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# -*- coding: utf-8 -*-
import os
import pytest
from unittest.mock import patch
from django.core.management import CommandError, call_command
from django.db import models
from django.test import TestCase, override_settings
from tests import testapp_with_appconfig
MIGRATIONS_DIR = os.path.join(testapp_with_appconfig.__path__[0], "migrations")
@override_settings(
MIGRATION_MODULES={
"testapp_with_appconfig": "tests.testapp_with_appconfig.migrations"
}
)
class BaseDeleteSquashedMigrationsTestCase(TestCase):
def migration_exists(self, filename):
return os.path.exists(os.path.join(MIGRATIONS_DIR, filename))
def setUp(self):
class TitleModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
title = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations")
def tearDown(self):
for root, dirs, files in os.walk(MIGRATIONS_DIR):
for filename in files:
if filename.startswith("000"):
os.remove(os.path.join(root, filename))
@pytest.mark.xfail
class DeleteSquashedMigrationsExceptionsTests(BaseDeleteSquashedMigrationsTestCase):
"""Tests for delete_squashed_migrations command exceptions."""
def test_should_raise_CommandError_if_app_does_not_have_migrations(self):
with self.assertRaisesRegex(
CommandError,
r"App 'testapp_with_no_models_file' does not have migrations \(so delete_squashed_migrations on it makes no sense\)",
):
call_command("delete_squashed_migrations", "testapp_with_no_models_file")
def test_should_raise_CommandEror_if_migration_is_not_squashed(self):
with self.assertRaisesRegex(
CommandError,
"The migration testapp_with_appconfig 0001_initial is not a squashed migration.",
):
call_command("delete_squashed_migrations", "testapp_with_appconfig", "0001")
def test_should_raise_CommandEror_if_more_than_one_migration_matches_to_given_arg(
self,
):
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command("squashmigrations", "testapp_with_appconfig", "0002", "--noinput")
with self.assertRaisesRegex(
CommandError,
"More than one migration matches '0001' in app 'testapp_with_appconfig'. Please be more specific.",
):
call_command("delete_squashed_migrations", "testapp_with_appconfig", "0001")
def test_should_raise_CommandEror_if_squashed_migration_not_found(self):
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
with self.assertRaisesRegex(
CommandError,
"Cannot find a squashed migration in app 'testapp_with_appconfig'.",
):
call_command("delete_squashed_migrations", "testapp_with_appconfig")
def test_should_raise_CommandEror_if_squashed_migration_not_foundee(self):
with self.assertRaisesRegex(
CommandError,
"Cannot find a migration matching '0002' from app 'testapp_with_appconfig'.",
):
call_command("delete_squashed_migrations", "testapp_with_appconfig", "0002")
def test_should_raise_CommandError_when_database_does_not_exist(self):
with self.assertRaisesRegex(
CommandError, "Unknown database non-existing_database"
):
call_command(
"delete_squashed_migrations", "--database=non-existing_database"
)
@pytest.mark.xfail
class DeleteSquashedMigrationsTests(BaseDeleteSquashedMigrationsTestCase):
"""Tests for delete_squashed_migrations command."""
@patch(
"django_extensions.management.commands.delete_squashed_migrations.six.moves.input"
)
def test_should_delete_squashed_migrations(self, m_input):
m_input.return_value = "y"
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command("squashmigrations", "testapp_with_appconfig", "0002", "--noinput")
call_command("delete_squashed_migrations", "testapp_with_appconfig")
self.assertFalse(self.migration_exists("0001_initial.py"))
self.assertFalse(self.migration_exists("0002_namemodel.py"))
self.assertTrue(self.migration_exists("0001_squashed_0002_namemodel.py"))
def test_should_delete_squashed_migrations_if_interactive_mode_is_set_to_False(
self,
):
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command("squashmigrations", "testapp_with_appconfig", "0002", "--noinput")
call_command(
"delete_squashed_migrations", "testapp_with_appconfig", interactive=False
)
self.assertFalse(self.migration_exists("0001_initial.py"))
self.assertFalse(self.migration_exists("0002_namemodel.py"))
self.assertTrue(self.migration_exists("0001_squashed_0002_namemodel.py"))
@patch(
"django_extensions.management.commands.delete_squashed_migrations.six.moves.input"
)
def test_should_not_delete_anything(self, m_input):
m_input.return_value = None
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command("squashmigrations", "testapp_with_appconfig", "0002", "--noinput")
call_command("delete_squashed_migrations", "testapp_with_appconfig")
self.assertTrue(self.migration_exists("0001_initial.py"))
self.assertTrue(self.migration_exists("0002_namemodel.py"))
self.assertTrue(self.migration_exists("0001_squashed_0002_namemodel.py"))
def test_should_not_delete_files_for_given_squashed_migration(self):
class NameModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command("squashmigrations", "testapp_with_appconfig", "0002", "--noinput")
class FooModel(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=50)
class Meta:
app_label = "testapp_with_appconfig"
call_command("makemigrations", "testapp_with_appconfig")
call_command(
"delete_squashed_migrations",
"testapp_with_appconfig",
"0001_squashed_0002_namemodel",
interactive=False,
)
self.assertFalse(self.migration_exists("0001_initial.py"))
self.assertFalse(self.migration_exists("0002_namemodel.py"))
self.assertTrue(self.migration_exists("0001_squashed_0002_namemodel.py"))
self.assertTrue(self.migration_exists("0002_foomodel.py"))
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