#1007: add test for fluctuation

1 files changed, 10 insertions, 0 deletions

diff --git a/psutil/tests/test_windows.py b/psutil/tests/test_windows.py
index a4f32315..e781d1b7 100755
--- a/psutil/tests/test_windows.py
+++ b/psutil/tests/test_windows.py
@@ -190,6 +190,16 @@ class TestSystemAPIs(unittest.TestCase):
         # Wmic time is 2 secs lower for some reason; that's OK.
         self.assertLessEqual(diff, 2)
 
+    def test_boot_time_fluctuation(self):
+        with mock('psutil._pswindows.cext.boot_time', return_value=5):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock('psutil._pswindows.cext.boot_time', return_value=4):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock('psutil._pswindows.cext.boot_time', return_value=6):
+            self.assertEqual(psutil.boot_time(), 5)
+        with mock('psutil._pswindows.cext.boot_time', return_value=333):
+            self.assertEqual(psutil.boot_time(), 333)
+
 
 # ===================================================================
 # sensors_battery()