nim-dagger/tests/contracts/matchers.nim

26 lines
617 B
Nim

import std/json
import std/strutils
import pkg/asynctest
import pkg/ethers
proc revertReason*(e: ref ValueError): string =
try:
let json = parseJson(e.msg)
var msg = json{"message"}.getStr
const revertPrefix =
"Error: VM Exception while processing transaction: reverted with " &
"reason string "
msg = msg.replace(revertPrefix)
msg = msg.replace("\'", "")
return msg
except JsonParsingError:
return ""
template revertsWith*(reason, body) =
var revertReason = ""
try:
body
except ValueError as e:
revertReason = e.revertReason
check revertReason == reason