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Made migrations tests write to a temporary directory. 

This is preferrable to writing in the current working directory because
it eliminates the risk to leak unwanted files, which can result in very
weird test failures.

Also this will help if we ever try to run these tests concurrently.
This commit is contained in:
Aymeric Augustin 2015-02-22 21:50:16 +01:00 committed by Aymeric Augustin
parent b9c619abc1
commit 903d1a57ab
2 changed files with 176 additions and 176 deletions
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52
tests/migrations/test_base.py
View File

@ -1,8 +1,14 @@
import os import os
import shutil
import tempfile
from contextlib import contextmanager
from importlib import import_module
from django.apps import apps
from django.db import connection from django.db import connection
from django.test import TransactionTestCase from django.test import TransactionTestCase
from django.utils._os import upath from django.test.utils import extend_sys_path
from django.utils.module_loading import module_dir
class MigrationTestBase(TransactionTestCase): class MigrationTestBase(TransactionTestCase):
@ -11,7 +17,6 @@ class MigrationTestBase(TransactionTestCase):
""" """
available_apps = ["migrations"] available_apps = ["migrations"]
test_dir = os.path.abspath(os.path.dirname(upath(__file__)))
def get_table_description(self, table): def get_table_description(self, table):
with connection.cursor() as cursor: with connection.cursor() as cursor:
@ -64,3 +69,46 @@ class MigrationTestBase(TransactionTestCase):
def assertFKNotExists(self, table, columns, to, value=True): def assertFKNotExists(self, table, columns, to, value=True):
return self.assertFKExists(table, columns, to, False) return self.assertFKExists(table, columns, to, False)
@contextmanager
def temporary_migration_module(self, app_label='migrations', module=None):
"""
Allows testing management commands in a temporary migrations module.
Wrap all invocations to makemigrations and squashmigrations with this
context manager in order to avoid creating migration files in your
source tree inadvertently.
Takes the application label that will be passed to makemigrations or
squashmigrations and the Python path to a migrations module.
The migrations module is used as a template for creating the temporary
migrations module. If it isn't provided, the application's migrations
module is used, if it exists.
Returns the filesystem path to the temporary migrations module.
"""
temp_dir = tempfile.mkdtemp()
try:
target_dir = tempfile.mkdtemp(dir=temp_dir)
with open(os.path.join(target_dir, '__init__.py'), 'w'):
pass
target_migrations_dir = os.path.join(target_dir, 'migrations')
if module is None:
module = apps.get_app_config(app_label).name + '.migrations'
try:
source_migrations_dir = module_dir(import_module(module))
except (ImportError, ValueError):
pass
else:
shutil.copytree(source_migrations_dir, target_migrations_dir)
with extend_sys_path(temp_dir):
new_module = os.path.basename(target_dir) + '.migrations'
with self.settings(MIGRATION_MODULES={app_label: new_module}):
yield target_migrations_dir
finally:
shutil.rmtree(temp_dir)

300
tests/migrations/test_commands.py
View File

@ -4,7 +4,6 @@ from __future__ import unicode_literals
import codecs import codecs
import importlib import importlib
import os import os
import shutil
from django.apps import apps from django.apps import apps
from django.core.management import CommandError, call_command from django.core.management import CommandError, call_command
@ -344,109 +343,79 @@ class MakeMigrationsTests(MigrationTestBase):
Tests running the makemigrations command. Tests running the makemigrations command.
""" """
