Limited RPC client intended for quick testing and development. Uses ethereumjs to simulate a full client and make development of Ethereum applications much faster.
npm install -g ethereumjs-testrpc$ testrpcThe RPC methods currently implemented are:
eth_accountseth_blockNumbereth_calleth_coinbaseeth_compileSolidityeth_gasPriceeth_getBalanceeth_getBlockByNumbereth_getBlockByHasheth_getCode(only supports block number “latest”)eth_getCompilerseth_getFilterChangeseth_getStorageAteth_getTransactionByHasheth_getTransactionCounteth_getTransactionReceipteth_hashrateeth_miningeth_newBlockFiltereth_sendTransactioneth_sendRawTransactioneth_uninstallFilterweb3_clientVersion
There’s also special non-standard methods that aren’t included within the original RPC specification:
evm_snapshot: Snapshot the state of the blockchain at its current place. Takes no parameters. Returns the integer id of the snapshot created.evm_revert: Revert the state of the blockchain to a previous snapshot. Takes one parameter. Reverts to the snapshot id passed, or the latest snapshot.
These methods are really powerful within automated testing frameworks. Example uses for these methods are:
evm_snapshot: Run at the beginning of each test or test suite, snapshotting the state of the evm.evm_revert: Run at the end of each test or test suite, reverting back to a known clean state.
Run tests via:
$ npm test