#!/usr/bin/env python # -*- coding: utf-8 -*- import os import shutil from migrate import exceptions from migrate.versioning.repository import * from migrate.versioning.script import * from migrate.tests import fixture from datetime import datetime class TestRepository(fixture.Pathed): def test_create(self): """Repositories are created successfully""" path = self.tmp_repos() name = 'repository_name' # Creating a repository that doesn't exist should succeed repo = Repository.create(path, name) config_path = repo.config.path manage_path = os.path.join(repo.path, 'manage.py') self.assertTrue(repo) # Files should actually be created self.assertTrue(os.path.exists(path)) self.assertTrue(os.path.exists(config_path)) self.assertTrue(os.path.exists(manage_path)) # Can't create it again: it already exists self.assertRaises(exceptions.PathFoundError, Repository.create, path, name) return path def test_load(self): """We should be able to load information about an existing repository""" # Create a repository to load path = self.test_create() repos = Repository(path) self.assertTrue(repos) self.assertTrue(repos.config) self.assertTrue(repos.config.get('db_settings', 'version_table')) # version_table's default isn't none self.assertNotEqual(repos.config.get('db_settings', 'version_table'), 'None') def test_load_notfound(self): """Nonexistant repositories shouldn't be loaded""" path = self.tmp_repos() self.assertTrue(not os.path.exists(path)) self.assertRaises(exceptions.InvalidRepositoryError, Repository, path) def test_load_invalid(self): """Invalid repos shouldn't be loaded""" # Here, invalid=empty directory. There may be other conditions too, # but we shouldn't need to test all of them path = self.tmp_repos() os.mkdir(path) self.assertRaises(exceptions.InvalidRepositoryError, Repository, path) class TestVersionedRepository(fixture.Pathed): """Tests on an existing repository with a single python script""" def setUp(self): super(TestVersionedRepository, self).setUp() Repository.clear() self.path_repos = self.tmp_repos() Repository.create(self.path_repos, 'repository_name') def test_version(self): """We should correctly detect the version of a repository""" repos = Repository(self.path_repos) # Get latest version, or detect if a specified version exists self.assertEqual(repos.latest, 0) # repos.latest isn't an integer, but a VerNum # (so we can't just assume the following tests are correct) self.assertTrue(repos.latest >= 0) self.assertTrue(repos.latest < 1) # Create a script and test again repos.create_script('') self.assertEqual(repos.latest, 1) self.assertTrue(repos.latest >= 0) self.assertTrue(repos.latest >= 1) self.assertTrue(repos.latest < 2) # Create a new script and test again repos.create_script('') self.assertEqual(repos.latest, 2) self.assertTrue(repos.latest >= 0) self.assertTrue(repos.latest >= 1) self.assertTrue(repos.latest >= 2) self.assertTrue(repos.latest < 3) def test_timestmap_numbering_version(self): repos = Repository(self.path_repos) repos.config.set('db_settings', 'use_timestamp_numbering', 'True') # Get latest version, or detect if a specified version exists self.assertEqual(repos.latest, 0) # repos.latest isn't an integer, but a VerNum # (so we can't just assume the following tests are correct) self.assertTrue(repos.latest >= 0) self.assertTrue(repos.latest < 1) # Create a script and test again now = int(datetime.utcnow().strftime('%Y%m%d%H%M%S')) repos.create_script('') self.assertEqual(repos.latest, now) def test_source(self): """Get a script object by version number and view its source""" # Load repository and commit script repo = Repository(self.path_repos) repo.create_script('') repo.create_script_sql('postgres', 'foo bar') # Source is valid: script must have an upgrade function # (not a very thorough test, but should be plenty) source = repo.version(1).script().source() self.assertTrue(source.find('def upgrade') >= 0) import pprint; pprint.pprint(repo.version(2).sql) source = repo.version(2).script('postgres', 'upgrade').source() self.assertEqual(source.strip(), '') def test_latestversion(self): """Repository.version() (no params) returns the latest version""" repos = Repository(self.path_repos) repos.create_script('') self.assertTrue(repos.version(repos.latest) is repos.version()) self.assertTrue(repos.version() is not None) def test_changeset(self): """Repositories can create changesets properly""" # Create a nonzero-version repository of empty scripts repos = Repository(self.path_repos) for i in range(10): repos.create_script('') def check_changeset(params, length): """Creates and verifies a changeset""" changeset = repos.changeset('postgres', *params) self.assertEqual(len(changeset), length) self.assertTrue(isinstance(changeset, Changeset)) uniq = list() # Changesets are iterable for version, change in changeset: self.assertTrue(isinstance(change, BaseScript)) # Changes aren't identical self.assertTrue(id(change) not in uniq) uniq.append(id(change)) return changeset # Upgrade to a specified version... cs = check_changeset((0, 10), 10) self.assertEqual(cs.keys().pop(0),0 ) # 0 -> 1: index is starting version self.assertEqual(cs.keys().pop(), 9) # 9 -> 10: index is starting version self.assertEqual(cs.start, 0) # starting version self.assertEqual(cs.end, 10) # ending version check_changeset((0, 1), 1) check_changeset((0, 5), 5) check_changeset((0, 0), 0) check_changeset((5, 5), 0) check_changeset((10, 10), 0) check_changeset((5, 10), 5) # Can't request a changeset of higher version than this repository self.assertRaises(Exception, repos.changeset, 'postgres', 5, 11) self.assertRaises(Exception, repos.changeset, 'postgres', -1, 5) # Upgrade to the latest version... cs = check_changeset((0,), 10) self.assertEqual(cs.keys().pop(0), 0) self.assertEqual(cs.keys().pop(), 9) self.assertEqual(cs.start, 0) self.assertEqual(cs.end, 10) check_changeset((1,), 9) check_changeset((5,), 5) check_changeset((9,), 1) check_changeset((10,), 0) # run changes cs.run('postgres', 'upgrade') # Can't request a changeset of higher/lower version than this repository self.assertRaises(Exception, repos.changeset, 'postgres', 11) self.assertRaises(Exception, repos.changeset, 'postgres', -1) # Downgrade cs = check_changeset((10, 0),10) self.assertEqual(cs.keys().pop(0), 10) # 10 -> 9 self.assertEqual(cs.keys().pop(), 1) # 1 -> 0 self.assertEqual(cs.start, 10) self.assertEqual(cs.end, 0) check_changeset((10, 5), 5) check_changeset((5, 0), 5) def test_many_versions(self): """Test what happens when lots of versions are created""" repos = Repository(self.path_repos) for i in range(1001): repos.create_script('') # since we normally create 3 digit ones, let's see if we blow up self.assertTrue(os.path.exists('%s/versions/1000.py' % self.path_repos)) self.assertTrue(os.path.exists('%s/versions/1001.py' % self.path_repos)) # TODO: test manage file # TODO: test changeset