#23 Add tests for caching

django_migration_linter/constants.py

@@ -0,0 +1,21 @@
+# Copyright 2018 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.
+
+from pathlib import Path
+
+from appdirs import user_cache_dir
+
+__VERSION__ = '0.0.7'
+
+DEFAULT_CACHE_PATH = Path(user_cache_dir("django-migration-linter", version=__VERSION__))

django_migration_linter/utils.py

@@ -16,6 +16,8 @@ from __future__ import print_function
 import os
 import sys
 
+from django_migration_linter.constants import DEFAULT_CACHE_PATH
+
 
 def is_django_project(path):
     django_manage_file = os.path.join(path, 'manage.py')
@@ -54,3 +56,7 @@ def split_path(path):
 
 def clean_bytes_to_str(byte_input):
     return byte_input.decode('utf-8').strip()
+
+
+def get_default_cache_file(project_name):
+    os.join(DEFAULT_CACHE_PATH, '{0}.pickle'.format(project_name))