import std/json import pkg/ethers import ./asynctest import ./checktest ## Unit testing suite that sets up an Ethereum testing environment. ## Injects a `ethProvider` instance, and a list of `accounts`. ## Calls the `evm_snapshot` and `evm_revert` methods to ensure that any ## changes to the blockchain do not persist. template ethersuite*(name, body) = asyncchecksuite name: var ethProvider {.inject, used.}: JsonRpcProvider var accounts {.inject, used.}: seq[Address] var snapshot: JsonNode setup: ethProvider = JsonRpcProvider.new("ws://localhost:8545") snapshot = await send(ethProvider, "evm_snapshot") accounts = await ethProvider.listAccounts() teardown: discard await send(ethProvider, "evm_revert", @[snapshot]) body export asynctest export ethers except `%`