Merge pull request rails#52084 from jhawthorn/time_with_zone_always_time

Remove dead code for DateTime-backed TimeWithZone

activesupport/lib/active_support/time_with_zone.rb

@@ -300,7 +300,7 @@ def +(other)
       if duration_of_variable_length?(other)
         method_missing(:+, other)
       else
-        result = utc.acts_like?(:date) ? utc.since(other) : utc + other rescue utc.since(other)
+        result = utc + other
         result.in_time_zone(time_zone)
       end
     end
@@ -336,7 +336,7 @@ def -(other)
       elsif duration_of_variable_length?(other)
         method_missing(:-, other)
       else
-        result = utc.acts_like?(:date) ? utc.ago(other) : utc - other rescue utc.ago(other)
+        result = utc - other
         result.in_time_zone(time_zone)
       end
     end
@@ -537,7 +537,6 @@ def respond_to?(sym, include_priv = false)
     # Ensure proxy class responds to all methods that underlying time instance
     # responds to.
     def respond_to_missing?(sym, include_priv)
-      return false if sym.to_sym == :acts_like_date?
       time.respond_to?(sym, include_priv)
     end
 

activesupport/test/core_ext/time_with_zone_test.rb

@@ -394,9 +394,10 @@ def test_plus_with_integer_when_self_wraps_datetime
     assert_equal DateTime.civil(1999, 12, 31, 19, 0, 5), (twz + 5).time
   end
 
-  def test_plus_when_crossing_time_class_limit
-    twz = ActiveSupport::TimeWithZone.new(Time.utc(2038, 1, 19), @time_zone)
-    assert_equal [0, 0, 19, 19, 1, 2038], (twz + 86_400).to_a[0, 6]
+  def test_no_limit_on_times
+    twz = ActiveSupport::TimeWithZone.new(Time.utc(2000, 1, 1), @time_zone)
+    assert_equal [0, 0, 19, 31, 12, 11999], (twz + 10_000.years).to_a[0, 6]
+    assert_equal [0, 0, 19, 31, 12, -8001], (twz - 10_000.years).to_a[0, 6]
   end
 
   def test_plus_with_duration