[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_engine.py

@@ -1,83 +0,0 @@
-# pylint: disable=C0103,C0111,W0703,W0212
-
-import shlex
-import unittest
-
-from bumblebee.error import ModuleLoadError
-from bumblebee.engine import Engine
-from bumblebee.config import Config
-import bumblebee.input
-
-from tests.util import MockOutput, MockInput
-
-class TestEngine(unittest.TestCase):
-    def setUp(self):
-        self.engine = Engine(config=Config(), output=MockOutput(), inp=MockInput())
-        self.singleWidgetModule = [{"module": "test", "name": "a"}]
-        self.testModule = "test"
-        self.invalidModule = "no-such-module"
-        self.testModuleSpec = "bumblebee.modules.{}".format(self.testModule)
-        self.testModules = [
-            {"module": "test", "name": "a"},
-            {"module": "test", "name": "b"},
-        ]
-
-    def test_stop(self):
-        self.assertTrue(self.engine.running())
-        self.engine.stop()
-        self.assertFalse(self.engine.running())
-
-    def test_load_module(self):
-        module = self.engine._load_module(self.testModule)
-        self.assertEquals(module.__module__, self.testModuleSpec)
-
-    def test_load_invalid_module(self):
-        with self.assertRaises(ModuleLoadError):
-            self.engine._load_module(self.invalidModule)
-
-    def test_load_none(self):
-        with self.assertRaises(ModuleLoadError):
-            self.engine._load_module(None)
-
-    def test_load_modules(self):
-        modules = self.engine.load_modules(self.testModules)
-        self.assertEquals(len(modules), len(self.testModules))
-        self.assertEquals(
-            [module.__module__ for module in modules],
-            [self.testModuleSpec for module in modules]
-        )
-
-    def test_run(self):
-        self.engine.load_modules(self.singleWidgetModule)
-        try:
-            self.engine.run()
-        except Exception as e:
-            self.fail(e)
-
-    def test_custom_cmd(self):
-        testmodules = [
-            { "name": "test", "button": "test.left-click", "action": "echo" },
-            { "name": "test:alias", "button": "alias.right-click", "action": "echo2" },
-        ]
-        cmd = "-m"
-        for test in testmodules:
-            cmd += " " + test["name"]
-        cmd += " -p"
-        for test in testmodules:
-            cmd += " " + test["button"] + "=" + test["action"]
-        cfg = Config(shlex.split(cmd))
-        inp = MockInput()
-        engine = Engine(config=cfg, output=MockOutput(), inp=inp)
-
-        i = 0
-        for module in engine.modules():
-            callback = inp.get_callback(module.id)
-            self.assertTrue(callback is not None)
-            self.assertEquals(callback["command"], testmodules[i]["action"])
-            if "left" in testmodules[i]["button"]:
-                self.assertTrue(callback["button"], bumblebee.input.LEFT_MOUSE)
-            if "right" in testmodules[i]["button"]:
-                self.assertTrue(callback["button"], bumblebee.input.RIGHT_MOUSE)
-            i += 1
-
-# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4