diff options
Diffstat (limited to 'activerecord/test/cases/date_time_precision_test.rb')
| -rw-r--r-- | activerecord/test/cases/date_time_precision_test.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/test/cases/date_time_precision_test.rb b/activerecord/test/cases/date_time_precision_test.rb index 51f6164138..e64a8372d0 100644 --- a/activerecord/test/cases/date_time_precision_test.rb +++ b/activerecord/test/cases/date_time_precision_test.rb @@ -27,6 +27,24 @@ if subsecond_precision_supported? assert_equal 5, Foo.columns_hash["updated_at"].precision end + def test_datetime_precision_is_truncated_on_assignment + @connection.create_table(:foos, force: true) + @connection.add_column :foos, :created_at, :datetime, precision: 0 + @connection.add_column :foos, :updated_at, :datetime, precision: 6 + + time = ::Time.now.change(nsec: 123456789) + foo = Foo.new(created_at: time, updated_at: time) + + assert_equal 0, foo.created_at.nsec + assert_equal 123456000, foo.updated_at.nsec + + foo.save! + foo.reload + + assert_equal 0, foo.created_at.nsec + assert_equal 123456000, foo.updated_at.nsec + end + def test_timestamps_helper_with_custom_precision @connection.create_table(:foos, force: true) do |t| t.timestamps precision: 4 |