nim-codex/tests/ethertest.nim

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import std/json
import pkg/asynctest
import pkg/ethers
import ./checktest
## Unit testing suite that sets up an Ethereum testing environment.
## Injects a `provider` 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 provider {.inject, used.}: JsonRpcProvider
var accounts {.inject, used.}: seq[Address]
var snapshot: JsonNode
setup:
provider = JsonRpcProvider.new("ws://localhost:8545")
snapshot = await send(provider, "evm_snapshot")
accounts = await provider.listAccounts()
teardown:
discard await send(provider, "evm_revert", @[snapshot])
body
export asynctest
export ethers except `%`