Add ability to change settings via environment variables

tests/test_conf.py

@@ -0,0 +1,75 @@
+from mock import patch, Mock
+from thefuck.main import Rule
+from thefuck import conf
+
+
+def test_rules_list():
+    assert conf.RulesList(['bash', 'lisp']) == ['bash', 'lisp']
+    assert conf.RulesList(['bash', 'lisp']) == conf.RulesList(['bash', 'lisp'])
+    assert Rule('lisp', None, None, False) in conf.RulesList(['lisp'])
+    assert Rule('bash', None, None, False) not in conf.RulesList(['lisp'])
+
+
+def test_default():
+    assert Rule('test', None, None, True) in conf.DEFAULT
+    assert Rule('test', None, None, False) not in conf.DEFAULT
+    assert Rule('test', None, None, False) in (conf.DEFAULT + ['test'])
+
+
+def test_settings_defaults():
+    with patch('thefuck.conf.load_source', return_value=object()), \
+         patch('thefuck.conf.os.environ', new_callable=lambda: {}):
+        for key, val in conf.Settings.defaults.items():
+            assert getattr(conf.Settings(Mock()), key) == val
+
+
+def test_settings_from_file():
+    with patch('thefuck.conf.load_source', return_value=Mock(rules=['test'],
+                                                             wait_command=10,
+                                                             require_confirmation=True,
+                                                             no_colors=True)), \
+         patch('thefuck.conf.os.environ', new_callable=lambda: {}):
+        settings = conf.Settings(Mock())
+        assert settings.rules == ['test']
+        assert settings.wait_command == 10
+        assert settings.require_confirmation is True
+        assert settings.no_colors is True
+
+
+def test_settings_from_file_with_DEFAULT():
+    with patch('thefuck.conf.load_source', return_value=Mock(rules=conf.DEFAULT + ['test'],
+                                                             wait_command=10,
+                                                             require_confirmation=True,
+                                                             no_colors=True)), \
+         patch('thefuck.conf.os.environ', new_callable=lambda: {}):
+        settings = conf.Settings(Mock())
+        assert settings.rules == conf.DEFAULT + ['test']
+
+
+def test_settings_from_env():
+    with patch('thefuck.conf.load_source', return_value=Mock(rules=['test'],
+                                                             wait_command=10)), \
+         patch('thefuck.conf.os.environ',
+               new_callable=lambda: {'THEFUCK_RULES': 'bash:lisp',
+                                     'THEFUCK_WAIT_COMMAND': '55',
+                                     'THEFUCK_REQUIRE_CONFIRMATION': 'true',
+                                     'THEFUCK_NO_COLORS': 'false'}):
+        settings = conf.Settings(Mock())
+        assert settings.rules == ['bash', 'lisp']
+        assert settings.wait_command == 55
+        assert settings.require_confirmation is True
+        assert settings.no_colors is False
+
+
+def test_settings_from_env_with_DEFAULT():
+    with patch('thefuck.conf.load_source', return_value=Mock()), \
+         patch('thefuck.conf.os.environ', new_callable=lambda: {'THEFUCK_RULES': 'DEFAULT:bash:lisp'}):
+        settings = conf.Settings(Mock())
+        assert settings.rules == conf.DEFAULT + ['bash', 'lisp']
+
+
+def test_update_settings():
+    settings = conf.BaseSettings({'key': 'val'})
+    new_settings = settings.update(key='new-val')
+    assert new_settings.key == 'new-val'
+    assert settings.key == 'val'