Limited RPC client intended for use with automated testing. Uses pythereum to run an Ethereum client behind the scenes without the need for mining or networking. The result is an Ethereum client that provides instant results and quick feedback during development.
To install testrpc
, follow these steps. It’s recommended you perform these within a virtualenv.
$ git clone https://github.com/Consensys/testrpc
(clone this repository)cd testrpc
$ pip install -r requirements.txt
cd
into your clone of this repository, then type:
$ python testrpc.py
The RPC methods currently implemented are:
eth_coinbase
eth_accounts
eth_gasPrice
eth_blockNumber
eth_sendTransaction
eth_call
eth_getCompilers
eth_compileSolidity
eth_getCode
(only supports block number “latest”)eth_getTransactionByHash
web3_sha3
web3_clientVersion
There’s also special non-standard methods that aren’t included within the original RPC specification:
evm_reset
: No params, no return value.evm_snapshot
: No params. Returns the integer id of the snapshot created.evm_revert
: One optional param. Reverts to the snapshot id passed, or the latest snapshot.
When calling evm_reset
, the testrpc
will revert the state of its internal chain back to the genesis block and it will act as if no processing of transactions has taken place. Similarly, you can use evm_snapshot
and evm_revert
methods to save and restore the evm state as desired. Example use cases for these methods are as follows:
evm_reset
: Run once at the beginning of your test suite.evm_snapshot
: Run at the beginning of each test, snapshotting the state of the evm.evm_revert
: Run at the end of each test, reverting back to a known clean state.
MIT