diff --git a/test/test_datequery.py b/test/test_datequery.py
index d670d329b..12ce224c4 100644
--- a/test/test_datequery.py
+++ b/test/test_datequery.py
@@ -59,8 +59,20 @@ class DateIntervalTest(unittest.TestCase):
         self.assertExcludes('1999-12..2000-02', '2000-03-01T00:00:00')
 
     def test_hour_precision_intervals(self):
+        self.assertExcludes('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T11:59:59')
+        self.assertContains('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T12:00:00')
         self.assertContains('2000-01-01T12..2000-01-01T13',
                             '2000-01-01T12:30:00')
+        self.assertContains('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T13:30:00')
+        self.assertContains('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T13:59:59')
+        self.assertExcludes('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T14:00:00')
+        self.assertExcludes('2000-01-01T12..2000-01-01T13',
+                            '2000-01-01T14:30:00')
 
     def test_unbounded_endpoints(self):
         self.assertContains('..', date=datetime.max)