tests.py

# Import Python packages
from datetime import datetime
# Import Django Test
from django.test import TestCase
# Import App models
from .models import Journal, Children


class JournalTestCase(TestCase):
    def setUp(self):
        children = Children.objects.create(name='Sara Doe', gender='F', birthday='2012-05-12', classroom=2)
        Journal.objects.create(children=children, parent='John Doe', time_start=datetime.now())

    def test_journal_add_new_record(self):
        """Test create a new record in `Journal` model."""

        journal = Journal.objects.get(parent='John Doe')

        self.assertEqual(journal.parent, 'John Doe')

    def test_journal_edit_record(self):
        """Test edit a record in `Journal` model."""

        journal = Children.objects.get(name='Sara Doe')
        journal.time_end = datetime.now()
        journal.save()

        self.assertNotEqual(journal.time_end, None)