katiayn

# <project>/settings.py

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        # ...
        "OPTIONS": {
            "pool": {
                "min_size": 2,
                "max_size": 4,

katiayn

# parameter as a list: genre_list is set to ["drama", "comedy", "sci-fi"]
# current query_sring '?type=movie&genre=comedy&page=2'

{% query_string type=None genre=genre_list page=page.next_page_number %}

# results in '?genre=drama&genre=comedy&genre=sci-fi&page=3'

katiayn

# <project>/settings.py

MIDDLEWARE = [
    # ...
    'django.contrib.auth.middleware.LoginRequiredMiddleware',
]

# <app>/urls.py

from django.contrib.auth.decorators import login_not_required

katiayn

class Property(models.Model):
    # fields

    class Meta:
        abstract = True

katiayn

class Property(models.Model):
    price = models.DecimalField(max_digits=15, decimal_places=2)
    rooms = models.PositiveIntegerField()
    address = models.TextField(null=True, blank=True)
    city = models.CharField(max_length=255)
    country = models.CharField(max_length=255)

    class Meta:
        abstract = True

katiayn

$ # mut.py --target node --unit-test test_node
$ mut.py --target calculator --unit-test test_calculator -m

katiayn

[*] Start mutation process:
   - targets: calculator
   - tests: test_calculator
[*] All tests passed:
   - test_calculator [0.00031 s]
[*] Start mutants generation and execution:
   - [#   1] AOR calculator.py:2  :
--------------------------------------------------------------------
 1: def mul(x, y):
~2:     return x / y

katiayn

class ProductQuestionnaireCreateTestCase(SimpleTestCase):

    def test_vat_20_if_biscuit_coated_in_chocolate(self):
        calc = VATCalculator()
        self.assertEqual(
            calc.calculate_vat(
                is_biscuit=True,
                is_coated_in_chocolate=True
            ), 20)

katiayn

class VATCalculator(object):

    def calculate_vat(self, **kwargs):
        is_biscuit = kwargs['is_biscuit']
        is_coated_in_chocolate = kwargs['is_coated_in_chocolate']
        if is_biscuit and is_coated_in_chocolate:
            return 20

katiayn

class ProductQuestionnaireTestCase(TestCase):

    def test_vat_20_if_biscuit_coated_in_chocolate(self):
        product = ProductFactory()
        form = ProductQuestionnaireForm(data={
            'is_biscuit': True,
            'is_coated_in_chocolate': True
        })
        self.assertTrue(form.is_valid())
        form.save()