message: Add a panic test for Decimal div_assign by zero
diff: @@ -601,6 +601,14 @@ mod tests {
  assert_eq!(dec, Decimal::zero());
  }
  + #[test]
  + #[should_panic(expected = "attempt to divide by zero")]
  + fn decimal_uint128_div_assign_by_zero() {
  + // a/0
  + let mut dec = Decimal::percent(50);
  + dec /= Uint128(0);
  + }
  +
  #[test]
  fn decimal_to_string() {
  // Integers
  