2022-09-15 10:38:25 +00:00
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import std/strformat
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import pkg/asynctest
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import pkg/chronos
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import pkg/ethers
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2022-09-20 01:59:39 +00:00
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import pkg/ethers/testing
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2022-09-15 10:38:25 +00:00
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import ./hardhat
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suite "Testing helpers":
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let revertReason = "revert reason"
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let rpcResponse = "Error: VM Exception while processing transaction: " &
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fmt"reverted with reason string '{revertReason}'"
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test "checks that call reverts":
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proc call() {.async.} =
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raise newException(JsonRpcProviderError, $rpcResponse)
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check await call().reverts()
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test "checks reason for revert":
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proc call() {.async.} =
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raise newException(JsonRpcProviderError, $rpcResponse)
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check await call().reverts(revertReason)
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test "correctly indicates there was no revert":
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proc call() {.async.} = discard
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check not await call().reverts()
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test "reverts only checks JsonRpcProviderErrors":
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proc call() {.async.} =
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raise newException(ContractError, "test")
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expect ContractError:
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check await call().reverts()
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test "reverts with reason only checks JsonRpcProviderErrors":
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proc call() {.async.} =
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raise newException(ContractError, "test")
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expect ContractError:
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check await call().reverts(revertReason)
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test "reverts with reason is false when there is no revert":
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proc call() {.async.} = discard
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check not await call().reverts(revertReason)
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test "reverts is false when the revert reason doesn't match":
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proc call() {.async.} =
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raise newException(JsonRpcProviderError, "other reason")
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check not await call().reverts(revertReason)
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test "revert handles non-standard revert prefix":
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let nonStdMsg = fmt"Provider VM Exception: reverted with {revertReason}"
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proc call() {.async.} =
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raise newException(JsonRpcProviderError, nonStdMsg)
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check await call().reverts(nonStdMsg)
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type
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TestHelpers* = ref object of Contract
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method revertsWith*(self: TestHelpers,
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revertReason: string) {.base, contract, view.}
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suite "Testing helpers - provider":
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var helpersContract: TestHelpers
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var provider: JsonRpcProvider
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var snapshot: JsonNode
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var accounts: seq[Address]
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let revertReason = "revert reason"
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setup:
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provider = JsonRpcProvider.new("ws://127.0.0.1:8545")
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snapshot = await provider.send("evm_snapshot")
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accounts = await provider.listAccounts()
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let deployment = readDeployment()
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helpersContract = TestHelpers.new(!deployment.address(TestHelpers), provider)
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teardown:
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discard await provider.send("evm_revert", @[snapshot])
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test "revert works with provider":
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check await helpersContract.revertsWith(revertReason).reverts(revertReason)
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