Add more tests to catch the "odd months" bug described in python-huma…

…nize#14.

tests/test_time.py

@@ -494,6 +494,14 @@ def test_precisedelta_one_unit_enough(
             "minutes",
             "0 minutes",
         ),
+        (dt.timedelta(days=31), "seconds", "1 month and 12 hours"),
+        (dt.timedelta(days=32), "seconds", "1 month, 1 day and 12 hours"),
+        (dt.timedelta(days=62), "seconds", "2 months and 1 day"),
+        (dt.timedelta(days=92), "seconds", "3 months and 12 hours"),
+        (dt.timedelta(days=31), "days", "1 month and 0.50 days"),
+        (dt.timedelta(days=32), "days", "1 month and 1.50 days"),
+        (dt.timedelta(days=62), "days", "2 months and 1 day"),
+        (dt.timedelta(days=92), "days", "3 months and 0.50 days"),
     ],
 )
 def test_precisedelta_multiple_units(
@@ -545,6 +553,9 @@ def test_precisedelta_multiple_units(
         (dt.timedelta(days=5, hours=4, seconds=30 * 60), "days", "%0.2f", "5.19 days"),
         (dt.timedelta(days=31), "days", "%d", "1 month"),
         (dt.timedelta(days=31.01), "days", "%d", "1 month and 1 day"),
+        (dt.timedelta(days=31.99), "days", "%d", "1 month and 1 day"),
+        (dt.timedelta(days=32), "days", "%d", "1 month and 2 days"),
+        (dt.timedelta(days=62), "days", "%d", "2 months and 1 day"),
         (dt.timedelta(days=92), "days", "%d", "3 months"),
         (dt.timedelta(days=120), "months", "%0.2f", "3.93 months"),
         (dt.timedelta(days=183), "years", "%0.1f", "0.5 years"),