146 lines
5.4 KiB
Python
146 lines
5.4 KiB
Python
# Copyright 2018 3YOURMIND GmbH
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import pprint
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import shutil
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import tempfile
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import unittest
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import sys
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from tests import fixtures
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from django_migration_linter import MigrationLinter, Cache, DEFAULT_CACHE_PATH
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if sys.version_info >= (3, 3):
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import unittest.mock as mock
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else:
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import mock
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class CacheTest(unittest.TestCase):
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MIGRATION_FILE = os.path.join(fixtures.ALTER_COLUMN_PROJECT, 'test_app', 'migrations', '0001_initial.py')
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fd, temp_path = tempfile.mkstemp()
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def setUp(self):
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shutil.copy2(self.MIGRATION_FILE, self.temp_path)
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def tearDown(self):
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shutil.copy2(self.temp_path, self.MIGRATION_FILE)
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os.remove(self.temp_path)
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def test_cache_normal(self):
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cache_file = os.path.join(DEFAULT_CACHE_PATH, 'test_project_add_not_null_column.pickle')
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if os.path.exists(cache_file):
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os.remove(cache_file)
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linter = MigrationLinter(fixtures.ADD_NOT_NULL_COLUMN_PROJECT)
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with mock.patch.object(MigrationLinter, 'get_sql', wraps=linter.get_sql)as sql_mock:
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linter.lint_all_migrations()
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sql_mock.assert_called()
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cache = Cache(
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fixtures.ADD_NOT_NULL_COLUMN_PROJECT,
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DEFAULT_CACHE_PATH
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)
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cache.load()
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self.assertEqual(cache['3ef74e7f3e53e273e2fc95379248d58d']['result'], 'OK')
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self.assertEqual(cache['e1e312b6d08ecbe017c25c58fc2be257']['result'], 'ERR')
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self.assertListEqual(
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cache['e1e312b6d08ecbe017c25c58fc2be257']['errors'],
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[{'err_msg': 'RENAMING tables', 'code': 'RENAME_TABLE', 'table': None, 'column': None}]
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)
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# Start the Linter again -> should use cache now.
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linter = MigrationLinter(fixtures.ADD_NOT_NULL_COLUMN_PROJECT)
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with mock.patch.object(MigrationLinter, 'get_sql', wraps=linter.get_sql)as sql_mock:
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linter.lint_all_migrations()
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sql_mock.assert_not_called()
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self.assertTrue(linter.has_errors)
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def test_cache_ignored(self):
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cache_file = os.path.join(DEFAULT_CACHE_PATH, 'test_project_ignore_migration.pickle')
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if os.path.exists(cache_file):
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os.remove(cache_file)
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linter = MigrationLinter(fixtures.IGNORE_MIGRATION_PROJECT)
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with mock.patch.object(MigrationLinter, 'get_sql', wraps=linter.get_sql)as sql_mock:
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linter.lint_all_migrations()
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sql_mock.assert_called()
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cache = Cache(
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fixtures.IGNORE_MIGRATION_PROJECT,
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DEFAULT_CACHE_PATH
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)
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cache.load()
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self.assertEqual(cache['63230606af0eccaef7f1f78c537c624c']['result'], 'OK')
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self.assertEqual(cache['5c5ca1780a9f28439c1defc1f32af894']['result'], 'IGNORE')
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# Start the Linter again -> should use cache now.
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linter = MigrationLinter(fixtures.IGNORE_MIGRATION_PROJECT)
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with mock.patch.object(MigrationLinter, 'get_sql', wraps=linter.get_sql)as sql_mock:
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linter.lint_all_migrations()
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sql_mock.assert_not_called()
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def test_cache_modified(self):
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cache_file = os.path.join(DEFAULT_CACHE_PATH, 'test_project_alter_column.pickle')
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if os.path.exists(cache_file):
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os.remove(cache_file)
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linter = MigrationLinter(fixtures.ALTER_COLUMN_PROJECT)
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linter.lint_all_migrations()
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cache = Cache(
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fixtures.ALTER_COLUMN_PROJECT,
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DEFAULT_CACHE_PATH
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)
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cache.load()
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self.assertEqual(cache['8589aa107b6da296c4b49cd2681d2230']['result'], 'OK',
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'If this fails, tearDown might have failed to remove '
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'the modification from tests/test_project_fixtures/'
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'test_project_alter_column/test_app/migrations/0001_initial.py'
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)
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self.assertEqual(cache['8f54c4a434cfaa9838e8ca12eb988255']['result'], 'ERR')
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self.assertListEqual(
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cache['8f54c4a434cfaa9838e8ca12eb988255']['errors'],
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[{u'err_msg': u'ALTERING columns (Could be backward compatible. '
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u'You may ignore this migration.)',
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u'code': u'ALTER_COLUMN',
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u'table': u'test_app_a',
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u'column': None}
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]
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)
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# Modify migration
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with open(self.MIGRATION_FILE, "a") as f:
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f.write("# modification at the end of the file\n")
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# Start the Linter again -> Cache should look different now
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linter = MigrationLinter(fixtures.ALTER_COLUMN_PROJECT)
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linter.lint_all_migrations()
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cache = Cache(
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fixtures.ALTER_COLUMN_PROJECT,
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DEFAULT_CACHE_PATH
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)
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cache.load()
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pp = pprint.PrettyPrinter(indent=4)
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pp.pprint(cache)
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self.assertNotIn('8589aa107b6da296c4b49cd2681d2230', cache)
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self.assertEqual(cache['44f9d6d019d6f158946c2819b2bd8bf9']['result'], 'OK')
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