Tests are run using anvil and starknet-devnet local nodes and you need to have them available before running.
You need to have anvil running to run sx-evm tests.
Start it using yarn node:evm.
yarn test:integration:evm
You need to have both anvil and starknet-devnet running to run sx-evm tests.
Start them using yarn node:evm and yarn node:starknet.
yarn test:integration:starknet