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-rw-r--r--activerecord/test/cases/dirty_test.rb14
1 files changed, 14 insertions, 0 deletions
diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb
index b9961a4420..c8796a94f3 100644
--- a/activerecord/test/cases/dirty_test.rb
+++ b/activerecord/test/cases/dirty_test.rb
@@ -566,6 +566,20 @@ class DirtyTest < ActiveRecord::TestCase
end
end
+ def test_datetime_attribute_can_be_updated_with_fractional_seconds
+ in_time_zone 'Paris' do
+ target = Class.new(ActiveRecord::Base)
+ target.table_name = 'topics'
+
+ written_on = Time.utc(2012, 12, 1, 12, 0, 0).in_time_zone('Paris')
+
+ topic = target.create(:written_on => written_on)
+ topic.written_on += 0.3
+
+ assert topic.written_on_changed?, 'Fractional second update not detected'
+ end
+ end
+
test "partial insert" do
with_partial_writes Person do
jon = nil