diff --git a/bumblebee_status/modules/contrib/dunstctl.py b/bumblebee_status/modules/contrib/dunstctl.py
index 3c803a4..f082f1b 100644
--- a/bumblebee_status/modules/contrib/dunstctl.py
+++ b/bumblebee_status/modules/contrib/dunstctl.py
@@ -24,12 +24,12 @@ import util.cli
 class Module(core.module.Module):
     def __init__(self, config, theme):
         super().__init__(config, theme, core.widget.Widget(""))
-        core.input.register(self, button=core.input.LEFT_MOUSE, cmd=self.__toggle_state)
+        core.input.register(self, button=core.input.LEFT_MOUSE, cmd=self.toggle_state)
         self.__states = {"unknown": ["unknown", "critical"],
                          "true": ["muted", "warning"],
                          "false": ["unmuted"]}
 
-    def __toggle_state(self, event):
+    def toggle_state(self, event):
         util.cli.execute("dunstctl set-paused toggle", ignore_errors=True)
 
     def state(self, widget):
diff --git a/tests/modules/contrib/test_dunst.py b/tests/modules/contrib/test_dunst.py
index 2ca2d40..75e3151 100644
--- a/tests/modules/contrib/test_dunst.py
+++ b/tests/modules/contrib/test_dunst.py
@@ -1,5 +1,58 @@
 import pytest
 
+import core.config
+import modules.contrib.dunst
+
+
+def build_module():
+    return modules.contrib.dunst.Module(
+        config=core.config.Config([]),
+        theme=None
+    )
+
+
 def test_load_module():
     __import__("modules.contrib.dunst")
 
+def test_input_registration(mocker):
+   input_register = mocker.patch('core.input.register')
+
+   module = build_module()
+
+   input_register.assert_called_with(
+       module,
+       button=core.input.LEFT_MOUSE,
+       cmd=module.toggle_status
+   )
+
+def test_dunst_toggle(mocker):
+    start_command = mocker.patch('util.cli.execute')
+
+    module = build_module()
+    start_command.assert_called_with('killall -s SIGUSR2 dunst', ignore_errors=True)
+
+    toggle_command = mocker.patch('util.cli.execute')
+    module.toggle_status(None)
+    toggle_command.assert_called_with('killall -s SIGUSR1 dunst')
+
+    widget = module.widget()
+    actual = module.state(widget)
+    assert actual == ['muted', 'warning']
+
+    module.toggle_status(None)
+    toggle_command.assert_called_with('killall -s SIGUSR2 dunst')
+
+    widget = module.widget()
+    actual = module.state(widget)
+    assert actual == ['unmuted']
+
+def test_dunst_toggle_exception(mocker):
+    module = build_module()
+
+    toggle_command = mocker.patch('util.cli.execute', side_effect=Exception)
+    module.toggle_status(None)
+    toggle_command.assert_called_with('killall -s SIGUSR1 dunst')
+
+    widget = module.widget()
+    actual = module.state(widget)
+    assert actual == ['unmuted']
diff --git a/tests/modules/contrib/test_dunstctl.py b/tests/modules/contrib/test_dunstctl.py
index db77fe3..2391f7e 100644
--- a/tests/modules/contrib/test_dunstctl.py
+++ b/tests/modules/contrib/test_dunstctl.py
@@ -1,6 +1,5 @@
 import pytest
 
-import util.cli
 import core.config
 import modules.contrib.dunstctl
 
@@ -13,6 +12,25 @@ def build_module():
 def test_load_module():
     __import__("modules.contrib.dunstctl")
 
+def test_input_registration(mocker):
+   input_register = mocker.patch('core.input.register')
+
+   module = build_module()
+
+   input_register.assert_called_with(
+       module,
+       button=core.input.LEFT_MOUSE,
+       cmd=module.toggle_state
+   )
+
+def test_dunst_toggle_state(mocker):
+    command = mocker.patch('util.cli.execute')
+
+    module = build_module()
+
+    module.toggle_state(None)
+    command.assert_called_with('dunstctl set-paused toggle', ignore_errors=True)
+
 def test_dunst_running(mocker):
     command = mocker.patch('util.cli.execute', return_value=(0, "false"))