assert_in_delta Time.now.utc, b.created_at, 1
assert_in_delta Time.now.utc, b.updated_at, 1
assert_in_delta Time.now.utc + 12.hours, b.ends_at, 1
assert_in_delta Time.now.utc, b.created_at, 1
assert_in_delta Time.now.utc, b.updated_at, 1
assert_in_delta Time.now.utc + 12.hours, b.ends_at, 1