# Because the `import_module` performed in `MigrationLoader` will cache
# the migrations package, we can't reuse the same migration package
# between tests. This is only a problem for testing, since `makemigrations`
# is normally called in its own process.
creation_counter = 0
def setUp(self): def setUp(self):
MakeMigrationsTests.creation_counter += 1 super(MigrationTestBase, self).setUp()
self.migration_dir = os.path.join(self.test_dir, 'migrations_%d' % self.creation_counter)
self.migration_pkg = "migrations.migrations_%d" % self.creation_counter
self._old_models = apps.app_configs['migrations'].models.copy() self._old_models = apps.app_configs['migrations'].models.copy()
def tearDown(self): def tearDown(self):
apps.app_configs['migrations'].models = self._old_models apps.app_configs['migrations'].models = self._old_models
apps.all_models['migrations'] = self._old_models apps.all_models['migrations'] = self._old_models
apps.clear_cache() apps.clear_cache()
super(MigrationTestBase, self).tearDown()
_cwd = os.getcwd()
os.chdir(self.test_dir)
try:
try:
self._rmrf(self.migration_dir)
except OSError:
pass
try:
self._rmrf(os.path.join(self.test_dir,
"test_migrations_path_doesnt_exist"))
except OSError:
pass
finally:
os.chdir(_cwd)
def _rmrf(self, dname):
if os.path.commonprefix([self.test_dir, os.path.abspath(dname)]) != self.test_dir:
return
shutil.rmtree(dname)
def test_files_content(self): def test_files_content(self):
self.assertTableNotExists("migrations_unicodemodel") self.assertTableNotExists("migrations_unicodemodel")
apps.register_model('migrations', UnicodeModel) apps.register_model('migrations', UnicodeModel)
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with self.temporary_migration_module() as migration_dir:
call_command("makemigrations", "migrations", verbosity=0) call_command("makemigrations", "migrations", verbosity=0)
init_file = os.path.join(self.migration_dir, "__init__.py") # Check for empty __init__.py file in migrations folder
init_file = os.path.join(migration_dir, "__init__.py")
self.assertTrue(os.path.exists(init_file))
# Check for existing __init__.py file in migrations folder with open(init_file, 'r') as fp:
self.assertTrue(os.path.exists(init_file)) content = force_text(fp.read())
with open(init_file, 'r') as fp:
content = force_text(fp.read())
self.assertEqual(content, '') self.assertEqual(content, '')
initial_file = os.path.join(self.migration_dir, "0001_initial.py") # Check for existing 0001_initial.py file in migration folder
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
# Check for existing 0001_initial.py file in migration folder with codecs.open(initial_file, 'r', encoding='utf-8') as fp:
self.assertTrue(os.path.exists(initial_file)) content = fp.read()
self.assertIn('# -*- coding: utf-8 -*-', content)
self.assertIn('migrations.CreateModel', content)
with codecs.open(initial_file, 'r', encoding='utf-8') as fp: if six.PY3:
content = fp.read() self.assertIn('úñí©óðé µóðéø', content) # Meta.verbose_name
self.assertIn('# -*- coding: utf-8 -*-', content) self.assertIn('úñí©óðé µóðéøß', content) # Meta.verbose_name_plural
self.assertIn('migrations.CreateModel', content) self.assertIn('ÚÑÍ¢ÓÐÉ', content) # title.verbose_name
self.assertIn('“Ðjáñgó”', content) # title.default
if six.PY3: else:
self.assertIn('úñí©óðé µóðéø', content) # Meta.verbose_name self.assertIn('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8', content) # Meta.verbose_name
self.assertIn('úñí©óðé µóðéøß', content) # Meta.verbose_name_plural self.assertIn('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8\\xdf', content) # Meta.verbose_name_plural
self.assertIn('ÚÑÍ¢ÓÐÉ', content) # title.verbose_name self.assertIn('\\xda\\xd1\\xcd\\xa2\\xd3\\xd0\\xc9', content) # title.verbose_name
self.assertIn('“Ðjáñgó”', content) # title.default self.assertIn('\\u201c\\xd0j\\xe1\\xf1g\\xf3\\u201d', content) # title.default
else:
self.assertIn('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8', content) # Meta.verbose_name
self.assertIn('\\xfa\\xf1\\xed\\xa9\\xf3\\xf0\\xe9 \\xb5\\xf3\\xf0\\xe9\\xf8\\xdf', content) # Meta.verbose_name_plural
self.assertIn('\\xda\\xd1\\xcd\\xa2\\xd3\\xd0\\xc9', content) # title.verbose_name
self.assertIn('\\u201c\\xd0j\\xe1\\xf1g\\xf3\\u201d', content) # title.default
def test_failing_migration(self): def test_failing_migration(self):
# If a migration fails to serialize, it shouldn't generate an empty file. #21280 # If a migration fails to serialize, it shouldn't generate an empty file. #21280
apps.register_model('migrations', UnserializableModel) apps.register_model('migrations', UnserializableModel)
with six.assertRaisesRegex(self, ValueError, r'Cannot serialize'): with self.temporary_migration_module() as migration_dir:
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with six.assertRaisesRegex(self, ValueError, r'Cannot serialize'):
call_command("makemigrations", "migrations", verbosity=0) call_command("makemigrations", "migrations", verbosity=0)
initial_file = os.path.join(self.migration_dir, "0001_initial.py") initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertFalse(os.path.exists(initial_file)) self.assertFalse(os.path.exists(initial_file))
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_makemigrations_conflict_exit(self): def test_makemigrations_conflict_exit(self):
""" """
Makes sure that makemigrations exits if it detects a conflict. Makes sure that makemigrations exits if it detects a conflict.
