[core/input] Move from select to epoll

Use epoll instead of select in order to be able to use level-triggered
semantics and not get stuck on the first event.

tests/modules/test_brightness.py

@@ -24,7 +24,7 @@ class TestBrightnessModule(unittest.TestCase):
         for widget in self.module.widgets():
             self.assertEquals(len(widget.full_text()), len("100%"))
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_wheel_up(self, mock_input, mock_output, mock_select):
@@ -33,7 +33,7 @@ class TestBrightnessModule(unittest.TestCase):
             "xbacklight +2%"
         )
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_wheel_down(self, mock_input, mock_output, mock_select):
@@ -42,7 +42,7 @@ class TestBrightnessModule(unittest.TestCase):
             "xbacklight -2%"
         )
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_custom_step(self, mock_input, mock_output, mock_select):

tests/modules/test_cmus.py

@@ -7,7 +7,7 @@ import mock
 import bumblebee.input
 from bumblebee.input import I3BarInput
 from bumblebee.modules.cmus import Module
-from tests.util import MockEngine, MockConfig, assertPopen
+from tests.util import MockEngine, MockConfig, assertPopen, MockEpoll
 
 class TestCmusModule(unittest.TestCase):
     def setUp(self):
@@ -29,7 +29,7 @@ class TestCmusModule(unittest.TestCase):
     def test_widgets(self):
         self.assertTrue(len(self.module.widgets()), 5)
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_interaction(self, mock_input, mock_output, mock_select):
@@ -41,7 +41,8 @@ class TestCmusModule(unittest.TestCase):
             {"widget": "cmus.main", "action": "cmus-remote -u"},
         ]
 
-        mock_select.return_value = (1,2,3)
+        mock_input.fileno.return_value = 1
+        mock_select.return_value = MockEpoll()
 
         for event in events:
             mock_input.readline.return_value = json.dumps({

tests/modules/test_cpu.py

@@ -22,7 +22,7 @@ class TestCPUModule(unittest.TestCase):
         for widget in self.module.widgets():
             self.assertEquals(len(widget.full_text()), len("100.00%"))
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_leftclick(self, mock_input, mock_output, mock_select):

tests/modules/test_disk.py

@@ -7,7 +7,7 @@ import mock
 import bumblebee.input
 from bumblebee.input import I3BarInput
 from bumblebee.modules.disk import Module
-from tests.util import MockEngine, MockConfig, assertPopen, assertStateContains
+from tests.util import MockEngine, MockConfig, assertPopen, assertStateContains, MockEpoll
 
 class MockVFS(object):
     def __init__(self, perc):
@@ -24,7 +24,7 @@ class TestDiskModule(unittest.TestCase):
         self.config.set("disk.path", "somepath")
         self.module = Module(engine=self.engine, config={"config": self.config})
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_leftclick(self, mock_input, mock_output, mock_select):
@@ -33,7 +33,7 @@ class TestDiskModule(unittest.TestCase):
             "button": bumblebee.input.LEFT_MOUSE,
             "instance": None
         })
-        mock_select.return_value = (1,2,3)
+        mock_select.return_value = MockEpoll()
         self.engine.input.start()
         self.engine.input.stop()
         mock_input.readline.assert_any_call()

tests/modules/test_load.py

@@ -17,7 +17,7 @@ class TestLoadModule(unittest.TestCase):
         self.config = MockConfig()
         self.module = Module(engine=self.engine, config={ "config": self.config })
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_leftclick(self, mock_input, mock_output, mock_select):

tests/modules/test_memory.py

@@ -21,7 +21,7 @@ class TestMemoryModule(unittest.TestCase):
         self.config = MockConfig()
         self.module = Module(engine=self.engine, config={ "config": self.config })
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_leftclick(self, mock_input, mock_output, mock_select):

tests/modules/test_pulseaudio.py

@@ -17,7 +17,7 @@ class TestPulseAudioModule(unittest.TestCase):
         self.config = MockConfig()
         self.module = Module(engine=self.engine, config={ "config": self.config })
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_leftclick(self, mock_input, mock_output, mock_select):
@@ -26,7 +26,7 @@ class TestPulseAudioModule(unittest.TestCase):
             "pactl set-source-mute @DEFAULT_SOURCE@ toggle"
         )
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_rightclick(self, mock_input, mock_output, mock_select):
@@ -35,7 +35,7 @@ class TestPulseAudioModule(unittest.TestCase):
             "pavucontrol"
         )
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_wheelup(self, mock_input, mock_output, mock_select):
@@ -44,7 +44,7 @@ class TestPulseAudioModule(unittest.TestCase):
             "pactl set-source-volume @DEFAULT_SOURCE@ +2%"
         )
 
-    @mock.patch("select.select")
+    @mock.patch("select.epoll")
     @mock.patch("subprocess.Popen")
     @mock.patch("sys.stdin")
     def test_wheeldown(self, mock_input, mock_output, mock_select):