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django-migration-linter/tests/unit/test_linter.py
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# Copyright 2019 3YOURMIND GmbH
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from django_migration_linter import MigrationLinter
from tests import fixtures
class TestLinterFunctions(unittest.TestCase):
def test_get_sql(self):
project_path = fixtures.ADD_NOT_NULL_COLUMN_PROJECT
linter = MigrationLinter(project_path)
sql_statements = linter.get_sql('test_app', '0001')
self.assertEqual(len(sql_statements), 6)
self.assertEqual(sql_statements[0], 'BEGIN;')
self.assertEqual(sql_statements[-1], 'COMMIT;')
def test_has_errors(self):
project_path = fixtures.MULTI_COMMIT_PROJECT
linter = MigrationLinter(project_path)
self.assertFalse(linter.has_errors)
linter.lint_migration('test_app', '0001_create_table')
self.assertFalse(linter.has_errors)
linter.lint_migration('test_app', '0002_add_new_not_null_field')
self.assertTrue(linter.has_errors)
linter.lint_migration('test_app', '0001_create_table')
self.assertTrue(linter.has_errors)
def test_linter_creation(self):
with self.assertRaises(ValueError):
MigrationLinter('foo/')
with self.assertRaises(ValueError):
MigrationLinter('/dev/null')
with self.assertRaises(ValueError):
MigrationLinter(fixtures.NOT_DJANGO_GIT_PROJECT)
def test_ignore_migration_include_apps(self):
linter = MigrationLinter(
fixtures.ADD_NOT_NULL_COLUMN_PROJECT,
include_apps=('test_app2',))
self.assertTrue(linter.should_ignore_migration('test_app1', '0001'))
self.assertFalse(linter.should_ignore_migration('test_app2', '0001'))
def test_ignore_migration_exclude_apps(self):
linter = MigrationLinter(
fixtures.ADD_NOT_NULL_COLUMN_PROJECT,
exclude_apps=('test_app1',))
self.assertTrue(linter.should_ignore_migration('test_app1', '0001'))
self.assertFalse(linter.should_ignore_migration('test_app2', '0001'))
def test_ignore_migration_name_contains(self):
linter = MigrationLinter(
fixtures.ADD_NOT_NULL_COLUMN_PROJECT,
ignore_name_contains='foo')
self.assertTrue(linter.should_ignore_migration('test_app', '0001_foo'))
self.assertFalse(linter.should_ignore_migration('test_app', '0002_bar'))
def test_ignore_migration_full_name(self):
linter = MigrationLinter(
fixtures.ADD_NOT_NULL_COLUMN_PROJECT,
ignore_name=('0001_foo',))
self.assertTrue(linter.should_ignore_migration('test_app', '0001_foo'))
self.assertFalse(linter.should_ignore_migration('test_app', '0002_bar'))
def test_gather_all_migrations(self):
linter = MigrationLinter(fixtures.CORRECT_PROJECT)
migrations = linter._gather_all_migrations()
self.assertEqual(len(migrations), 4)
self.assertEqual(
sorted(migrations),
sorted([
("test_app1", "0001_initial"),
("test_app1", "0002_a_new_null_field"),
("test_app2", "0001_foo"),
("test_app3", "0001_initial"),
])
)