def test_created_methods(self):
        # Payment.TYPE_IN
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)
        methods = ['bill', 'card', 'check', 'credit', 'deposit',
                   'money', 'multiple', 'store_credit']
        self.assertEqual(set(slave._widgets.keys()), set(methods))

        for method in methods:
            widget = slave._widgets.get(method)
            self.assertTrue(widget.get_visible())

        # Payment.TYPE_OUT
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_OUT)
        methods = ['bill', 'check', 'deposit', 'money']
        self.assertEqual(set(slave._widgets.keys()), set(methods))

        for method in methods:
            widget = slave._widgets.get(method)
            self.assertTrue(widget.get_visible())

        # Only 1 method available
        for method in self.store.find(PaymentMethod,
                                      PaymentMethod.method_name != u'money'):
            method.is_active = False
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)
        self.assertEqual(set(slave._widgets.keys()), set([u'money']))
        self.assertEqual(slave.get_selected_method().method_name, u'money')

    def test_set_client_without_credit_and_store_credit(self):
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)
        client = self.create_client()

        slave.set_client(client, 100)
        self.check_slave(
            slave,
            'slave-select-payment-method-client-without-credit-and-store-credit')

    def test_set_client_with_enough_store_credit(self):
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)
        client = self.create_client()
        client.credit_limit = 100

        slave.set_client(client, 100)
        self.check_slave(
            slave,
            'slave-select-payment-method-client-with-enough-store-credit')

    def test_set_client_with_enough_credit(self):
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)
        client = self.create_client()
        method = self.store.find(PaymentMethod, method_name=u'credit').one()
        payment = self.create_payment(payment_type=Payment.TYPE_OUT,
                                      value=100, method=method)
        payment.group.payer = client.person
        payment.set_pending()
        payment.pay()

        slave.set_client(client, 100)
        self.check_slave(
            slave,
            'slave-select-payment-method-client-with-enough-credit')

    def test_default_method(self):
        method = self.store.find(PaymentMethod, method_name=u'multiple').one()
        with self.sysparam(DEFAULT_PAYMENT_METHOD=method):
            slave = SelectPaymentMethodSlave(store=self.store,
                                             payment_type=Payment.TYPE_IN)
            self.assertEqual(
                slave.get_selected_method().method_name, u'multiple')

            # If the default method is not created (setting is_active to False
            # does the trick), it should fallback to money
            method.is_active = False
            slave = SelectPaymentMethodSlave(store=self.store,
                                             payment_type=Payment.TYPE_IN)
            self.assertEqual(
                slave.get_selected_method().method_name, u'money')

    def setup_slaves(self):
        marker('SelectPaymentMethodSlave')
        self.pm_slave = SelectPaymentMethodSlave(store=self.store,
                                                 payment_type=Payment.TYPE_IN)
        self.pm_slave.connect('method-changed', self.on_payment_method_changed)
        self.attach_slave('select_method_holder', self.pm_slave)

        marker('CashChangeSlave')
        self.cash_change_slave = CashChangeSlave(self.store, self.model, self.wizard)
        self.attach_slave('cash_change_holder', self.cash_change_slave)
        self.cash_change_slave.received_value.connect(
            'activate', lambda entry: self.wizard.go_to_next())

    def test_method_set_sensitive(self):
        inactive = self.store.find(PaymentMethod, method_name=u'bill').one()
        inactive.is_active = False

        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN,
                                         default_method=u'check')
        self.assertEqual(
            slave.get_selected_method().method_name, u'check')

        slave.method_set_sensitive(u'check', False)
        self.assertFalse(slave._widgets[u'check'].get_sensitive())
        self.assertEqual(
            slave.get_selected_method().method_name, u'money')

        # Test when the widget is not there
        slave.method_set_sensitive(u'bill', True)

    def test_init_default_method(self):
        check_method = self.store.find(PaymentMethod,
                                       method_name=u'check').one()
        multiple_method = self.store.find(PaymentMethod,
                                          method_name=u'multiple').one()
        money_method = self.store.find(PaymentMethod,
                                       method_name=u'money').one()

