365 lines
16 KiB
Python
365 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import codecs
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import os
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import shutil
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from django.apps import apps
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from django.core.management import call_command, CommandError
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from django.db.migrations import questioner
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from django.test import override_settings, override_system_checks
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from django.utils import six
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from django.utils._os import upath
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from django.utils.encoding import force_text
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from .models import UnicodeModel, UnserializableModel
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from .test_base import MigrationTestBase
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class MigrateTests(MigrationTestBase):
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"""
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Tests running the migrate command.
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"""
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# `auth` app is imported, but not installed in these tests (thanks to
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# MigrationTestBase), so we need to exclude checks registered by this app.
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
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def test_migrate(self):
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"""
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Tests basic usage of the migrate command.
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"""
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# Make sure no tables are created
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self.assertTableNotExists("migrations_author")
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self.assertTableNotExists("migrations_tribble")
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self.assertTableNotExists("migrations_book")
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# Run the migrations to 0001 only
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call_command("migrate", "migrations", "0001", verbosity=0)
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# Make sure the right tables exist
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self.assertTableExists("migrations_author")
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self.assertTableExists("migrations_tribble")
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self.assertTableNotExists("migrations_book")
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# Run migrations all the way
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call_command("migrate", verbosity=0)
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# Make sure the right tables exist
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self.assertTableExists("migrations_author")
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self.assertTableNotExists("migrations_tribble")
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self.assertTableExists("migrations_book")
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# Unmigrate everything
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call_command("migrate", "migrations", "zero", verbosity=0)
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# Make sure it's all gone
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self.assertTableNotExists("migrations_author")
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self.assertTableNotExists("migrations_tribble")
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self.assertTableNotExists("migrations_book")
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
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def test_migrate_list(self):
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"""
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Tests --list output of migrate command
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"""
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stdout = six.StringIO()
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call_command("migrate", list=True, stdout=stdout, verbosity=0)
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self.assertIn("migrations", stdout.getvalue().lower())
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self.assertIn("[ ] 0001_initial", stdout.getvalue().lower())
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self.assertIn("[ ] 0002_second", stdout.getvalue().lower())
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call_command("migrate", "migrations", "0001", verbosity=0)
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stdout = six.StringIO()
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# Giving the explicit app_label tests for selective `show_migration_list` in the command
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call_command("migrate", "migrations", list=True, stdout=stdout, verbosity=0)
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self.assertIn("migrations", stdout.getvalue().lower())
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self.assertIn("[x] 0001_initial", stdout.getvalue().lower())
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self.assertIn("[ ] 0002_second", stdout.getvalue().lower())
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# Cleanup by unmigrating everything
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call_command("migrate", "migrations", "zero", verbosity=0)
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_migrate_conflict_exit(self):
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"""
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Makes sure that migrate exits if it detects a conflict.
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"""
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with self.assertRaises(CommandError):
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call_command("migrate", "migrations")
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
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def test_sqlmigrate(self):
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"""
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Makes sure that sqlmigrate does something.
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"""
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# Test forwards. All the databases agree on CREATE TABLE, at least.
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stdout = six.StringIO()
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call_command("sqlmigrate", "migrations", "0001", stdout=stdout)
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self.assertIn("create table", stdout.getvalue().lower())
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# And backwards is a DROP TABLE
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stdout = six.StringIO()
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call_command("sqlmigrate", "migrations", "0001", stdout=stdout, backwards=True)
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self.assertIn("drop table", stdout.getvalue().lower())
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class MakeMigrationsTests(MigrationTestBase):
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"""
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Tests running the makemigrations command.
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"""
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# Because the `import_module` performed in `MigrationLoader` will cache
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# the migrations package, we can't reuse the same migration package
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# between tests. This is only a problem for testing, since `makemigrations`
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# is normally called in its own process.
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creation_counter = 0
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def setUp(self):
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MakeMigrationsTests.creation_counter += 1
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self._cwd = os.getcwd()
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self.test_dir = os.path.abspath(os.path.dirname(upath(__file__)))
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self.migration_dir = os.path.join(self.test_dir, 'migrations_%d' % self.creation_counter)
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self.migration_pkg = "migrations.migrations_%d" % self.creation_counter
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self._old_models = apps.app_configs['migrations'].models.copy()
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def tearDown(self):
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apps.app_configs['migrations'].models = self._old_models
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apps.all_models['migrations'] = self._old_models
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apps.clear_cache()
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os.chdir(self.test_dir)
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try:
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self._rmrf(self.migration_dir)
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except OSError:
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pass
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os.chdir(self._cwd)
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def _rmrf(self, dname):
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if os.path.commonprefix([self.test_dir, os.path.abspath(dname)]) != self.test_dir:
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return
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shutil.rmtree(dname)
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# `auth` app is imported, but not installed in this test (thanks to
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# MigrationTestBase), so we need to exclude checks registered by this app.