""" """
with self.assertRaises(CommandError): with self.temporary_migration_module(module="migrations.test_migrations_conflict"):
call_command("makemigrations") with self.assertRaises(CommandError):
call_command("makemigrations")
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_makemigrations_merge_no_conflict(self): def test_makemigrations_merge_no_conflict(self):
""" """
Makes sure that makemigrations exits if in merge mode with no conflicts. Makes sure that makemigrations exits if in merge mode with no conflicts.
""" """
out = six.StringIO() out = six.StringIO()
try: with self.temporary_migration_module(module="migrations.test_migrations"):
call_command("makemigrations", merge=True, stdout=out) try:
except CommandError: call_command("makemigrations", merge=True, stdout=out)
self.fail("Makemigrations errored in merge mode with no conflicts") except CommandError:
self.fail("Makemigrations errored in merge mode with no conflicts")
self.assertIn("No conflicts detected to merge.", out.getvalue()) self.assertIn("No conflicts detected to merge.", out.getvalue())
def test_makemigrations_no_app_sys_exit(self): def test_makemigrations_no_app_sys_exit(self):
@ -462,32 +431,31 @@ class MakeMigrationsTests(MigrationTestBase):
""" """
Makes sure that makemigrations exits if no app is specified with 'empty' mode. Makes sure that makemigrations exits if no app is specified with 'empty' mode.
""" """
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with self.assertRaises(CommandError):
self.assertRaises(CommandError, call_command, "makemigrations", empty=True) call_command("makemigrations", empty=True)
def test_makemigrations_empty_migration(self): def test_makemigrations_empty_migration(self):
""" """
Makes sure that makemigrations properly constructs an empty migration. Makes sure that makemigrations properly constructs an empty migration.
""" """
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with self.temporary_migration_module() as migration_dir:
try: try:
call_command("makemigrations", "migrations", empty=True, verbosity=0) call_command("makemigrations", "migrations", empty=True, verbosity=0)
except CommandError: except CommandError:
self.fail("Makemigrations errored in creating empty migration for a proper app.") self.fail("Makemigrations errored in creating empty migration for a proper app.")
initial_file = os.path.join(self.migration_dir, "0001_initial.py") # Check for existing 0001_initial.py file in migration folder
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
# Check for existing 0001_initial.py file in migration folder with codecs.open(initial_file, 'r', encoding='utf-8') as fp:
self.assertTrue(os.path.exists(initial_file)) content = fp.read()
self.assertIn('# -*- coding: utf-8 -*-', content)
with codecs.open(initial_file, 'r', encoding='utf-8') as fp: # Remove all whitespace to check for empty dependencies and operations
content = fp.read() content = content.replace(' ', '')
self.assertIn('# -*- coding: utf-8 -*-', content) self.assertIn('dependencies=[\n]', content)
self.assertIn('operations=[\n]', content)
# Remove all whitespace to check for empty dependencies and operations
content = content.replace(' ', '')
self.assertIn('dependencies=[\n]', content)
self.assertIn('operations=[\n]', content)
def test_makemigrations_no_changes_no_apps(self): def test_makemigrations_no_changes_no_apps(self):
""" """
@ -497,13 +465,13 @@ class MakeMigrationsTests(MigrationTestBase):
call_command("makemigrations", stdout=out) call_command("makemigrations", stdout=out)
self.assertIn("No changes detected", out.getvalue()) self.assertIn("No changes detected", out.getvalue())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_changes"})
def test_makemigrations_no_changes(self): def test_makemigrations_no_changes(self):
""" """
Makes sure that makemigrations exits when there are no changes to an app. Makes sure that makemigrations exits when there are no changes to an app.
""" """
out = six.StringIO() out = six.StringIO()
call_command("makemigrations", "migrations", stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
call_command("makemigrations", "migrations", stdout=out)
self.assertIn("No changes detected in app 'migrations'", out.getvalue()) self.assertIn("No changes detected in app 'migrations'", out.getvalue())
def test_makemigrations_migrations_announce(self): def test_makemigrations_migrations_announce(self):
@ -511,23 +479,22 @@ class MakeMigrationsTests(MigrationTestBase):
Makes sure that makemigrations announces the migration at the default verbosity level. Makes sure that makemigrations announces the migration at the default verbosity level.
