===================
Sale Stock Quantity
===================

Imports::

    >>> import datetime as dt
    >>> from decimal import Decimal

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

    >>> today = dt.date.today()
    >>> later = today + dt.timedelta(days=2)

Activate modules::

    >>> config = activate_modules(
    ...     ['sale_stock_quantity', 'stock_supply'],
    ...     create_company, create_chart)

    >>> Warning = Model.get('res.user.warning')

Create fiscal year::

    >>> fiscalyear = set_fiscalyear_invoice_sequences(
    ...     create_fiscalyear(today=(today, later)))
    >>> fiscalyear.click('create_period')

Get accounts::

    >>> accounts = get_accounts()
    >>> revenue = accounts['revenue']
    >>> expense = accounts['expense']

Create parties::

    >>> Party = Model.get('party.party')
    >>> customer = Party(name='Customer')
    >>> customer.save()
    >>> supplier = Party(name='Supplier')
    >>> supplier.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.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 = 'goods'
    >>> template.purchasable = True
    >>> template.salable = True
    >>> template.list_price = Decimal('10')
    >>> template.account_category = account_category
    >>> template.save()
    >>> product, = template.products

    >>> ProductSupplier = Model.get('purchase.product_supplier')
    >>> product_supplier = ProductSupplier()
    >>> product_supplier.template = template
    >>> product_supplier.party = supplier
    >>> product_supplier.lead_time = dt.timedelta(3)
    >>> product_supplier.save()

Create payment term::

    >>> payment_term = create_payment_term()
    >>> payment_term.save()

Create an Inventory of 5 products::

    >>> Inventory = Model.get('stock.inventory')
    >>> Location = Model.get('stock.location')
    >>> storage, = Location.find([
    ...         ('code', '=', 'STO'),
    ...         ])
    >>> inventory = Inventory()
    >>> inventory.location = storage
    >>> inventory_line = inventory.lines.new(product=product)
    >>> inventory_line.quantity = 5.0
    >>> inventory_line.expected_quantity = 0.0
    >>> inventory.click('confirm')
    >>> inventory.state
    'done'

Sale 3 products with enough stock::

    >>> Sale = Model.get('sale.sale')
    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 3.0
    >>> len(sale_line.notifications())
    0
    >>> sale.click('quote')

Sale 1 product with still enough stock::

    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 1.0
    >>> len(sale_line.notifications())
    0
    >>> sale.click('quote')

Sale 2 more products with not enough stock::

    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 2.0
    >>> len(sale_line.notifications())
    0
    >>> sale.click('quote')
    Traceback (most recent call last):
        ...
    StockQuantityWarning: ...

Clean sales::

    >>> Sale.click(Sale.find([]), 'draft')
    >>> Sale.delete(Sale.find([]))

Sale 6 products with not enough stock::

    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 6.0
    >>> len(sale_line.notifications())
    1
    >>> sale.click('quote')
    Traceback (most recent call last):
        ...
    StockQuantityWarning: ...
    >>> sale.delete()

Make an inventory of 3 products in 2 days::

    >>> inventory = Inventory()
    >>> inventory.location = storage
    >>> inventory.date = later
    >>> inventory_line = inventory.lines.new(product=product)
    >>> inventory_line.quantity = 3.0
    >>> inventory_line.expected_quantity = 5.0
    >>> try:
    ...     inventory.click('confirm')
    ... except MoveFutureWarning as warning:
    ...     Warning(user=config.user, name=warning.name).save()
    >>> inventory.click('confirm')
    >>> inventory.state
    'done'

Sale 4 products with not enough forecast::

    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 4.0
    >>> sale.click('quote')
    Traceback (most recent call last):
        ...
    StockQuantityWarning: ...
    >>> sale.delete()

Sale 2 products with enough forecast::

    >>> sale = Sale()
    >>> sale.party = customer
    >>> sale.payment_term = payment_term
    >>> sale_line = sale.lines.new()
    >>> sale_line.product = product
    >>> sale_line.quantity = 2.0
    >>> sale.click('quote')
    >>> sale.click('draft')
    >>> sale.delete()