        # Check should be selected here since it was passed as default ethod
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN,
                                         default_method=u'check')
        self.assertEqual(slave.get_selected_method(), check_method)

        with self.sysparam(DEFAULT_PAYMENT_METHOD=multiple_method):
            # Even with multiple as default, the constructor default
            # should overwrite it
            slave = SelectPaymentMethodSlave(store=self.store,
                                             payment_type=Payment.TYPE_IN,
                                             default_method=u'check')
            self.assertEqual(slave.get_selected_method(), check_method)

            # Making check inactive should make the DEFAULT_PAYMENT_METHOD
            # the default one on the slave
            check_method.is_active = False
            slave = SelectPaymentMethodSlave(store=self.store,
                                             payment_type=Payment.TYPE_IN,
                                             default_method=u'check')
            self.assertEqual(slave.get_selected_method(), multiple_method)

            # Making check and the DEFAULT_PAYMENT_METHOD inactive,
            # the default should fallback to money
            multiple_method.is_active = False
            slave = SelectPaymentMethodSlave(store=self.store,
                                             payment_type=Payment.TYPE_IN,
                                             default_method=u'check')
            self.assertEqual(slave.get_selected_method(), money_method)

class PurchasePaymentStep(WizardEditorStep):
    gladefile = 'PurchasePaymentStep'
    model_type = PaymentGroup

    def __init__(self, wizard, previous, store, model,
                 outstanding_value=currency(0)):
        self.order = model
        self.slave = None
        self.discount_surcharge_slave = None
        self.outstanding_value = outstanding_value

        if not model.payments.count():
            # Default values
            self._installments_number = None
            self._first_duedate = None
            self._method = 'bill'
        else:
            # FIXME: SqlObject returns count as long, but we need it as int.
            self._installments_number = int(model.payments.count())
            self._method = model.payments[0].method.method_name

            # due_date is datetime.datetime. Converting it to datetime.date
            due_date = model.payments[0].due_date.date()
            self._first_duedate = (due_date >= localtoday().date() and
                                   due_date or None)

        WizardEditorStep.__init__(self, store, wizard, model.group, previous)

    def _setup_widgets(self):
        register_payment_slaves()

        self._ms = SelectPaymentMethodSlave(store=self.store,
                                            payment_type=Payment.TYPE_OUT,
                                            default_method=self._method,
                                            no_payments=True)
        self._ms.connect_after('method-changed',
                               self._after_method_select__method_changed)

        self.attach_slave('method_select_holder', self._ms)
        self._update_payment_method_slave()

    def _set_method_slave(self):
        """Sets the payment method slave"""
        method = self._ms.get_selected_method()
        if not method:
            return
        domain_mapper = get_utility(IDomainSlaveMapper)
        slave_class = domain_mapper.get_slave_class(method)
        if slave_class:
            self.wizard.payment_group = self.model
            self.slave = slave_class(self.wizard, self,
                                     self.store, self.order, method,
                                     outstanding_value=self.outstanding_value,
                                     first_duedate=self._first_duedate,
                                     installments_number=self._installments_number,
                                     temporary_identifiers=self.wizard.is_for_another_branch())
            self.attach_slave('method_slave_holder', self.slave)

    def _update_payment_method_slave(self):
        """Updates the payment method slave """
        holder_name = 'method_slave_holder'
        if self.get_slave(holder_name):
            self.slave.get_toplevel().hide()
            self.detach_slave(holder_name)
            self.slave = None

        # remove all payments created last time, if any
        self.model.clear_unused()
        if not self.slave:
            self._set_method_slave()

