diff --git a/tests/test_i3barinput.py b/tests/test_i3barinput.py
new file mode 100644
index 0000000..fe41753
--- /dev/null
+++ b/tests/test_i3barinput.py
@@ -0,0 +1,108 @@
+# pylint: disable=C0103,C0111
+
+import json
+import mock
+import unittest
+
+import mocks
+
+from bumblebee.input import I3BarInput, LEFT_MOUSE, RIGHT_MOUSE
+
+class TestI3BarInput(unittest.TestCase):
+    def setUp(self):
+        self.input = I3BarInput()
+        self.input.need_event = True
+
+        self._stdin = mock.patch("bumblebee.input.sys.stdin")
+        self.stdin = self._stdin.start()
+        self._select = mock.patch("bumblebee.input.select")
+        self.select = self._select.start()
+        self.popen = mocks.MockPopen()
+
+        self.stdin.fileno.return_value = 1
+        epoll = mock.Mock()
+        self.select.epoll.return_value = epoll
+
+        epoll.poll.return_value = [(self.stdin.fileno.return_value, 2)]
+
+        self.anyModule = mocks.MockModule()
+        self.anotherModule = mocks.MockModule()
+        self.anyWidget = mocks.MockWidget("some-widget")
+        self.anotherWidget = mocks.MockWidget("another-widget")
+        self.anyData = self.invalidData = "any data"
+        self.invalidEvent = json.dumps({"name": None, "instance": None, "button": 1})
+        self.incompleteEvent = json.dumps({"button": 1})
+        self.anyCommand = "this is a command with arguments"
+
+        self._called = 0
+
+    def tearDown(self):
+        self._stdin.stop()
+        self._select.stop()
+        self.popen.cleanup()
+
+    def callback(self, event):
+        self._called += 1
+
+    def calls(self):
+        rv = self._called
+        self._called = 0
+        return rv
+
+    def test_read_event(self):
+        self.stdin.readline.return_value = self.anyData
+        self.input.start()
+        self.input.stop()
+        self.stdin.readline.assert_any_call()
+
+    def test_ignore_invalid_input(self):
+        for data in [ self.invalidData, self.incompleteEvent, self.invalidEvent ]:
+            self.stdin.readline.return_value = data
+            self.input.start()
+            self.assertEquals(self.input.alive(), True)
+            self.assertEquals(self.input.stop(), True)
+            self.stdin.readline.assert_any_call()
+
+    def test_global_callback(self):
+        self.input.register_callback(None, button=LEFT_MOUSE, cmd=self.callback)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin)
+        self.assertTrue(self.calls() > 0)
+
+    def test_remove_global_callback(self):
+        self.test_global_callback()
+        self.input.deregister_callbacks(None)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin)
+        self.assertTrue(self.calls() == 0)
+
+    def test_global_callback_wrong_button(self):
+        self.input.register_callback(None, button=LEFT_MOUSE, cmd=self.callback)
+        mocks.mouseEvent(button=RIGHT_MOUSE, inp=self.input, stdin=self.stdin)
+        self.assertTrue(self.calls() == 0)
+
+    def test_module_callback(self):
+        self.input.register_callback(self.anyModule, button=LEFT_MOUSE, cmd=self.callback)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anyModule)
+        self.assertTrue(self.calls() > 0)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anotherModule)
+        self.assertTrue(self.calls() == 0)
+
+    def test_remove_module_callback(self):
+        self.test_module_callback()
+        self.input.deregister_callbacks(self.anyModule)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anyModule)
+        self.assertTrue(self.calls() == 0)
+
+    def test_widget_callback(self):
+        self.input.register_callback(self.anyWidget, button=LEFT_MOUSE, cmd=self.callback)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anyWidget)
+        self.assertTrue(self.calls() > 0)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anotherWidget)
+        self.assertTrue(self.calls() == 0)
+
+    def test_widget_cmd_callback(self):
+        self.input.register_callback(self.anyWidget, button=LEFT_MOUSE, cmd=self.anyCommand)
+        mocks.mouseEvent(button=LEFT_MOUSE, inp=self.input, stdin=self.stdin, module=self.anyWidget)
+        self.popen.assert_call(self.anyCommand)
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4