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Code Issues 32 Releases Wiki Activity

Fixed #26760 -- Added --prune option to migrate command.

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This commit is contained in:
Jacob Walls
2021-12-24 18:37:22 -05:00
committed by Mariusz Felisiak
parent eeff1787b0
commit 2d8232fa71
7 changed files with 177 additions and 0 deletions
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86
tests/migrations/test_commands.py
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@@ -1043,6 +1043,92 @@ class MigrateTests(MigrationTestBase):
call_command('migrate', 'migrated_app', 'zero', verbosity=0)
call_command('migrate', 'migrated_unapplied_app', 'zero', verbosity=0)
@override_settings(MIGRATION_MODULES={
'migrations': 'migrations.test_migrations_squashed_no_replaces',
})
def test_migrate_prune(self):
"""
With prune=True, references to migration files deleted from the
migrations module (such as after being squashed) are removed from the
django_migrations table.
"""
recorder = MigrationRecorder(connection)
recorder.record_applied('migrations', '0001_initial')
recorder.record_applied('migrations', '0002_second')
recorder.record_applied('migrations', '0001_squashed_0002')
out = io.StringIO()
try:
call_command('migrate', 'migrations', prune=True, stdout=out, no_color=True)
self.assertEqual(
out.getvalue(),
'Pruning migrations:\n'
' Pruning migrations.0001_initial OK\n'
' Pruning migrations.0002_second OK\n',
)
applied_migrations = [
migration
for migration in recorder.applied_migrations()
if migration[0] == 'migrations'
]
self.assertEqual(applied_migrations, [('migrations', '0001_squashed_0002')])
finally:
recorder.record_unapplied('migrations', '0001_initial')
recorder.record_unapplied('migrations', '0001_second')
recorder.record_unapplied('migrations', '0001_squashed_0002')
@override_settings(MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'})
def test_prune_deleted_squashed_migrations_in_replaces(self):
out = io.StringIO()
with self.temporary_migration_module(
module='migrations.test_migrations_squashed'
) as migration_dir:
try:
call_command('migrate', 'migrations', verbosity=0)
# Delete the replaced migrations.
os.remove(os.path.join(migration_dir, '0001_initial.py'))
os.remove(os.path.join(migration_dir, '0002_second.py'))
# --prune cannot be used before removing the "replaces"
# attribute.
call_command(
'migrate', 'migrations', prune=True, stdout=out, no_color=True,
)
self.assertEqual(
out.getvalue(),
"Pruning migrations:\n"
" Cannot use --prune because the following squashed "
"migrations have their 'replaces' attributes and may not "
"be recorded as applied:\n"
" migrations.0001_squashed_0002\n"
" Re-run 'manage.py migrate' if they are not marked as "
"applied, and remove 'replaces' attributes in their "
"Migration classes.\n"
)
finally:
# Unmigrate everything.
call_command('migrate', 'migrations', 'zero', verbosity=0)
@override_settings(
MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed'}
)
def test_prune_no_migrations_to_prune(self):
out = io.StringIO()
call_command('migrate', 'migrations', prune=True, stdout=out, no_color=True)
self.assertEqual(
out.getvalue(),
'Pruning migrations:\n'
' No migrations to prune.\n',
)
out = io.StringIO()
call_command(
'migrate', 'migrations', prune=True, stdout=out, no_color=True, verbosity=0,
)
self.assertEqual(out.getvalue(), '')
def test_prune_no_app_label(self):
msg = 'Migrations can be pruned only when an app is specified.'
with self.assertRaisesMessage(CommandError, msg):
call_command('migrate', prune=True)
class MakeMigrationsTests(MigrationTestBase):
"""