315 lines
13 KiB
Python
315 lines
13 KiB
Python
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from datetime import date, timedelta
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from decimal import Decimal
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import pytest
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from app import journal, ledger
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from app.models import KIND_FRIEND, KIND_GIFT, KIND_RETAIL, KIND_SELF
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def line(product, qty, price):
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return {"product_id": product.id, "qty": qty, "unit_price": price}
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def buy(product, qty, cost):
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return {"product_id": product.id, "qty": qty, "unit_cost": cost}
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# --- Сценарий из постановки задачи ----------------------------------------
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@pytest.fixture
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def scenario(vault, buns, today, in_two_weeks):
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"""Ровно то, что описал пользователь.
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Пришёл в пекарню, взял 5 булок с повидлом, 10 с маком, 20 с корицей.
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Часть продал, часть отдал другу в долг по себестоимости, пару съел сам.
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"""
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batch = journal.create_batch(
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vault,
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today,
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in_two_weeks,
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[buy(buns["повидло"], 5, 30), buy(buns["мак"], 10, 20), buy(buns["корица"], 20, 25)],
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)
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vasya = journal.create_counterparty(vault, "Вася")
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journal.create_sale(vault, today, KIND_RETAIL, [line(buns["повидло"], 3, 50)])
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journal.create_sale(
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vault, today, KIND_FRIEND, [line(buns["мак"], 5, 20)],
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counterparty_id=vasya.id, paid_amount=0,
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)
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journal.create_sale(vault, today, KIND_SELF, [line(buns["корица"], 2, 0)])
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return {"vault": vault, "batch": batch, "vasya": vasya, "buns": buns}
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def test_batch_debt_is_the_purchase_cost(scenario, today):
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report = ledger.build(scenario["vault"].doc, today)
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batch = report.batch_report(scenario["batch"].id)
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# 5×30 + 10×20 + 20×25
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assert batch.cost_total == Decimal("850.00")
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assert batch.remaining_to_bakery == Decimal("850.00")
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def test_only_actually_received_money_counts_as_coverage(scenario, today):
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"""Долг Васи не покрывает партию: пекарне нужны деньги, а не начисления."""
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report = ledger.build(scenario["vault"].doc, today)
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batch = report.batch_report(scenario["batch"].id)
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assert batch.revenue == Decimal("250.00") # 150 продажа + 100 долг Васи
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assert batch.cash_collected == Decimal("150.00")
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assert batch.still_to_collect == Decimal("700.00")
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assert batch.coverage_pct == Decimal("17.65")
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def test_self_consumed_buns_are_a_loss_against_margin(scenario, today):
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summary = ledger.build(scenario["vault"].doc, today).summary
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assert summary.gross_margin == Decimal("60.00") # 3 × (50 − 30)
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assert summary.consumed_cost == Decimal("50.00") # 2 корицы × 25
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assert summary.profit == Decimal("10.00")
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def test_stock_and_receivables(scenario, today):
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report = ledger.build(scenario["vault"].doc, today)
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batch = report.batch_report(scenario["batch"].id)
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assert batch.qty_sold == Decimal("10.000")
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assert batch.qty_left == Decimal("25.000")
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# 2×30 + 5×20 + 18×25
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assert report.summary.stock_cost == Decimal("610.00")
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assert report.summary.receivable == Decimal("100.00")
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assert [(d.name, d.debt) for d in report.debtors] == [("Вася", Decimal("100.00"))]
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def test_paying_the_bakery_closes_the_batch(scenario, today):
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vault = scenario["vault"]
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journal.add_bakery_payment(vault, 850, batch_id=scenario["batch"].id)
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batch = ledger.build(vault.doc, today).batch_report(scenario["batch"].id)
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assert batch.remaining_to_bakery == 0
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assert batch.status == ledger.STATUS_SETTLED
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assert ledger.build(vault.doc, today).summary.owed_to_bakery == 0
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# --- FIFO по партиям ------------------------------------------------------
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def test_sale_spills_from_the_older_batch_into_the_newer(vault, buns, today):
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"""Привязка выручки к партии — единственная причина считать FIFO."""
