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modules/sale/tests/scenario_sale_modify_header.rst

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+===========================
+Sale Modify Header Scenario
+===========================
+
+Imports::
+
+    >>> from decimal import Decimal
+
+    >>> from proteus import Model
+    >>> from trytond.modules.account.tests.tools import (
+    ...     create_chart, create_tax, get_accounts)
+    >>> from trytond.modules.company.tests.tools import create_company
+    >>> from trytond.tests.tools import activate_modules, assertEqual
+
+Activate modules::
+
+    >>> config = activate_modules('sale', create_company, create_chart)
+
+Get accounts::
+
+    >>> accounts = get_accounts()
+    >>> revenue = accounts['revenue']
+
+Create tax and tax rule::
+
+    >>> tax = create_tax(Decimal('.10'))
+    >>> tax.save()
+    >>> other_tax = create_tax(Decimal('.05'))
+    >>> other_tax.save()
+
+    >>> TaxRule = Model.get('account.tax.rule')
+    >>> foreign = TaxRule(name='Foreign Customers')
+    >>> foreign_tax = foreign.lines.new()
+    >>> foreign_tax.origin_tax = tax
+    >>> foreign_tax.tax = other_tax
+    >>> foreign.save()
+
+Create account categories::
+
+    >>> ProductCategory = Model.get('product.category')
+    >>> account_category = ProductCategory(name="Account Category")
+    >>> account_category.accounting = True
+    >>> 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 = 'goods'
+    >>> template.salable = True
+    >>> template.list_price = Decimal('10')
+    >>> template.account_category = account_category
+    >>> template.save()
+    >>> product, = template.products
+
+Create parties::
+
+    >>> Party = Model.get('party.party')
+    >>> customer = Party(name='Customer')
+    >>> customer.save()
+    >>> another = Party(name='Another Customer', customer_tax_rule=foreign)
+    >>> another.save()
+
+Create a sale with a line::
+
+    >>> Sale = Model.get('sale.sale')
+    >>> sale = Sale()
+    >>> sale.party = customer
+    >>> sale_line = sale.lines.new()
+    >>> sale_line.product = product
+    >>> sale_line.quantity = 3
+    >>> sale_line_comment = sale.lines.new(type='comment')
+    >>> sale.save()
+    >>> sale.untaxed_amount, sale.tax_amount, sale.total_amount
+    (Decimal('30.00'), Decimal('3.00'), Decimal('33.00'))
+
+Change the party::
+
+    >>> modify_header = sale.click('modify_header')
+    >>> assertEqual(modify_header.form.party, customer)
+    >>> modify_header.form.party = another
+    >>> modify_header.execute('modify')
+
+    >>> sale.party.name
+    'Another Customer'
+    >>> sale.untaxed_amount, sale.tax_amount, sale.total_amount
+    (Decimal('30.00'), Decimal('1.50'), Decimal('31.50'))