[tests] Add unit tests for load module

bumblebee/modules/load.py

@@ -22,7 +22,7 @@ class Module(bumblebee.engine.Module):
         self._load = [0, 0, 0]
         try:
             self._cpus = multiprocessing.cpu_count()
-        except multiprocessing.NotImplementedError as e:
+        except NotImplementedError as e:
             self._cpus = 1
         engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
             cmd="gnome-system-monitor")

tests/modules/test_load.py

@@ -0,0 +1,57 @@
+# pylint: disable=C0103,C0111
+
+import json
+import mock
+import unittest
+
+import tests.mocks as mocks
+
+from bumblebee.input import LEFT_MOUSE
+from bumblebee.modules.load import Module
+
+class TestLoadModule(unittest.TestCase):
+    def setUp(self):
+        mocks.setup_test(self, Module)
+
+        self._mp = mock.patch("bumblebee.modules.load.multiprocessing")
+        self._os = mock.patch("bumblebee.modules.load.os")
+
+        self.mp = self._mp.start()
+        self.os = self._os.start()
+
+        self.mp.cpu_count.return_value = 1
+
+    def tearDown(self):
+        self._mp.stop()
+        self._os.stop()
+        mocks.teardown_test(self)
+
+    def test_leftclick(self):
+        mocks.mouseEvent(stdin=self.stdin, button=LEFT_MOUSE, inp=self.input, module=self.module)
+        self.popen.assert_call("gnome-system-monitor")
+
+    def test_load_format(self):
+        self.os.getloadavg.return_value = [ 5.9, 1.2, 0.8 ]
+        self.module.update_all()
+        self.assertEquals(self.module.load(self.anyWidget), "5.90/1.20/0.80")
+
+    def test_warning(self):
+        self.config.set("load.critical", "1")
+        self.config.set("load.warning", "0.8")
+        self.os.getloadavg.return_value = [ 0.9, 0, 0 ]
+        self.module.update_all()
+        self.assertTrue("warning" in self.module.state(self.anyWidget))
+
+    def test_critical(self):
+        self.config.set("load.critical", "1")
+        self.config.set("load.warning", "0.8")
+        self.os.getloadavg.return_value = [ 1.1, 0, 0 ]
+        self.module.update_all()
+        self.assertTrue("critical" in self.module.state(self.anyWidget))
+
+    def test_assume_single_core(self):
+        self.mp.cpu_count.side_effect = NotImplementedError
+        module = Module(engine=self.engine, config={"config": mock.Mock() })
+        self.assertEquals(1, module._cpus)
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4