SYNOPSIS

Limited RPC client intended for quick testing and development. Uses ethereumjs to simulate a full client and make development of Ethereum applications much faster.

YES, ethereumjs-testrpc supports events! 🎉

INSTALL

npm install -g ethereumjs-testrpc

USAGE

Command Line

$ testrpc <options>

Options:

--port or -p: Port number to listen on.

Library

As a Web3 provider:

var TestRPC = require("ethereumjs-testrpc");
web3.setProvider(TestRPC.provider());

As a general http server:

var TestRPC = require("ethereumjs-testrpc");
var server = TestRPC.server();
server.listen(port, function() {...});

IMPLEMENTED METHODS

The RPC methods currently implemented are:

eth_accounts
eth_blockNumber
eth_call
eth_coinbase
eth_compileSolidity
eth_estimateGas
eth_gasPrice
eth_getBalance
eth_getBlockByNumber
eth_getBlockByHash
eth_getCode (only supports block number “latest”)
eth_getCompilers
eth_getFilterChanges
eth_getFilterLogs
eth_getLogs
eth_getStorageAt
eth_getTransactionByHash
eth_getTransactionCount
eth_getTransactionReceipt
eth_hashrate
eth_mining
eth_newBlockFilter
eth_newFilter (includes log/event filters)
eth_sendTransaction
eth_sendRawTransaction
eth_uninstallFilter
web3_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.

TESTING

Run tests via:

$ npm test

LICENSE

MPL-2.0

Cryptix23 / testrpc