Polygon Labs announced the launch of a new and improved Polygon PoS v1 test toolkit, designed to simplify the deployment, monitoring and testing of Polygon PoS Devnet networks, shorten the development cycle of new versions, and enhance the overall development process. Polygon says the testing toolkit is built on Express-CLI, an extension of Matic-CLI, and can be used to create Devnet networks, test new features and ensure all end-to-end tests pass. It can also simplify the launch process of testnet and mainnet nodes.