1 files changed, 40 insertions, 6 deletions
diff --git a/activesupport/test/core_ext/time_with_zone_test.rb b/activesupport/test/core_ext/time_with_zone_test.rb
index 620084f27d..c3afe68378 100644
--- a/activesupport/test/core_ext/time_with_zone_test.rb
+++ b/activesupport/test/core_ext/time_with_zone_test.rb
@@ -144,6 +144,16 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal "1999-12-31T19:00:00-05:00", @twz.xmlschema(nil)
   end
 
+  def test_iso8601_with_fractional_seconds
+    @twz += Rational(1, 8)
+    assert_equal "1999-12-31T19:00:00.125-05:00", @twz.iso8601(3)
+  end
+
+  def test_rfc3339_with_fractional_seconds
+    @twz += Rational(1, 8)
+    assert_equal "1999-12-31T19:00:00.125-05:00", @twz.rfc3339(3)
+  end
+
   def test_to_yaml
     yaml = <<-EOF.strip_heredoc
       --- !ruby/object:ActiveSupport::TimeWithZone
@@ -421,11 +431,29 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal time, Time.at(time)
   end
 
-  def test_to_time
-    with_env_tz "US/Eastern" do
-      assert_equal Time, @twz.to_time.class
-      assert_equal Time.local(1999, 12, 31, 19), @twz.to_time
-      assert_equal Time.local(1999, 12, 31, 19).utc_offset, @twz.to_time.utc_offset
+  def test_to_time_with_preserve_timezone
+    with_preserve_timezone(true) do
+      with_env_tz "US/Eastern" do
+        time = @twz.to_time
+
+        assert_equal Time, time.class
+        assert_equal time.object_id, @twz.to_time.object_id
+        assert_equal Time.local(1999, 12, 31, 19), time
+        assert_equal Time.local(1999, 12, 31, 19).utc_offset, time.utc_offset
+      end
+    end
+  end
+
+  def test_to_time_without_preserve_timezone
+    with_preserve_timezone(false) do
+      with_env_tz "US/Eastern" do
+        time = @twz.to_time
+
+        assert_equal Time, time.class
+        assert_equal time.object_id, @twz.to_time.object_id
+        assert_equal Time.local(1999, 12, 31, 19), time
+        assert_equal Time.local(1999, 12, 31, 19).utc_offset, time.utc_offset
+      end
     end
   end
 
@@ -455,6 +483,10 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_equal false, ActiveSupport::TimeWithZone.new(DateTime.civil(2000), @time_zone).acts_like?(:date)
   end
 
+  def test_blank?
+    assert_not @twz.blank?
+  end
+
   def test_is_a
     assert_kind_of Time, @twz
     assert_kind_of Time, @twz
@@ -503,6 +535,8 @@ class TimeWithZoneTest < ActiveSupport::TestCase
     assert_nothing_raised do
       @twz.period
       @twz.time
+      @twz.to_datetime
+      @twz.to_time
     end
   end
 
@@ -1057,7 +1091,7 @@ class TimeWithZoneMethodsForTimeAndDateTimeTest < ActiveSupport::TestCase
     Time.zone = -9.hours
     assert_equal ActiveSupport::TimeZone["Alaska"], Time.zone
     Time.zone = nil
-    assert_equal nil, Time.zone
+    assert_nil Time.zone
   end
 
   def test_time_zone_getter_and_setter_with_zone_default_set