""" """
out = six.StringIO() out = six.StringIO()
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with self.temporary_migration_module():
call_command("makemigrations", "migrations", stdout=out) call_command("makemigrations", "migrations", stdout=out)
self.assertIn("Migrations for 'migrations'", out.getvalue()) self.assertIn("Migrations for 'migrations'", out.getvalue())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_ancestor"})
def test_makemigrations_no_common_ancestor(self): def test_makemigrations_no_common_ancestor(self):
""" """
Makes sure that makemigrations fails to merge migrations with no common ancestor. Makes sure that makemigrations fails to merge migrations with no common ancestor.
""" """
with self.assertRaises(ValueError) as context: with self.assertRaises(ValueError) as context:
call_command("makemigrations", "migrations", merge=True) with self.temporary_migration_module(module="migrations.test_migrations_no_ancestor"):
call_command("makemigrations", "migrations", merge=True)
exception_message = str(context.exception) exception_message = str(context.exception)
self.assertIn("Could not find common ancestor of", exception_message) self.assertIn("Could not find common ancestor of", exception_message)
self.assertIn("0002_second", exception_message) self.assertIn("0002_second", exception_message)
self.assertIn("0002_conflicting_second", exception_message) self.assertIn("0002_conflicting_second", exception_message)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_makemigrations_interactive_reject(self): def test_makemigrations_interactive_reject(self):
""" """
Makes sure that makemigrations enters and exits interactive mode properly. Makes sure that makemigrations enters and exits interactive mode properly.
@ -536,15 +503,15 @@ class MakeMigrationsTests(MigrationTestBase):
old_input = questioner.input old_input = questioner.input
questioner.input = lambda _: "N" questioner.input = lambda _: "N"
try: try:
call_command("makemigrations", "migrations", merge=True, interactive=True, verbosity=0) with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py') call_command("makemigrations", "migrations", merge=True, interactive=True, verbosity=0)
self.assertFalse(os.path.exists(merge_file)) merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
except CommandError: except CommandError:
self.fail("Makemigrations failed while running interactive questioner") self.fail("Makemigrations failed while running interactive questioner")
finally: finally:
questioner.input = old_input questioner.input = old_input
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_makemigrations_interactive_accept(self): def test_makemigrations_interactive_accept(self):
""" """
Makes sure that makemigrations enters interactive mode and merges properly. Makes sure that makemigrations enters interactive mode and merges properly.
@ -554,35 +521,31 @@ class MakeMigrationsTests(MigrationTestBase):
questioner.input = lambda _: "y" questioner.input = lambda _: "y"
out = six.StringIO() out = six.StringIO()
try: try:
call_command("makemigrations", "migrations", merge=True, interactive=True, stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py') call_command("makemigrations", "migrations", merge=True, interactive=True, stdout=out)
self.assertTrue(os.path.exists(merge_file)) merge_file = os.path.join(migration_dir, '0003_merge.py')
os.remove(merge_file) self.assertTrue(os.path.exists(merge_file))
self.assertFalse(os.path.exists(merge_file))
except CommandError: except CommandError:
self.fail("Makemigrations failed while running interactive questioner") self.fail("Makemigrations failed while running interactive questioner")
finally: finally:
questioner.input = old_input questioner.input = old_input
self.assertIn("Created new merge migration", force_text(out.getvalue())) self.assertIn("Created new merge migration", force_text(out.getvalue()))
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_makemigrations_handle_merge(self): def test_makemigrations_handle_merge(self):
""" """
Makes sure that makemigrations properly merges the conflicting migrations with --noinput. Makes sure that makemigrations properly merges the conflicting migrations with --noinput.
