Viewing github.com/django/django-stable-4.1.x/tests/save_delete_hooks/tests.py

```
from django.test import TestCase
```
```
from .models import Person
```
```
class SaveDeleteHookTests(TestCase):
```
```
    def test_basic(self):
```

        p = Person(first_name="John", last_name="Smith")

```
        self.assertEqual(p.data, [])
```
```
        p.save()
```
```
        self.assertEqual(
```
```
            p.data,
```
```
            [
```
```
                "Before save",
```
```
                "After save",
```
```
            ],
```
```
        )
```
```
        self.assertQuerysetEqual(
```
```
            Person.objects.all(),
```
```
            [
```
```
                "John Smith",
```
```
            ],
```
```
            str,
```
```
        )
```
```
        p.delete()
```
```
        self.assertEqual(
```
```
            p.data,
```
```
            [
```
```
                "Before save",
```
```
                "After save",
```
```
                "Before deletion",
```
```
                "After deletion",
```
```
            ],
```
```
        )
```

        self.assertQuerysetEqual(Person.objects.all(), [])

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