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modules/purchase/tests/scenario_purchase_modify_header.rst

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+===============================
+Purchase 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('purchase', create_company, create_chart)
+
+Get accounts::
+
+    >>> accounts = get_accounts()
+    >>> expense = accounts['expense']
+
+Create tax and tax rule::
+
+    >>> tax = create_tax(Decimal('.10'))
+    >>> tax.save()
+
+    >>> TaxRule = Model.get('account.tax.rule')
+    >>> foreign = TaxRule(name='Foreign Suppliers')
+    >>> no_tax = foreign.lines.new()
+    >>> no_tax.origin_tax = tax
+    >>> foreign.save()
+
+Create account categories::
+
+    >>> ProductCategory = Model.get('product.category')
+    >>> account_category = ProductCategory(name="Account Category")
+    >>> account_category.accounting = True
+    >>> account_category.account_expense = expense
+    >>> account_category.supplier_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.purchasable = True
+    >>> template.list_price = Decimal('10')
+    >>> template.account_category = account_category
+    >>> template.save()
+    >>> product, = template.products
+
+Create parties::
+
+    >>> Party = Model.get('party.party')
+    >>> supplier = Party(name='Supplier')
+    >>> supplier.save()
+    >>> another = Party(name='Another Supplier', supplier_tax_rule=foreign)
+    >>> another.save()
+
+Create a sale with a line::
+
+    >>> Purchase = Model.get('purchase.purchase')
+    >>> purchase = Purchase()
+    >>> purchase.party = supplier
+    >>> purchase_line = purchase.lines.new()
+    >>> purchase_line.product = product
+    >>> purchase_line.quantity = 3
+    >>> purchase_line.unit_price = Decimal('5.0000')
+    >>> purchase_line_comment = purchase.lines.new(type='comment')
+    >>> purchase.save()
+    >>> purchase.untaxed_amount, purchase.tax_amount, purchase.total_amount
+    (Decimal('15.00'), Decimal('1.50'), Decimal('16.50'))
+
+Change the party::
+
+    >>> modify_header = purchase.click('modify_header')
+    >>> assertEqual(modify_header.form.party, supplier)
+    >>> modify_header.form.party = another
+    >>> modify_header.execute('modify')
+
+    >>> purchase.party.name
+    'Another Supplier'
+    >>> purchase.untaxed_amount, purchase.tax_amount, purchase.total_amount
+    (Decimal('15.00'), Decimal('0'), Decimal('15.00'))