====================
Credit Note Scenario
====================

Imports::

    >>> from decimal import Decimal

    >>> from proteus import Model
    >>> from trytond.modules.account.tests.tools import (
    ...     create_chart, create_fiscalyear, create_tax, get_accounts)
    >>> from trytond.modules.account_invoice.tests.tools import (
    ...     set_fiscalyear_invoice_sequences)
    >>> from trytond.modules.company.tests.tools import create_company
    >>> from trytond.tests.tools import activate_modules

Activate modules::

    >>> config = activate_modules('account_invoice', create_company, create_chart)

Create fiscal year::

    >>> fiscalyear = set_fiscalyear_invoice_sequences(
    ...     create_fiscalyear())
    >>> fiscalyear.click('create_period')

Get accounts::

    >>> accounts = get_accounts()
    >>> receivable = accounts['receivable']
    >>> revenue = accounts['revenue']
    >>> expense = accounts['expense']
    >>> account_cash = accounts['cash']

Create tax::

    >>> TaxCode = Model.get('account.tax.code')
    >>> tax = create_tax(Decimal('.10'))
    >>> tax.save()

Create payment method::

    >>> Journal = Model.get('account.journal')
    >>> PaymentMethod = Model.get('account.invoice.payment.method')
    >>> Sequence = Model.get('ir.sequence')
    >>> journal_cash, = Journal.find([('type', '=', 'cash')])
    >>> payment_method = PaymentMethod()
    >>> payment_method.name = 'Cash'
    >>> payment_method.journal = journal_cash
    >>> payment_method.credit_account = account_cash
    >>> payment_method.debit_account = account_cash
    >>> payment_method.save()

Create party::

    >>> Party = Model.get('party.party')
    >>> party = Party(name='Party')
    >>> party.save()

Create account category::

    >>> ProductCategory = Model.get('product.category')
    >>> account_category = ProductCategory(name="Account Category")
    >>> account_category.accounting = True
    >>> account_category.account_expense = expense
    >>> account_category.account_revenue = revenue
    >>> account_category.customer_taxes.append(tax)
    >>> account_category.save()

Create product::

    >>> ProductUom = Model.get('product.uom')
    >>> unit, = ProductUom.find([('name', '=', 'Unit')])
    >>> ProductTemplate = Model.get('product.template')
    >>> template = ProductTemplate()
    >>> template.name = 'product'
    >>> template.default_uom = unit
    >>> template.type = 'service'
    >>> template.list_price = Decimal('40')
    >>> template.account_category = account_category
    >>> template.save()
    >>> product, = template.products

Create credit note::

    >>> Invoice = Model.get('account.invoice')
    >>> invoice = Invoice()
    >>> invoice.party = party
    >>> line = invoice.lines.new()
    >>> line.product = product
    >>> line.quantity = -5
    >>> line.unit_price = Decimal('40')
    >>> invoice.total_amount
    Decimal('-220.00')
    >>> invoice.save()

Post credit note::

    >>> invoice.click('post')
    >>> invoice.state
    'posted'

Pay credit note::

    >>> pay = invoice.click('pay')
    >>> pay.form.amount
    Decimal('-220.00')
    >>> pay.form.amount = Decimal('-120.00')
    >>> pay.form.payment_method = payment_method
    >>> pay.execute('choice')
    >>> pay.form.type = 'partial'
    >>> pay.form.amount
    Decimal('-120.00')
    >>> len(pay.form.lines_to_pay)
    1
    >>> len(pay.form.payment_lines)
    0
    >>> len(pay.form.lines)
    1
    >>> pay.form.amount_writeoff
    Decimal('-100.00')
    >>> pay.execute('pay')
    >>> pay.state
    'end'

    >>> pay = invoice.click('pay')
    >>> pay.form.amount
    Decimal('-100.00')
    >>> pay.form.amount = Decimal('-100.00')
    >>> pay.form.payment_method = payment_method
    >>> pay.execute('choice')
    >>> invoice.state
    'paid'
    >>> sorted(l.debit for l in invoice.reconciliation_lines)
    [Decimal('100.00'), Decimal('120.00')]