enhanced humanize()

arrow/arrow.py

@@ -1178,6 +1178,15 @@ def humanize(
 
         try:
             if granularity == "auto":
+                # Calculate day difference to handle custom cases
+                days_diff = (self._datetime.date() - dt.date()).days
+
+                if days_diff == 1:
+                    return "Yesterday"
+
+                elif days_diff == -1:
+                    return "Tomorrow"
+
                 if diff < 10:
                     return locale.describe("now", only_distance=only_distance)
 

tests/test_arrow.py

@@ -1982,8 +1982,8 @@ def test_hours(self):
     def test_day(self):
         later = self.now.shift(days=1)
 
-        assert self.now.humanize(later) == "a day ago"
-        assert later.humanize(self.now) == "in a day"
+        assert self.now.humanize(later) == "Tomorrow"
+        assert later.humanize(self.now) == "Yesterday"
 
         # regression test for issue #697
         less_than_48_hours = self.now.shift(
@@ -1997,9 +1997,6 @@ def test_day(self):
             # humanize other argument does not take raw datetime.date objects
             self.now.humanize(less_than_48_hours_date)
 
-        assert self.now.humanize(later, only_distance=True) == "a day"
-        assert later.humanize(self.now, only_distance=True) == "a day"
-
     def test_days(self):
         later = self.now.shift(days=2)
 
@@ -2055,6 +2052,17 @@ def test_month_plus_4_days(self):
         assert self.now.humanize(later) == "a month ago"
         assert later.humanize(self.now) == "in a month"
 
+    def test_humanize_now(self):
+        assert self.now.humanize() == "just now"
+
+    def test_humanize_yesterday(self):
+        past = self.now.shift(days=-1)
+        assert self.now.humanize(past) == "Yesterday"
+
+    def test_humanize_tomorrow(self):
+        future = self.now.shift(days=1)
+        assert self.now.humanize(future) == "Tomorrow"
+
     @pytest.mark.xfail(reason="known issue with humanize month limits")
     def test_months(self):
         later = self.now.shift(months=2)