Squashed commit of the following:

Updated the supported python versions list.
    Fixed regression in displaying xposts. #173.
    Fixing a few style things.
    Added a more robust test for the tornado handler.
    Trying without pytest-cov
    Updated travis for coverage.
    Remove python 3.2 support because no unicode literals, following what praw supports.
    "Side effect is not iterable."
    Added requirements for travis.
    Renamed travis file correctly.
    Adding test configurations, got tox working.
    Adding vcr cassettes to the repo.
    Renamed requirements files.
    Split up tests and cleaned up test names.
    Tests done, still one failure.
    Treat cassettes as binary to prevent bad merging.
    Fixed a few broken tests.
    Added a timeout to notifications.
    Prepping subreddit page.
    Finished submission page tests.
    Working on submission tests.
    Fixed vcr matching on urls with params, started submission tests.
    Log cleanup.
    Still trying to fix a broken test.
    -Fixed a few pytest bugs and tweaked logging.
    Still working on subscription tests.
    Finished page tests, on to subscription page.
    Finished content tests and starting page tests.
    Added the test refresh-token file to gitignore.
    Moved functional test file out of the repository.
    Continuing work on subreddit content tests.
    Tests now match module names, cassettes are split into individual tests for faster loading.
    Linter fixes.
    Cleanup.
    Added support for nested loaders.
    Added pytest options, starting subreddit content tests.
    Back on track with loader, continuing content tests.
    Finishing submission content tests and discovered snag with loader exception handling.
    VCR up and running, continuing to implement content tests.
    Playing around with vcr.py
    Moved helper functions into terminal and new objects.py
    Fixed a few broken tests.
    Working on navigator tests.
    Reorganizing some things.
    Mocked webbrowser._tryorder for terminal test.
    Completed oauth tests.
    Progress on the oauth tests.
    Working on adding fake tornado request.
    Starting on OAuth tool tests.
    Finished curses helpers tests.
    Still working on curses helpers tests.
    Almost finished with tests on curses helpers.
    Adding tests and working on mocking stdscr.
    Starting to add tests for curses functions.
    Merge branch 'future_work' of https://github.com/michael-lazar/rtv into future_work
    Refactoring controller, still in progress.
    Renamed auth handler.
    Rename CursesHelper to CursesBase.
    Added temporary file with a possible template for func testing.
    Mixup between basename and dirname.
    Merge branch 'future_work' of https://github.com/michael-lazar/rtv into future_work
    py3 compatability for mock.
    Beginning to refactor the curses session.
    Started adding tests, improved unicode handling in the config.
    Cleanup, fixed a few typos.
    Major refactor, almost done!.
    Started a config class.
    Merge branch 'master' into future_work
    The editor now handles unicode characters in all situations.
    Fixed a few typos from previous commits.
    __main__.py formatting.
    Cleaned up history logic and moved to the config file.

tests/test_config.py

@@ -0,0 +1,143 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import os
+import codecs
+from tempfile import NamedTemporaryFile
+
+from rtv.config import Config
+
+try:
+    from unittest import mock
+except ImportError:
+    import mock
+
+
+def test_config_interface():
+    "Test setting and removing values"
+
+    config = Config(ascii=True)
+    assert config['ascii'] is True
+    config['ascii'] = False
+    assert config['ascii'] is False
+    config['ascii'] = True
+    del config['ascii']
+    assert config['ascii'] is False
+    config.update(subreddit='cfb', new_value=2.0)
+    assert config['subreddit'] == 'cfb'
+    assert config['new_value'] == 2.0
+
+
+def test_config_from_args():
+    "Ensure that command line arguments are parsed properly"
+
+    args = ['rtv',
+            '-s', 'cfb',
+            '-l', 'https://reddit.com/permalink •',
+            '--log', 'logfile.log',
+            '--ascii',
+            '--non-persistent',
+            '--clear-auth']
+
+    with mock.patch('sys.argv', ['rtv']):
+        config = Config()
+        config.from_args()
+        assert config.config == {}
+
+    with mock.patch('sys.argv', args):
+        config = Config()
+        config.from_args()
+        assert config['ascii'] is True
+        assert config['subreddit'] == 'cfb'
+        assert config['link'] == 'https://reddit.com/permalink •'
+        assert config['log'] == 'logfile.log'
+        assert config['ascii'] is True
+        assert config['persistent'] is False
+        assert config['clear_auth'] is True
+
+
+def test_config_from_file():
+    "Ensure that config file arguments are parsed properly"
+
+    args = {
+        'ascii': True,
+        'persistent': False,
+        'clear_auth': True,
+        'log': 'logfile.log',
+        'link': 'https://reddit.com/permalink •',
+        'subreddit': 'cfb'}
+
+    with NamedTemporaryFile(suffix='.cfg') as fp:
+        config = Config(config_file=fp.name)
+        config.from_file()
+        assert config.config == {}
+
+        rows = ['{0}={1}'.format(key, val) for key, val in args.items()]
+        data = '\n'.join(['[rtv]'] + rows)
+        fp.write(codecs.encode(data, 'utf-8'))
+        fp.flush()
+        config.from_file()
+        assert config.config == args
+
+
+def test_config_refresh_token():
+    "Ensure that the refresh token can be loaded, saved, and removed"
+
+    with NamedTemporaryFile(delete=False) as fp:
+        config = Config(token_file=fp.name)
+
+        # Write a new token to the file
+        config.refresh_token = 'secret_value'
+        config.save_refresh_token()
+
+        # Load a valid token from the file
+        config.refresh_token = None
+        config.load_refresh_token()
+        assert config.refresh_token == 'secret_value'
+
+        # Discard the token and delete the file
+        config.delete_refresh_token()
+        assert config.refresh_token is None
+        assert not os.path.exists(fp.name)
+
+        # Saving should create a new file
+        config.refresh_token = 'new_value'
+        config.save_refresh_token()
+
+        # Which we can read back to verify
+        config.refresh_token = None
+        config.load_refresh_token()
+        assert config.refresh_token == 'new_value'
+
+        # And delete again to clean up
+        config.delete_refresh_token()
+        assert not os.path.exists(fp.name)
+
+        # Loading from the non-existent file should return None
+        config.refresh_token = 'secret_value'
+        config.load_refresh_token()
+        assert config.refresh_token is None
+
+
+def test_config_history():
+    "Ensure that the history can be loaded and saved"
+
+    with NamedTemporaryFile(delete=False) as fp:
+        config = Config(history_file=fp.name, history_size=3)
+
+        config.history.add('link1')
+        config.history.add('link2')
+        config.history.add('link3')
+        config.history.add('link4')
+        assert len(config.history) == 4
+
+        # Saving should only write the 3 most recent links
+        config.save_history()
+        config.load_history()
+        assert len(config.history) == 3
+        assert 'link1' not in config.history
+        assert 'link4' in config.history
+
+        config.delete_history()
+        assert len(config.history) == 0
+        assert not os.path.exists(fp.name)