Method test_alter_int_pk_to_autofield_pk

tests/schema/tests.py:2180–2208

Should be able to rename an IntegerField(primary_key=True) to AutoField(primary_key=True).

(self)

        self.assertIsNotNone(Author.objects.create(name="Bar"))

    def test_alter_int_pk_to_autofield_pk(self):
        """
        Should be able to rename an IntegerField(primary_key=True) to
        AutoField(primary_key=True).
        """
        with connection.schema_editor() as editor:
            editor.create_model(IntegerPK)

        old_field = IntegerPK._meta.get_field("i")
        new_field = AutoField(primary_key=True)
        new_field.model = IntegerPK
        new_field.set_attributes_from_name("i")

        with connection.schema_editor() as editor:
            editor.alter_field(IntegerPK, old_field, new_field, strict=True)

        # A model representing the updated model.
        class IntegerPKToAutoField(Model):
            i = AutoField(primary_key=True)
            j = IntegerField(unique=True)

            class Meta:
                app_label = "schema"
                apps = new_apps
                db_table = IntegerPK._meta.db_table

        # An id (i) is generated by the database.
        obj = IntegerPKToAutoField.objects.create(j=1)
        self.assertIsNotNone(obj.i)

    def test_alter_int_pk_to_bigautofield_pk(self):
        """