60 lines
1.8 KiB
Nim
60 lines
1.8 KiB
Nim
import std/times
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import pkg/chronos
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import codex/contracts/clock
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import ../ethertest
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ethersuite "On-Chain Clock":
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var clock: OnChainClock
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setup:
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clock = OnChainClock.new(provider)
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await clock.start()
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teardown:
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await clock.stop()
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test "returns the current time of the EVM":
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let latestBlock = (!await provider.getBlock(BlockTag.latest))
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let timestamp = latestBlock.timestamp.truncate(int64)
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check clock.now() == timestamp
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test "updates time with timestamp of new blocks":
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let future = (getTime() + 42.years).toUnix
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discard await provider.send("evm_setNextBlockTimestamp", @[%future])
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discard await provider.send("evm_mine")
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check clock.now() == future
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test "updates time using wall-clock in-between blocks":
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let past = clock.now()
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await sleepAsync(chronos.seconds(1))
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check clock.now() > past
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test "can wait until a certain time is reached by the chain":
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let future = clock.now() + 42 # seconds
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let waiting = clock.waitUntil(future)
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discard await provider.send("evm_setNextBlockTimestamp", @[%future])
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discard await provider.send("evm_mine")
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check await waiting.withTimeout(chronos.milliseconds(100))
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test "can wait until a certain time is reached by the wall-clock":
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let future = clock.now() + 1 # seconds
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let waiting = clock.waitUntil(future)
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check await waiting.withTimeout(chronos.seconds(2))
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test "raises when not started":
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expect AssertionDefect:
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discard OnChainClock.new(provider).now()
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test "raises when stopped":
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await clock.stop()
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expect AssertionDefect:
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discard clock.now()
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test "handles starting multiple times":
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await clock.start()
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await clock.start()
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test "handles stopping multiple times":
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await clock.stop()
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await clock.stop()
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