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old = journal.create_batch(
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vault, today - timedelta(days=10), today + timedelta(days=4),
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[buy(buns["мак"], 10, 20)],
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)
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new = journal.create_batch(
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vault, today - timedelta(days=1), today + timedelta(days=13),
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[buy(buns["мак"], 10, 20)],
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)
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journal.create_sale(vault, today, KIND_RETAIL, [line(buns["мак"], 14, 35)])
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report = ledger.build(vault.doc, today)
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assert report.batch_report(old.id).qty_sold == Decimal("10.000")
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assert report.batch_report(new.id).qty_sold == Decimal("4.000")
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assert report.batch_report(old.id).cash_collected == Decimal("350.00") # 10 × 35
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assert report.batch_report(new.id).cash_collected == Decimal("140.00") # 4 × 35
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def test_batch_order_follows_date_not_entry_order(vault, buns, today):
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later = journal.create_batch(
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vault, today, today + timedelta(days=14), [buy(buns["мак"], 5, 20)]
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)
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earlier = journal.create_batch(
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vault, today - timedelta(days=5), today + timedelta(days=9), [buy(buns["мак"], 5, 20)]
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)
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journal.create_sale(vault, today, KIND_RETAIL, [line(buns["мак"], 5, 35)])
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report = ledger.build(vault.doc, today)
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assert report.batch_report(earlier.id).qty_sold == Decimal("5.000")
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assert report.batch_report(later.id).qty_sold == 0
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def test_allocation_is_deterministic(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
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for _ in range(3):
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journal.create_sale(vault, today, KIND_RETAIL, [line(buns["мак"], 2, 35)])
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first = ledger.build(vault.doc, today).allocations
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second = ledger.build(vault.doc, today).allocations
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assert [(a.sale_id, a.batch_id, a.qty) for a in first] == [
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(a.sale_id, a.batch_id, a.qty) for a in second
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]
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def test_selling_more_than_bought_warns_instead_of_crashing(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 5, 20)])
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journal.create_sale(vault, today, KIND_RETAIL, [line(buns["мак"], 8, 35)])
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report = ledger.build(vault.doc, today)
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assert [(s.product_id, s.qty) for s in report.shortfalls] == [
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(buns["мак"].id, Decimal("3.000"))
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]
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assert any("больше" in w for w in report.warnings)
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# --- Частичная оплата -----------------------------------------------------
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def test_partial_payment_counts_proportionally(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
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sale = journal.create_sale(
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vault, today, KIND_RETAIL, [line(buns["мак"], 10, 35)], paid_amount=0
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)
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journal.add_sale_payment(vault, sale.id, 140) # 40% от 350
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report = ledger.build(vault.doc, today)
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assert report.batches[0].revenue == Decimal("350.00")
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assert report.batches[0].cash_collected == Decimal("140.00")
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assert report.summary.receivable == Decimal("210.00")
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def test_paying_off_the_debt_completes_coverage(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
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sale = journal.create_sale(
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vault, today, KIND_RETAIL, [line(buns["мак"], 10, 35)], paid_amount=0
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)
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journal.add_sale_payment(vault, sale.id, 350)
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report = ledger.build(vault.doc, today)
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assert report.batches[0].cash_collected == Decimal("350.00")
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assert report.summary.receivable == 0
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assert report.debtors == []
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# --- Платежи пекарне ------------------------------------------------------
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def test_unassigned_payment_pays_the_oldest_batch_first(vault, buns, today):
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old = journal.create_batch(
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vault, today - timedelta(days=10), today + timedelta(days=4), [buy(buns["мак"], 10, 20)]
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)
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new = journal.create_batch(
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vault, today, today + timedelta(days=14), [buy(buns["мак"], 10, 20)]
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)
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journal.add_bakery_payment(vault, 250) # 200 закрывают старую, 50 идут в новую
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report = ledger.build(vault.doc, today)
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assert report.batch_report(old.id).remaining_to_bakery == 0
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assert report.batch_report(new.id).remaining_to_bakery == Decimal("150.00")
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def test_overpaying_one_batch_spills_over_instead_of_going_negative(vault, buns, today):
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first = journal.create_batch(
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vault, today - timedelta(days=5), today + timedelta(days=9), [buy(buns["мак"], 5, 20)]
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)
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second = journal.create_batch(
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vault, today, today + timedelta(days=14), [buy(buns["мак"], 5, 20)]
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)
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journal.add_bakery_payment(vault, 180, batch_id=first.id) # партия стоит всего 100
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report = ledger.build(vault.doc, today)
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assert report.batch_report(first.id).remaining_to_bakery == 0
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assert report.batch_report(second.id).remaining_to_bakery == Decimal("20.00")
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def test_paying_more_than_everything_is_reported_as_advance(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 5, 20)])
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journal.add_bakery_payment(vault, 300)
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report = ledger.build(vault.doc, today)
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assert report.unassigned_bakery_payment == Decimal("200.00")
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assert report.summary.owed_to_bakery == 0
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assert any("аванс" in w for w in report.warnings)
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# --- Статусы и дедлайны ---------------------------------------------------
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def test_status_open(vault, buns, today):
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journal.create_batch(vault, today, today + timedelta(days=14), [buy(buns["мак"], 5, 20)])
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assert ledger.build(vault.doc, today).batches[0].status == ledger.STATUS_OPEN
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def test_status_due_soon(vault, buns, today):
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journal.create_batch(vault, today, today + timedelta(days=2), [buy(buns["мак"], 5, 20)])
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report = ledger.build(vault.doc, today).batches[0]
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assert report.status == ledger.STATUS_DUE_SOON
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assert report.days_left == 2
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def test_status_overdue(vault, buns, today):
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journal.create_batch(
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vault, today - timedelta(days=20), today - timedelta(days=1), [buy(buns["мак"], 5, 20)]
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)
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report = ledger.build(vault.doc, today)
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assert report.batches[0].status == ledger.STATUS_OVERDUE
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assert report.summary.overdue_count == 1
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def test_manually_closed_batch_is_settled_even_if_unpaid(vault, buns, today, in_two_weeks):
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"""Иногда с пекарней договариваются на словах — учёт не должен спорить."""
