nim-codex/tests/contracts/testClock.nim

49 lines
1.2 KiB
Nim
Raw Normal View History

import std/times
import pkg/chronos
2022-05-19 19:56:03 +00:00
import codex/contracts/clock
import ../ethertest
ethersuite "On-Chain Clock":
var clock: OnChainClock
setup:
clock = OnChainClock.new(provider)
await clock.start()
teardown:
await clock.stop()
test "returns the current time of the EVM":
let latestBlock = (!await provider.getBlock(BlockTag.latest))
let timestamp = latestBlock.timestamp.truncate(int64)
check clock.now() == timestamp
test "updates time with timestamp of new blocks":
let future = (getTime() + 42.years).toUnix
discard await provider.send("evm_setNextBlockTimestamp", @[%future])
discard await provider.send("evm_mine")
check clock.now() == future
test "updates time using wall-clock in-between blocks":
let past = clock.now()
await sleepAsync(chronos.seconds(1))
check clock.now() > past
test "raises when not started":
expect AssertionError:
discard OnChainClock.new(provider).now()
test "raises when stopped":
await clock.stop()
expect AssertionError:
discard clock.now()
test "handles starting multiple times":
await clock.start()
await clock.start()
test "handles stopping multiple times":
await clock.stop()
await clock.stop()