""" """
out = six.StringIO() out = six.StringIO()
call_command("makemigrations", "migrations", merge=True, interactive=False, stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
call_command("makemigrations", "migrations", merge=True, interactive=False, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertTrue(os.path.exists(merge_file))
output = force_text(out.getvalue()) output = force_text(out.getvalue())
self.assertIn("Merging migrations", output) self.assertIn("Merging migrations", output)
self.assertIn("Branch 0002_second", output) self.assertIn("Branch 0002_second", output)
self.assertIn("Branch 0002_conflicting_second", output) self.assertIn("Branch 0002_conflicting_second", output)
merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py')
self.assertTrue(os.path.exists(merge_file))
os.remove(merge_file)
self.assertFalse(os.path.exists(merge_file))
self.assertIn("Created new merge migration", output) self.assertIn("Created new merge migration", output)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_default"})
def test_makemigrations_dry_run(self): def test_makemigrations_dry_run(self):
""" """
Ticket #22676 -- `makemigrations --dry-run` should not ask for defaults. Ticket #22676 -- `makemigrations --dry-run` should not ask for defaults.
@ -596,11 +559,11 @@ class MakeMigrationsTests(MigrationTestBase):
app_label = "migrations" app_label = "migrations"
out = six.StringIO() out = six.StringIO()
call_command("makemigrations", "migrations", dry_run=True, stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", dry_run=True, stdout=out)
# Output the expected changes directly, without asking for defaults # Output the expected changes directly, without asking for defaults
self.assertIn("Add field silly_date to sillymodel", out.getvalue()) self.assertIn("Add field silly_date to sillymodel", out.getvalue())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_default"})
def test_makemigrations_dry_run_verbosity_3(self): def test_makemigrations_dry_run_verbosity_3(self):
""" """
Ticket #22675 -- Allow `makemigrations --dry-run` to output the Ticket #22675 -- Allow `makemigrations --dry-run` to output the
@ -615,7 +578,8 @@ class MakeMigrationsTests(MigrationTestBase):
app_label = "migrations" app_label = "migrations"
out = six.StringIO() out = six.StringIO()
call_command("makemigrations", "migrations", dry_run=True, stdout=out, verbosity=3) with self.temporary_migration_module(module="migrations.test_migrations_no_default"):
call_command("makemigrations", "migrations", dry_run=True, stdout=out, verbosity=3)
# Normal --dry-run output # Normal --dry-run output
self.assertIn("- Add field silly_char to sillymodel", out.getvalue()) self.assertIn("- Add field silly_char to sillymodel", out.getvalue())
@ -630,7 +594,6 @@ class MakeMigrationsTests(MigrationTestBase):
self.assertIn("model_name='sillymodel',", out.getvalue()) self.assertIn("model_name='sillymodel',", out.getvalue())
self.assertIn("name='silly_char',", out.getvalue()) self.assertIn("name='silly_char',", out.getvalue())
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_path_doesnt_exist.foo.bar"})
def test_makemigrations_migrations_modules_path_not_exist(self): def test_makemigrations_migrations_modules_path_not_exist(self):
""" """
Ticket #22682 -- Makemigrations fails when specifying custom location Ticket #22682 -- Makemigrations fails when specifying custom location
@ -645,17 +608,16 @@ class MakeMigrationsTests(MigrationTestBase):
app_label = "migrations" app_label = "migrations"
out = six.StringIO() out = six.StringIO()
call_command("makemigrations", "migrations", stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_path_doesnt_exist.foo.bar") as migration_dir:
call_command("makemigrations", "migrations", stdout=out)
# Migrations file is actually created in the expected path.
initial_file = os.path.join(migration_dir, "0001_initial.py")
self.assertTrue(os.path.exists(initial_file))
# Command output indicates the migration is created. # Command output indicates the migration is created.
self.assertIn(" - Create model SillyModel", out.getvalue()) self.assertIn(" - Create model SillyModel", out.getvalue())