    #
    # WizardStep hooks
    #

    def validate_step(self):
        if self.slave:
            return self.slave.finish()
        return True

    def next_step(self):
        return FinishPurchaseStep(self.store, self.wizard, self.order, self)

    def post_init(self):
        self.model.clear_unused()
        self.main_box.set_focus_chain([self.method_select_holder,
                                       self.method_slave_holder])
        self.register_validate_function(self.wizard.refresh_next)
        self.force_validation()

    def setup_proxies(self):
        self._setup_widgets()

    #
    # callbacks
    #

    def _after_method_select__method_changed(self, slave, method):
        self._update_payment_method_slave()

class BaseMethodSelectionStep(object):
    """Base class for method selection when doing client sales

    Classes using this base class should have a select_method_holder EventBox
    and a cash_change_holder EventBox in the glade file
    """

    #
    #   Private API
    #

    def _update_next_step(self, method):
        if method and method.method_name == u'money':
            self.wizard.enable_finish()
            if self.wizard.need_create_payment():
                self.cash_change_slave.enable_cash_change()
            else:
                self.cash_change_slave.disable_cash_change()
        else:
            self.wizard.disable_finish()
            self.cash_change_slave.disable_cash_change()

    #
    #   Public API
    #

    def get_selected_method(self):
        return self.pm_slave.get_selected_method()

    def setup_cash_payment(self, total=None):
        money_method = PaymentMethod.get_by_name(self.store, u'money')
        total = total or self.wizard.get_total_to_pay()
        return money_method.create_inpayment(self.model.group,
                                             self.model.branch, total)

    #
    # WizardStep hooks
    #

    def post_init(self):
        if not self.wizard.need_create_payment():
            for widget in [self.select_method_holder,
                           self.subtotal_expander]:
                widget.hide()

        self._update_next_step(self.pm_slave.get_selected_method())

    def setup_slaves(self):
        marker('SelectPaymentMethodSlave')
        self.pm_slave = SelectPaymentMethodSlave(store=self.store,
                                                 payment_type=Payment.TYPE_IN)
        self.pm_slave.connect('method-changed', self.on_payment_method_changed)
        self.attach_slave('select_method_holder', self.pm_slave)

        marker('CashChangeSlave')
        self.cash_change_slave = CashChangeSlave(self.store, self.model, self.wizard)
        self.attach_slave('cash_change_holder', self.cash_change_slave)
        self.cash_change_slave.received_value.connect(
            'activate', lambda entry: self.wizard.go_to_next())

    def next_step(self):
        if not self.wizard.need_create_payment():
            return

        selected_method = self.get_selected_method()
        if selected_method.method_name == u'money':
            if not self.cash_change_slave.can_finish():
                warning(_(u"Invalid value, please verify if it was "
                          "properly typed."))
                self.cash_change_slave.received_value.select_region(
                    0, len(self.cash_change_slave.received_value.get_text()))
                self.cash_change_slave.received_value.grab_focus()
                return self

            # We have to modify the payment, so the fiscal printer can
            # calculate and print the payback, if necessary.
            payment = self.setup_cash_payment()
            total = self.cash_change_slave.get_received_value()
            payment.base_value = total

            # Return None here means call wizard.finish, which is exactly
            # what we need
            return None
        elif selected_method.method_name == u'store_credit':
            client = self.model.client
            total = self.wizard.get_total_amount()

            assert client.can_purchase(selected_method, total)

            step_class = PaymentMethodStep
        elif selected_method.method_name == 'card':
            providers = CreditProvider.get_card_providers(self.store)
            if providers.is_empty():
                warning(_("You need active credit providers to use the "
                          "card payment method."))
                return self
            step_class = PaymentMethodStep
        else:
            step_class = PaymentMethodStep

#.........这里部分代码省略.........

    def test_set_client_none(self):
        slave = SelectPaymentMethodSlave(store=self.store,
                                         payment_type=Payment.TYPE_IN)

        slave.set_client(None, 100)
        self.check_slave(slave, 'slave-select-payment-method-client-none')