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@override_system_checks([])
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def test_files_content(self):
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self.assertTableNotExists("migrations_unicodemodel")
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apps.register_model('migrations', UnicodeModel)
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with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
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call_command("makemigrations", "migrations", verbosity=0)
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init_file = os.path.join(self.migration_dir, "__init__.py")
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# Check for existing __init__.py file in migrations folder
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self.assertTrue(os.path.exists(init_file))
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with open(init_file, 'r') as fp:
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content = force_text(fp.read())
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self.assertEqual(content, '')
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initial_file = os.path.join(self.migration_dir, "0001_initial.py")
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# Check for existing 0001_initial.py file in migration folder
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self.assertTrue(os.path.exists(initial_file))
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with codecs.open(initial_file, 'r', encoding='utf-8') as fp:
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content = fp.read()
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self.assertTrue('# -*- coding: utf-8 -*-' in content)
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self.assertTrue('migrations.CreateModel' in content)
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if six.PY3:
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self.assertTrue('úñí©óðé µóðéø' in content) # Meta.verbose_name
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self.assertTrue('úñí©óðé µóðéøß' in content) # Meta.verbose_name_plural
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self.assertTrue('ÚÑÍ¢ÓÐÉ' in content) # title.verbose_name
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self.assertTrue('“Ðjáñgó”' in content) # title.default
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else:
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self.assertTrue('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8' in content) # Meta.verbose_name
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self.assertTrue('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8\\xdf' in content) # Meta.verbose_name_plural
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self.assertTrue('\\xda\\xd1\\xcd\\xa2\\xd3\\xd0\\xc9' in content) # title.verbose_name
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self.assertTrue('\\u201c\\xd0j\\xe1\\xf1g\\xf3\\u201d' in content) # title.default
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# `auth` app is imported, but not installed in this test (thanks to
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# MigrationTestBase), so we need to exclude checks registered by this app.
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@override_system_checks([])
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def test_failing_migration(self):
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#21280 - If a migration fails to serialize, it shouldn't generate an empty file.
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apps.register_model('migrations', UnserializableModel)
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with six.assertRaisesRegex(self, ValueError, r'Cannot serialize'):
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with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
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call_command("makemigrations", "migrations", verbosity=0)
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initial_file = os.path.join(self.migration_dir, "0001_initial.py")
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self.assertFalse(os.path.exists(initial_file))
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_makemigrations_conflict_exit(self):
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"""
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Makes sure that makemigrations exits if it detects a conflict.
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"""
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with self.assertRaises(CommandError):
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call_command("makemigrations")
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_makemigrations_merge_basic(self):
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"""
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Makes sure that makemigrations doesn't error if you ask for
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merge mode with a conflict present. Doesn't test writing of the merge
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file, as that requires temp directories.
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"""
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try:
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call_command("makemigrations", merge=True, verbosity=0)
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except CommandError:
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self.fail("Makemigrations errored in merge mode with conflicts")
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
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def test_makemigrations_merge_no_conflict(self):
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"""
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Makes sure that makemigrations exits if in merge mode with no conflicts.
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"""
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stdout = six.StringIO()
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try:
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call_command("makemigrations", merge=True, stdout=stdout)
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except CommandError:
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self.fail("Makemigrations errored in merge mode with no conflicts")
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self.assertIn("No conflicts detected to merge.", stdout.getvalue())
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@override_system_checks([])
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def test_makemigrations_no_app_sys_exit(self):
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"""
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Makes sure that makemigrations exits if a non-existent app is specified.
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"""
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stderr = six.StringIO()
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with self.assertRaises(SystemExit):
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call_command("makemigrations", "this_app_does_not_exist", stderr=stderr)
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self.assertIn("'this_app_does_not_exist' could not be found.", stderr.getvalue())
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@override_system_checks([])
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def test_makemigrations_empty_no_app_specified(self):
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"""
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Makes sure that makemigrations exits if no app is specified with 'empty' mode.
