[tests] Purge tests and start with a clean implementation of subprocess

Seems like subprocess and friends (Popen, communicate) are not so easy
to mock cleanly. Therefore, start from scratch and carefully write test
by test, until (at least) the old test coverage has been restored.

tests/test_config.py

@@ -1,52 +0,0 @@
-# pylint: disable=C0103,C0111
-
-import unittest
-import mock
-try:
-    from StringIO import StringIO
-except ImportError:
-    from io import StringIO
-
-from bumblebee.config import Config
-from bumblebee.theme import themes
-from bumblebee.engine import all_modules
-
-class TestConfig(unittest.TestCase):
-    def setUp(self):
-        self.defaultConfig = Config()
-        self.someSimpleModules = ["foo", "bar", "baz"]
-        self.someAliasModules = ["foo:a", "bar:b", "baz:c"]
-
-    def test_no_modules_by_default(self):
-        self.assertEquals(self.defaultConfig.modules(), [])
-
-    def test_simple_modules(self):
-        cfg = Config(["-m"] + self.someSimpleModules)
-        self.assertEquals(cfg.modules(), [{
-            "name": x, "module": x
-        } for x in self.someSimpleModules])
-
-    def test_alias_modules(self):
-        cfg = Config(["-m"] + self.someAliasModules)
-        self.assertEquals(cfg.modules(), [{
-            "module": x.split(":")[0],
-            "name": x.split(":")[1],
-        } for x in self.someAliasModules])
-
-    @mock.patch("sys.stdout", new_callable=StringIO)
-    @mock.patch("sys.exit")
-    def test_list_themes(self, exit, stdout):
-        cfg = Config(["-l", "themes"])
-        result = stdout.getvalue()
-        for theme in themes():
-            self.assertTrue(theme in result)
-
-    @mock.patch("sys.stdout", new_callable=StringIO)
-    @mock.patch("sys.exit")
-    def test_list_modules(self, exit, stdout):
-        cfg = Config(["-l", "modules"])
-        result = stdout.getvalue()
-        for module in all_modules():
-            self.assertTrue(module["name"] in result)
-
-# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4