Optimistic launches a Smockv2 simulation contract in JavaScript

According to legitimate sources, Ethereum's second development, Optimistic Ethereum, released Smock v2, a simulation contract in JavaScript, without the need to write a simulation contract in Solidity. As an optimist, smart contract testing is always difficult or confusing. Test numbers should be written in Solidity, any changes made to the test should be repeated on the test contract, and the test contract and contract plan share the same state. Smock v2 has the ability to create a contract, handle all contract work, make phone calls, create simulations supported by real contracts, manage simulations changes, etc.