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"""
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with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
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self.assertRaises(CommandError, call_command, "makemigrations", empty=True)
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@override_system_checks([])
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def test_makemigrations_empty_migration(self):
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"""
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Makes sure that makemigrations properly constructs an empty migration.
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"""
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with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
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try:
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call_command("makemigrations", "migrations", empty=True, verbosity=0)
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except CommandError:
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self.fail("Makemigrations errored in creating empty migration for a proper app.")
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initial_file = os.path.join(self.migration_dir, "0001_initial.py")
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# Check for existing 0001_initial.py file in migration folder
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self.assertTrue(os.path.exists(initial_file))
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with codecs.open(initial_file, 'r', encoding='utf-8') as fp:
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content = fp.read()
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self.assertTrue('# -*- coding: utf-8 -*-' in content)
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# Remove all whitespace to check for empty dependencies and operations
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content = content.replace(' ', '')
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self.assertIn('dependencies=[\n]', content)
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self.assertIn('operations=[\n]', content)
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@override_system_checks([])
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def test_makemigrations_no_changes_no_apps(self):
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"""
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Makes sure that makemigrations exits when there are no changes and no apps are specified.
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"""
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stdout = six.StringIO()
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call_command("makemigrations", stdout=stdout)
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self.assertIn("No changes detected", stdout.getvalue())
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_changes"})
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def test_makemigrations_no_changes(self):
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"""
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Makes sure that makemigrations exits when there are no changes to an app.
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"""
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stdout = six.StringIO()
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call_command("makemigrations", "migrations", stdout=stdout)
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self.assertIn("No changes detected in app 'migrations'", stdout.getvalue())
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@override_system_checks([])
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def test_makemigrations_migrations_announce(self):
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"""
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Makes sure that makemigrations announces the migration at the default verbosity level.
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"""
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stdout = six.StringIO()
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with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
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call_command("makemigrations", "migrations", stdout=stdout)
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self.assertIn("Migrations for 'migrations'", stdout.getvalue())
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_ancestor"})
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def test_makemigrations_no_common_ancestor(self):
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"""
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Makes sure that makemigrations fails to merge migrations with no common ancestor.
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"""
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with self.assertRaises(ValueError) as context:
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call_command("makemigrations", "migrations", merge=True)
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exception_message = str(context.exception)
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self.assertIn("Could not find common ancestor of", exception_message)
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self.assertIn("0002_second", exception_message)
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self.assertIn("0002_conflicting_second", exception_message)
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_makemigrations_interactive_reject(self):
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"""
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Makes sure that makemigrations enters and exits interactive mode properly.
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"""
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# Monkeypatch interactive questioner to auto reject
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old_input = questioner.input
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questioner.input = lambda _: "N"
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try:
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call_command("makemigrations", "migrations", merge=True, interactive=True, verbosity=0)
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merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py')
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self.assertFalse(os.path.exists(merge_file))
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except CommandError:
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self.fail("Makemigrations failed while running interactive questioner")
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finally:
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questioner.input = old_input
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_makemigrations_interactive_accept(self):
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"""
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Makes sure that makemigrations enters interactive mode and merges properly.
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"""
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# Monkeypatch interactive questioner to auto accept
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old_input = questioner.input
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questioner.input = lambda _: "y"
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stdout = six.StringIO()
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try:
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call_command("makemigrations", "migrations", merge=True, interactive=True, stdout=stdout)
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merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py')
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self.assertTrue(os.path.exists(merge_file))
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os.remove(merge_file)
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self.assertFalse(os.path.exists(merge_file))
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except CommandError:
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self.fail("Makemigrations failed while running interactive questioner")
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finally:
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questioner.input = old_input
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self.assertIn("Created new merge migration", stdout.getvalue())
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@override_system_checks([])
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@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
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def test_makemigrations_handle_merge(self):
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"""
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Makes sure that makemigrations properly merges the conflicting migrations.
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"""
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stdout = six.StringIO()
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call_command("makemigrations", "migrations", merge=True, stdout=stdout)
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self.assertIn("Merging migrations", stdout.getvalue())
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self.assertIn("Branch 0002_second", stdout.getvalue())
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self.assertIn("Branch 0002_conflicting_second", stdout.getvalue())
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