message: Use Decimal::from_str("1.5") in test code
diff: @@ -3,6 +3,7 @@ use cosmwasm_std::{
  HandleResponse, HumanAddr, InitResponse, Querier, StakingMsg, StdError, StdResult, Storage,
  Uint128, WasmMsg,
  };
  +use std::str::FromStr;
  use crate::msg::{
  BalanceResponse, ClaimsResponse, HandleMsg, InitMsg, InvestmentResponse, QueryMsg,
  @@ -616,7 +617,7 @@ mod tests {
  let invest: InvestmentResponse = from_binary(&res).unwrap();
  assert_eq!(invest.token_supply, Uint128(1000));
  assert_eq!(invest.staked_tokens, coin(1500, "stake"));
  - let ratio = Decimal::one() + Decimal::percent(50);
  + let ratio = Decimal::from_str("1.5").unwrap();
  assert_eq!(invest.nominal_value, ratio);
  // we bond some other tokens and get a different issuance price (maintaining the ratio)
  @@ -721,7 +722,7 @@ mod tests {
  assert_eq!(get_claims(&deps, &bob), bobs_claim);
  // supplies updated, ratio the same (1.5)
  - let ratio = Decimal::one() + Decimal::percent(50);
  + let ratio = Decimal::from_str("1.5").unwrap();
  let res = query(&deps, QueryMsg::Investment {}).unwrap();
  let invest: InvestmentResponse = from_binary(&res).unwrap();
  