Extract the config provider into its own sub-module

util/config/provider/testprovider.py

@@ -0,0 +1,45 @@
+import json
+from StringIO import StringIO
+
+from util.config.provider.baseprovider import BaseProvider
+
+class TestConfigProvider(BaseProvider):
+  """ Implementation of the config provider for testing. Everything is kept in-memory instead on
+      the real file system. """
+  def __init__(self):
+    self.files = {}
+    self._config = None
+
+  def update_app_config(self, app_config):
+    self._config = app_config
+
+  def get_yaml(self):
+    if not 'config.yaml' in self.files:
+      return None
+
+    return json.loads(self.files.get('config.yaml', '{}'))
+
+  def save_yaml(self, config_obj):
+    self.files['config.yaml'] = json.dumps(config_obj)
+
+  def yaml_exists(self):
+    return 'config.yaml' in self.files
+
+  def volume_exists(self):
+    return True
+
+  def volume_file_exists(self, filename):
+    return filename in self.files
+
+  def save_volume_file(self, filename, flask_file):
+    self.files[filename] = ''
+
+  def get_volume_file(self, filename, mode='r'):
+    return StringIO(self.files[filename])
+
+  def requires_restart(self, app_config):
+    return False
+
+  def reset_for_test(self):
+    self._config['SUPER_USERS'] = ['devtable']
+    self.files = {}