nim-codex/tests/contracts/testClock.nim

47 lines
1.4 KiB
Nim

import std/times
import pkg/chronos
import codex/contracts/clock
import codex/utils/json
import ../ethertest
ethersuite "On-Chain Clock":
var clock: OnChainClock
setup:
clock = OnChainClock.new(ethProvider)
await clock.start()
teardown:
await clock.stop()
test "returns the current time of the EVM":
let latestBlock = (!await ethProvider.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 ethProvider.send("evm_setNextBlockTimestamp", @[%future])
discard await ethProvider.send("evm_mine")
check clock.now() == future
test "can wait until a certain time is reached by the chain":
let future = clock.now() + 42 # seconds
let waiting = clock.waitUntil(future)
discard await ethProvider.send("evm_setNextBlockTimestamp", @[%future])
discard await ethProvider.send("evm_mine")
check await waiting.withTimeout(chronos.milliseconds(100))
test "can wait until a certain time is reached by the wall-clock":
let future = clock.now() + 1 # seconds
let waiting = clock.waitUntil(future)
check await waiting.withTimeout(chronos.seconds(2))
test "handles starting multiple times":
await clock.start()
await clock.start()
test "handles stopping multiple times":
await clock.stop()
await clock.stop()