add test case for changing join_date

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Member change date

==================

Imports::

    >>> import datetime

    >>> from dateutil.relativedelta import relativedelta

    >>> from decimal import Decimal

    >>> from operator import attrgetter

    >>> from proteus import Model, Wizard

    >>> from trytond.tests.tools import activate_modules

    >>> from trytond.modules.company.tests.tools import create_company, \

    ...     get_company

    >>> from trytond.modules.account.tests.tools import create_fiscalyear, \

    ...     create_chart, get_accounts, create_tax, create_tax_code

    >>> from trytond.modules.association.tests.tools import create_period

    >>> from decimal import *

    >>> today = datetime.date.today()

Install association::

    >>> config = activate_modules('association')

Create company::

    >>> _ = create_company()

    >>> company = get_company()

Create fiscal year::

    >>> fiscalyear = create_fiscalyear(company)

    >>> fiscalyear.click('create_period')

    >>> period = fiscalyear.periods[0]

Create chart of accounts::

    >>> _ = create_chart(company)

    >>> accounts = get_accounts(company)

    >>> receivable = accounts['receivable']

    >>> payable = accounts['payable']

    >>> revenue = accounts['revenue']

    >>> expense = accounts['expense']

    >>> account_tax = accounts['tax']

    >>> account_cash = accounts['cash']

Create party::

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

    >>> party = Party(name='Party')

    >>> party.account_payable = payable

    >>> party.account_receivable = receivable

    >>> party.save()

Create member::

   >>> Member = Model.get('association.member')

   >>> member = Member()

   >>> member.party = party

   >>> member.save()

Get a revenue journal::

   >>> Journal = Model.get('account.journal')

   >>> journal_revenue, = Journal.find([

   ...         ('code', '=', 'REV'),

   ...         ])

Create memberships::

   >>> def periodgen(startDate,deltaTime,quantity):

   ...   firstDate = startDate

   ...   for period in range(quantity):

   ...      lastDate = firstDate + deltaTime

   ...      yield (firstDate,lastDate)

   ...      firstDate = lastDate + datetime.timedelta(days=1)

   >>> start_date = datetime.date(2018,1,1)

   >>> fiscalMonth = 13

   >>> timedelta = datetime.timedelta(weeks=4)

   >>> Membership = Model.get('association.membership.type')

   >>> Period = Model.get('association.membership.period')

   >>> membership1 = Membership()

   >>> membership1.party = party

   >>> membership1.name = "membership1"

   >>> membership1.account_revenue = revenue

   >>> membership1.journal = journal_revenue

   >>> periods1 = []

   >>> for period in periodgen(start_date,timedelta,fiscalMonth):

   ...   newPeriod = membership1.periods.new(

   ...      start_date=period[0],

   ...      end_date=period[1],

   ...      name="test",

   ...      amount=Decimal(42))

   ...   periods1.append(newPeriod)

   >>> membership1.save()

Add membership to member::

   >>> _ = member.memberships.new(

   ...   membership_type=membership1,

   ...   )

   >>> member.save()

Enroll member::

   >>> member.join_date = start_date + datetime.timedelta(weeks=10)

   >>> member.save()

   >>> member.click("run")

Create fee lines::

   >>> Fee = Model.get('association.membership.fee')

   >>> create_fee = Wizard('association.membership.fee_create')

   >>> create_fee.form.date = start_date + datetime.timedelta(weeks=40)

   >>> create_fee.execute('create_')

   >>> len(Fee.find([])) > 0

   True

Create fee after change date::

   >>> before_fees = set(Fee.find([]))

   >>> member.click("draft")

   >>> new_date = start_date - datetime.timedelta(weeks=10)

   >>> member.join_date = new_date

   >>> member.save()

   >>> member.click("run")

   >>> create_fee = Wizard('association.membership.fee_create')

   >>> create_fee.form.date = start_date + datetime.timedelta(weeks=40)

   >>> create_fee.execute('create_')

   >>> after_fees = set(Fee.find([]))

   >>> newfees = after_fees - before_fees

   >>> all(map(lambda x: x.period.start_date >= new_date, newfees))

   True

                             encoding='utf-8',

                             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE,

                             checker=doctest_checker))

    suite.addTests(

        doctest.DocFileSuite('scenario_member_change_date.rst',

                             tearDown=doctest_teardown,

                             encoding='utf-8',

                             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE,

                             checker=doctest_checker))

    return suite