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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/sysmon/mainlib_unittest.py b/scripts/sysmon/mainlib_unittest.py
index 6f2bdd9..bb5dc63 100644
--- a/scripts/sysmon/mainlib_unittest.py
+++ b/scripts/sysmon/mainlib_unittest.py
@@ -15,48 +15,48 @@
 
 
 class TestTimedCallback(cros_test_lib.TestCase):
-  """Tests for _TimedCallback."""
+    """Tests for _TimedCallback."""
 
-  def setUp(self):
-    patcher = mock.patch('time.time', autospec=True)
-    self.time = patcher.start()
-    self.addCleanup(patcher.stop)
+    def setUp(self):
+        patcher = mock.patch("time.time", autospec=True)
+        self.time = patcher.start()
+        self.addCleanup(patcher.stop)
 
-  def test_initial_call_should_callback(self):
-    """Test that initial call goes through."""
-    cb = mock.Mock([])
+    def test_initial_call_should_callback(self):
+        """Test that initial call goes through."""
+        cb = mock.Mock([])
 
-    self.time.return_value = 0
-    obj = mainlib._TimedCallback(cb, 10)
+        self.time.return_value = 0
+        obj = mainlib._TimedCallback(cb, 10)
 
-    obj()
-    cb.assert_called_once()
+        obj()
+        cb.assert_called_once()
 
-  def test_call_within_interval_should_not_callback(self):
-    """Test that call too soon does not callback."""
-    cb = mock.Mock([])
+    def test_call_within_interval_should_not_callback(self):
+        """Test that call too soon does not callback."""
+        cb = mock.Mock([])
 
-    self.time.return_value = 0
-    obj = mainlib._TimedCallback(cb, 10)
+        self.time.return_value = 0
+        obj = mainlib._TimedCallback(cb, 10)
 
-    obj()
-    cb.assert_called_once()
+        obj()
+        cb.assert_called_once()
 
-    cb.reset_mock()
-    obj()
-    cb.assert_not_called()
+        cb.reset_mock()
+        obj()
+        cb.assert_not_called()
 
-  def test_call_after_interval_should_callback(self):
-    """Test that later call does callback."""
-    cb = mock.Mock([])
+    def test_call_after_interval_should_callback(self):
+        """Test that later call does callback."""
+        cb = mock.Mock([])
 
-    self.time.return_value = 0
-    obj = mainlib._TimedCallback(cb, 10)
+        self.time.return_value = 0
+        obj = mainlib._TimedCallback(cb, 10)
 
-    obj()
-    cb.assert_called_once()
+        obj()
+        cb.assert_called_once()
 
-    self.time.return_value = 10
-    cb.reset_mock()
-    obj()
-    cb.assert_called_once()
+        self.time.return_value = 10
+        cb.reset_mock()
+        obj()
+        cb.assert_called_once()