Respect XDG_CONFIG_HOME env variable

to locate configuration home directory.

fixes #12

CHANGELOG.md

@@ -1,6 +1,12 @@
 Changelog
 ---------
 
+**0.17.0 (TBA)**
+
+* Changed configuration file format to allow switching between multiple logged
+  in accounts (#32)
+* Respect XDG_CONFIG_HOME environment variable to locate config home (#12)
+
 **0.16.2 (2018-01-02)**
 
 * No changes, pushed to fix a packaging issue

tests/test_config.py

@@ -1,3 +1,4 @@
+import os
 import pytest
 
 from toot import User, App, config
@@ -119,3 +120,19 @@ def test_delete_app(sample_config):
     config.delete_app.__wrapped__(sample_config, app)
     assert 'foo.social' not in sample_config['apps']
     assert len(sample_config['apps']) == app_count - 1
+
+
+def test_get_config_file_path():
+    fn = config.get_config_file_path
+
+    os.unsetenv('XDG_CONFIG_HOME')
+
+    assert fn() == os.path.expanduser('~/.config/toot/config.json')
+
+    os.environ['XDG_CONFIG_HOME'] = '/foo/bar/config'
+
+    assert fn() == '/foo/bar/config/toot/config.json'
+
+    os.environ['XDG_CONFIG_HOME'] = '~/foo/config'
+
+    assert fn() == os.path.expanduser('~/foo/config/toot/config.json')

toot/config.py

@@ -11,12 +11,18 @@ from toot.exceptions import ConsoleError
 from toot.output import print_out
 
 
-# The file holding toot configuration
-CONFIG_FILE = os.environ['HOME'] + '/.config/toot/config.json'
-
-
 def get_config_file_path():
-    return CONFIG_FILE
+    """Returns the path to toot config file
+
+    Attempts to locate config home dir from XDG_CONFIG_HOME env variable.
+    See: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
+    If not found, defaults to `~/.config`.
+    """
+    config_dir = os.getenv('XDG_CONFIG_HOME', '~/.config')
+    return os.path.expanduser(config_dir + '/toot/config.json')
+
+
+CONFIG_FILE = get_config_file_path()
 
 
 def user_id(user):