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batch = journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 5, 20)])
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journal.set_batch_closed(vault, batch.id, True)
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assert ledger.build(vault.doc, today).batches[0].status == ledger.STATUS_SETTLED
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def test_next_due_picks_the_nearest_open_deadline(vault, buns, today):
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journal.create_batch(vault, today, today + timedelta(days=14), [buy(buns["мак"], 5, 20)])
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urgent = journal.create_batch(vault, today, today + timedelta(days=2), [buy(buns["мак"], 5, 20)])
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summary = ledger.build(vault.doc, today).summary
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assert summary.next_due.batch.id == urgent.id
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def test_settled_batches_are_not_offered_as_next_due(vault, buns, today):
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urgent = journal.create_batch(vault, today, today + timedelta(days=1), [buy(buns["мак"], 5, 20)])
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later = journal.create_batch(vault, today, today + timedelta(days=20), [buy(buns["мак"], 5, 20)])
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journal.add_bakery_payment(vault, 100, batch_id=urgent.id)
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summary = ledger.build(vault.doc, today).summary
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assert summary.next_due.batch.id == later.id
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# --- Прочее ---------------------------------------------------------------
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def test_gifts_count_as_consumption_not_revenue(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
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journal.create_sale(vault, today, KIND_GIFT, [line(buns["мак"], 3, 0)])
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summary = ledger.build(vault.doc, today).summary
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assert summary.revenue == 0
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assert summary.consumed_cost == Decimal("60.00")
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assert summary.profit == Decimal("-60.00")
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def test_friend_price_yields_no_margin(vault, buns, today, in_two_weeks):
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journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
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journal.create_sale(vault, today, KIND_FRIEND, [line(buns["мак"], 10, 20)])
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summary = ledger.build(vault.doc, today).summary
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assert summary.cash_collected == Decimal("200.00")
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assert summary.gross_margin == 0
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assert summary.profit == 0
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def test_debts_without_counterparty_are_grouped_separately(vault, buns, today, in_two_weeks):
|
|||
|
|
journal.create_batch(vault, today, in_two_weeks, [buy(buns["мак"], 10, 20)])
|
|||
|
|
journal.create_sale(vault, today, KIND_RETAIL, [line(buns["мак"], 2, 35)], paid_amount=0)
|
|||
|
|
|
|||
|
|
debtors = ledger.build(vault.doc, today).debtors
|
|||
|
|
assert [(d.name, d.debt) for d in debtors] == [("Без контрагента", Decimal("70.00"))]
|
|||
|
|
|
|||
|
|
|
|||
|
|
def test_empty_database_reports_zeroes(vault, today):
|
|||
|
|
report = ledger.build(vault.doc, today)
|
|||
|
|
assert report.summary.owed_to_bakery == 0
|
|||
|
|
assert report.summary.profit == 0
|
|||
|
|
assert report.summary.next_due is None
|
|||
|
|
assert report.warnings == []
|
|||
|
|
|
|||
|
|
|
|||
|
|
def test_stock_lists_products_with_remaining_quantity(scenario, today):
|
|||
|
|
rows = {r.name: r.qty for r in ledger.build(scenario["vault"].doc, today).stock}
|
|||
|
|
assert rows["Булка с повидлом"] == Decimal("2.000")
|
|||
|
|
assert rows["Булка с маком"] == Decimal("5.000")
|
|||
|
|
assert rows["Булка с корицей"] == Decimal("18.000")
|