# Migrations file is actually created in the expected path.
self.assertTrue(os.path.isfile(os.path.join(self.test_dir,
"test_migrations_path_doesnt_exist", "foo", "bar",
"0001_initial.py")))
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_conflict"})
def test_makemigrations_interactive_by_default(self): def test_makemigrations_interactive_by_default(self):
""" """
Makes sure that the user is prompted to merge by default if there are Makes sure that the user is prompted to merge by default if there are
@ -666,21 +628,19 @@ class MakeMigrationsTests(MigrationTestBase):
old_input = questioner.input old_input = questioner.input
questioner.input = lambda _: "N" questioner.input = lambda _: "N"
out = six.StringIO() out = six.StringIO()
merge_file = os.path.join(self.test_dir, 'test_migrations_conflict', '0003_merge.py')
try: try:
call_command("makemigrations", "migrations", merge=True, stdout=out) with self.temporary_migration_module(module="migrations.test_migrations_conflict") as migration_dir:
# This will fail if interactive is False by default call_command("makemigrations", "migrations", merge=True, stdout=out)
self.assertFalse(os.path.exists(merge_file)) merge_file = os.path.join(migration_dir, '0003_merge.py')
# This will fail if interactive is False by default
self.assertFalse(os.path.exists(merge_file))
except CommandError: except CommandError:
self.fail("Makemigrations failed while running interactive questioner") self.fail("Makemigrations failed while running interactive questioner")
finally: finally:
questioner.input = old_input questioner.input = old_input
if os.path.exists(merge_file):
os.remove(merge_file)
self.assertNotIn("Created new merge migration", out.getvalue()) self.assertNotIn("Created new merge migration", out.getvalue())
@override_settings( @override_settings(
MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_changes"},
INSTALLED_APPS=[ INSTALLED_APPS=[
"migrations", "migrations",
"migrations.migrations_test_apps.unspecified_app_with_conflict"]) "migrations.migrations_test_apps.unspecified_app_with_conflict"])
@ -690,7 +650,8 @@ class MakeMigrationsTests(MigrationTestBase):
unspecified app has conflicting migrations. unspecified app has conflicting migrations.
""" """
try: try:
call_command("makemigrations", "migrations", merge=False, verbosity=0) with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
call_command("makemigrations", "migrations", merge=False, verbosity=0)
except CommandError: except CommandError:
self.fail("Makemigrations fails resolving conflicts in an unspecified app") self.fail("Makemigrations fails resolving conflicts in an unspecified app")
@ -707,105 +668,96 @@ class MakeMigrationsTests(MigrationTestBase):
old_input = questioner.input old_input = questioner.input
questioner.input = lambda _: "y" questioner.input = lambda _: "y"
out = six.StringIO() out = six.StringIO()
merge_file = os.path.join(self.test_dir,
'migrations_test_apps',
'unspecified_app_with_conflict',
'migrations',
'0003_merge.py')
try: try:
call_command("makemigrations", "migrated_app", merge=True, interactive=True, stdout=out) with self.temporary_migration_module(app_label="migrated_app") as migration_dir:
self.assertFalse(os.path.exists(merge_file)) call_command("makemigrations", "migrated_app", merge=True, interactive=True, stdout=out)
merge_file = os.path.join(migration_dir, '0003_merge.py')
self.assertFalse(os.path.exists(merge_file))
self.assertIn("No conflicts detected to merge.", out.getvalue()) self.assertIn("No conflicts detected to merge.", out.getvalue())
except CommandError: except CommandError:
self.fail("Makemigrations fails resolving conflicts in an unspecified app") self.fail("Makemigrations fails resolving conflicts in an unspecified app")
finally: finally:
questioner.input = old_input questioner.input = old_input
if os.path.exists(merge_file):
os.remove(merge_file)
def test_makemigrations_with_custom_name(self): def test_makemigrations_with_custom_name(self):
""" """
Makes sure that makemigrations generate a custom migration. Makes sure that makemigrations generate a custom migration.
""" """
def cmd(migration_count, migration_name, *args): with self.temporary_migration_module() as migration_dir:
with override_settings(MIGRATION_MODULES={"migrations": self.migration_pkg}):
def cmd(migration_count, migration_name, *args):
try: try:
call_command("makemigrations", "migrations", "--verbosity", "0", "--name", migration_name, *args) call_command("makemigrations", "migrations", "--verbosity", "0", "--name", migration_name, *args)
except CommandError: except CommandError:
self.fail("Makemigrations errored in creating empty migration with custom name for a proper app.") self.fail("Makemigrations errored in creating empty migration with custom name for a proper app.")
migration_file = os.path.join(self.migration_dir, "%s_%s.py" % (migration_count, migration_name)) migration_file = os.path.join(migration_dir, "%s_%s.py" % (migration_count, migration_name))
# Check for existing migration file in migration folder # Check for existing migration file in migration folder
self.assertTrue(os.path.exists(migration_file)) self.assertTrue(os.path.exists(migration_file))
with codecs.open(migration_file, "r", encoding="utf-8") as fp: with codecs.open(migration_file, "r", encoding="utf-8") as fp:
content = fp.read() content = fp.read()
self.assertIn("# -*- coding: utf-8 -*-", content) self.assertIn("# -*- coding: utf-8 -*-", content)
content = content.replace(" ", "") content = content.replace(" ", "")
return content return content
# generate an initial migration # generate an initial migration
migration_name_0001 = "my_initial_migration" migration_name_0001 = "my_initial_migration"
content = cmd("0001", migration_name_0001) content = cmd("0001", migration_name_0001)
self.assertIn("dependencies=[\n]", content) self.assertIn("dependencies=[\n]", content)
# Python 3.3+ importlib caches os.listdir() on some platforms like # Python 3.3+ importlib caches os.listdir() on some platforms like
