expected = {usd, eur}

    else:

        expected = {usd}

    assert frozenset(actual.values()) == expected

@pytest.mark.parametrize('tolerance', TOLERANCES)

def test_clean_copy_arg(tolerance):

    usd = testutil.Amount(10)

    eur = testutil.Amount('.002', 'EUR')

    actual = core.Balance([usd, eur], 0).clean_copy(tolerance)

    if tolerance < eur.number:

        expected = {usd, eur}

    else:

        expected = {usd}

    assert frozenset(actual.values()) == expected

@pytest.mark.parametrize('mapping,expected', DEFAULT_STRINGS)

def test_str(mapping, expected):

    balance = core.Balance(amounts_from_map(mapping))

    assert str(balance) == expected

@pytest.mark.parametrize('mapping,expected', DEFAULT_STRINGS)

def test_format_defaults(mapping, expected):

    balance = core.Balance(amounts_from_map(mapping))

    assert balance.format() == expected

@pytest.mark.parametrize('fmt,expected', [

    ('¤##0.0', '¥5000, -€1500.00'),

    ('¤+##0.0;¤-##0.0', '¥+5000, €-1500.00'),

])

def test_format_fmt(fmt, expected):

    amounts = [testutil.Amount(5000, 'JPY'), testutil.Amount(-1500, 'EUR')]

    balance = core.Balance(amounts)

    assert balance.format(fmt) == expected

@pytest.mark.parametrize('sep', [

    '; ',

    '—',

    '\0',

])

def test_format_sep(sep):

    mapping, expected = DEFAULT_STRINGS[-1]

    expected = expected.replace(', ', sep)

    balance = core.Balance(amounts_from_map(mapping))

    assert balance.format(sep=sep) == expected

def test_format_none():

    args = (65000, 'BRL')

    balance = core.Balance([testutil.Amount(*args)])

    expected = babel.numbers.format_currency(*args)

    assert balance.format(None) == expected

@pytest.mark.parametrize('empty', [

    "N/A",

    "Zero",

    "ø",

])

def test_format_empty(empty):

    balance = core.Balance()

    assert balance.format(empty=empty) == empty

@pytest.mark.parametrize('tolerance', TOLERANCES)

    chf = testutil.Amount('.005', 'CHF')

    if tolerance > chf.number:

    else: