import datetime

from django.test import TestCase
from django.db import models

from lostplaces_app.models import Voucher
from lostplaces_app.tests.models import ModelTestCase


def mock_voucher():
    return Voucher.objects.create(
        code='ayDraJCCwfhcFiYmSR5GrcjcchDfcahv',
        expires=datetime.datetime.now() + datetime.timedelta(days=1)
    )


class VoucheTestCase(ModelTestCase, TestCase):
    model_name = 'Voucher'

    def setUp(self):
        self.object = mock_voucher()

    def test_voucher_code(self):
        self._test_char_field(
            'code',
            10,
            100,
            must_have={'unique': True}
        )
        
    def test_voucher_created(self):
        self._test_field(
            'created_when',
            models.DateTimeField,
            must_have={'auto_now_add': True}
        )
        
    def test_voucher_expires(self):
        self._test_field(
            'expires_when',
            models.DateTimeField,
            must_not_have={'auto_now_add': True}
        )

    def test_str(self):
        voucher = self.object
        self.assertTrue(voucher.code.lower() in str(voucher).lower(),
            msg='Expecting %s.__str__ to contain the voucher code' % (
                self.model_name
            )
        )