# Mac OS X (#23850). # Mac OS X (#23850).
if hasattr(importlib, 'invalidate_caches'): if hasattr(importlib, 'invalidate_caches'):
importlib.invalidate_caches() importlib.invalidate_caches()
# generate an empty migration # generate an empty migration
migration_name_0002 = "my_custom_migration" migration_name_0002 = "my_custom_migration"
content = cmd("0002", migration_name_0002, "--empty") content = cmd("0002", migration_name_0002, "--empty")
self.assertIn("dependencies=[\n('migrations','0001_%s'),\n]" % migration_name_0001, content) self.assertIn("dependencies=[\n('migrations','0001_%s'),\n]" % migration_name_0001, content)
self.assertIn("operations=[\n]", content) self.assertIn("operations=[\n]", content)
def test_makemigrations_exit(self): def test_makemigrations_exit(self):
""" """
makemigrations --exit should exit with sys.exit(1) when there are no makemigrations --exit should exit with sys.exit(1) when there are no
changes to an app. changes to an app.
""" """
with self.settings(MIGRATION_MODULES={"migrations": self.migration_pkg}): with self.temporary_migration_module():
call_command("makemigrations", "--exit", "migrations", verbosity=0) call_command("makemigrations", "--exit", "migrations", verbosity=0)
with self.settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_no_changes"}): with self.temporary_migration_module(module="migrations.test_migrations_no_changes"):
with self.assertRaises(SystemExit): with self.assertRaises(SystemExit):
call_command("makemigrations", "--exit", "migrations", verbosity=0) call_command("makemigrations", "--exit", "migrations", verbosity=0)
class SquashMigrationsTest(MigrationTestBase): class SquashMigrationsTests(MigrationTestBase):
""" """
Tests running the squashmigrations command. Tests running the squashmigrations command.
""" """
path = "test_migrations/0001_squashed_0002_second.py"
path = os.path.join(MigrationTestBase.test_dir, path)
def tearDown(self):
if os.path.exists(self.path):
os.remove(self.path)
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_squashmigrations_squashes(self): def test_squashmigrations_squashes(self):
""" """
Tests that squashmigrations squashes migrations. Tests that squashmigrations squashes migrations.
""" """
call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=0) with self.temporary_migration_module(module="migrations.test_migrations") as migration_dir:
self.assertTrue(os.path.exists(self.path)) call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=0)
squashed_migration_file = os.path.join(migration_dir, "0001_squashed_0002_second.py")
self.assertTrue(os.path.exists(squashed_migration_file))
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_squashmigrations_optimizes(self): def test_squashmigrations_optimizes(self):
""" """
Tests that squashmigrations optimizes operations. Tests that squashmigrations optimizes operations.
""" """
out = six.StringIO() out = six.StringIO()
call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=1, stdout=out) with self.temporary_migration_module(module="migrations.test_migrations"):
call_command("squashmigrations", "migrations", "0002", interactive=False, verbosity=1, stdout=out)
self.assertIn("Optimized from 7 operations to 5 operations.", force_text(out.getvalue())) self.assertIn("Optimized from 7 operations to 5 operations.", force_text(out.getvalue()))
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
def test_ticket_23799_squashmigrations_no_optimize(self): def test_ticket_23799_squashmigrations_no_optimize(self):
""" """
Makes sure that squashmigrations --no-optimize really doesn't optimize operations. Makes sure that squashmigrations --no-optimize really doesn't optimize operations.
""" """
out = six.StringIO() out = six.StringIO()
call_command("squashmigrations", "migrations", "0002", with self.temporary_migration_module(module="migrations.test_migrations"):
interactive=False, verbosity=1, no_optimize=True, stdout=out) call_command("squashmigrations", "migrations", "0002",
interactive=False, verbosity=1, no_optimize=True, stdout=out)
self.assertIn("Skipping optimization", force_text(out.getvalue())) self.assertIn("Skipping optimization", force_text(out.getvalue()))