[tests/cmus] Add tests for cmus mouse interaction

see #23

bumblebee/engine.py

@@ -39,6 +39,11 @@ class Module(object):
         """Return the widgets to draw for this module"""
         return self._widgets
 
+    def widget(self, name):
+        for widget in self._widgets:
+            if widget.name == name:
+                return widget
+
     def update(self, widgets):
         """By default, update() is a NOP"""
         pass

bumblebee/input.py

@@ -27,7 +27,6 @@ class I3BarInput(object):
     """Process incoming events from the i3bar"""
     def __init__(self):
         self.running = True
-        self._thread = threading.Thread(target=read_input, args=(self,))
         self._callbacks = {}
         self.clean_exit = False
         self.global_id = str(uuid.uuid4())
@@ -36,17 +35,24 @@ class I3BarInput(object):
 
     def start(self):
         """Start asynchronous input processing"""
+        self.has_event = False
+        self.running = True
+        self._thread = threading.Thread(target=read_input, args=(self,))
         self._thread.start()
 
     def alive(self):
         """Check whether the input processing is still active"""
         return self._thread.is_alive()
 
+    def _wait(self):
+        while not self.has_event:
+            time.sleep(0.1)
+        self.has_event = False
+
     def stop(self):
         """Stop asynchronous input processing"""
         if self.need_event:
-            while not self.has_event:
-                time.sleep(0.1)
+            self._wait()
         self.running = False
         self._thread.join()
         return self.clean_exit

tests/modules/test_cmus.py

@@ -12,6 +12,8 @@ from tests.util import MockEngine, MockConfig, assertPopen
 class TestCmusModule(unittest.TestCase):
     def setUp(self):
         self.engine = MockEngine()
+        self.engine.input = I3BarInput()
+        self.engine.input.need_event = True
         self.module = Module(engine=self.engine, config={"config": MockConfig()})
 
     @mock.patch("subprocess.Popen")
@@ -27,4 +29,26 @@ class TestCmusModule(unittest.TestCase):
     def test_widgets(self):
         self.assertTrue(len(self.module.widgets()), 5)
 
+    @mock.patch("subprocess.Popen")
+    @mock.patch("sys.stdin")
+    def test_interaction(self, mock_input, mock_output):
+        events = [
+            {"widget": "cmus.shuffle", "action": "cmus-remote -S"},
+            {"widget": "cmus.repeat", "action": "cmus-remote -R"},
+            {"widget": "cmus.next", "action": "cmus-remote -n"},
+            {"widget": "cmus.prev", "action": "cmus-remote -r"},
+            {"widget": "cmus.main", "action": "cmus-remote -u"},
+        ]
+
+        for event in events:
+            mock_input.readline.return_value = json.dumps({
+                "name": self.module.id,
+                "button": bumblebee.input.LEFT_MOUSE,
+                "instance": self.module.widget(event["widget"]).id
+            })
+            self.engine.input.start()
+            self.engine.input.stop()
+            mock_input.readline.assert_any_call()
+            assertPopen(mock_output, event["action"])
+
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