Make output of distance_of_time_in_words consistent

This commit fixes the output of distance_of_time_in_words when
using integer or duration arguments. Previously a distance of
more than 30 seconds would be output as 'Less than 1 minute'
when using integer arguments and '1 minute' when using two
Time instances more than 30 seconds apart.

Cherry picked from 5fdd4cd

actionpack/lib/action_view/helpers/date_helper.rb

@@ -68,10 +68,10 @@ def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false, o
         options = {
           :scope => :'datetime.distance_in_words',
         }.merge!(options)
-        
+
         from_time = from_time.to_time if from_time.respond_to?(:to_time)
         to_time = to_time.to_time if to_time.respond_to?(:to_time)
-        distance_in_minutes = (((to_time - from_time).abs)/60).round
+        distance_in_minutes = (((to_time - from_time).abs)/60.0).round
         distance_in_seconds = ((to_time - from_time).abs).round
 
         I18n.with_options :locale => options[:locale], :scope => options[:scope] do |locale|

actionpack/test/template/date_helper_test.rb

@@ -128,12 +128,29 @@ def test_distance_in_words_with_dates
   end
 
   def test_distance_in_words_with_integers
-    assert_equal "less than a minute", distance_of_time_in_words(59)
+    assert_equal "1 minute", distance_of_time_in_words(59)
     assert_equal "about 1 hour", distance_of_time_in_words(60*60)
-    assert_equal "less than a minute", distance_of_time_in_words(0, 59)
+    assert_equal "1 minute", distance_of_time_in_words(0, 59)
     assert_equal "about 1 hour", distance_of_time_in_words(60*60, 0)
   end
 
+  def test_distance_in_words_with_times
+    assert_equal "1 minute", distance_of_time_in_words(30.seconds)
+    assert_equal "1 minute", distance_of_time_in_words(59.seconds)
+    assert_equal "2 minutes", distance_of_time_in_words(119.seconds)
+    assert_equal "2 minutes", distance_of_time_in_words(1.minute + 59.seconds)
+    assert_equal "3 minutes", distance_of_time_in_words(2.minute + 30.seconds)
+    assert_equal "44 minutes", distance_of_time_in_words(44.minutes + 29.seconds)
+    assert_equal "about 1 hour", distance_of_time_in_words(44.minutes + 30.seconds)
+    assert_equal "about 1 hour", distance_of_time_in_words(60.minutes)
+
+    # include seconds
+    assert_equal "half a minute", distance_of_time_in_words(39.seconds, 0, true)
+    assert_equal "less than a minute", distance_of_time_in_words(40.seconds, 0, true)
+    assert_equal "less than a minute", distance_of_time_in_words(59.seconds, 0, true)
+    assert_equal "1 minute", distance_of_time_in_words(60.seconds, 0, true)
+  end
+
   def test_time_ago_in_words
     assert_equal "about 1 year", time_ago_in_words(1.year.ago - 1.day)
   end