public void CheckHealth_returns_expected_results([ValueSource(nameof(CheckHealthTestCases))] CheckHealthTest test) { IBlockFinder blockFinder = Substitute.For <IBlockFinder>(); ISyncServer syncServer = Substitute.For <ISyncServer>(); IBlockchainProcessor blockchainProcessor = Substitute.For <IBlockchainProcessor>(); IBlockProducer blockProducer = Substitute.For <IBlockProducer>(); IHealthHintService healthHintService = Substitute.For <IHealthHintService>(); blockchainProcessor.IsProcessingBlocks(Arg.Any <ulong?>()).Returns(test.IsProcessingBlocks); blockProducer.IsProducingBlocks(Arg.Any <ulong?>()).Returns(test.IsProducingBlocks); syncServer.GetPeerCount().Returns(test.PeerCount); BlockHeaderBuilder GetBlockHeader(int blockNumber) => Build.A.BlockHeader.WithNumber(blockNumber); blockFinder.Head.Returns(new Block(GetBlockHeader(4).TestObject)); if (test.IsSyncing) { blockFinder.FindBestSuggestedHeader().Returns(GetBlockHeader(15).TestObject); } else { blockFinder.FindBestSuggestedHeader().Returns(GetBlockHeader(2).TestObject); } IEthSyncingInfo ethSyncingInfo = new EthSyncingInfo(blockFinder); NodeHealthService nodeHealthService = new(syncServer, blockFinder, blockchainProcessor, blockProducer, new HealthChecksConfig(), healthHintService, ethSyncingInfo, test.IsMining); CheckHealthResult result = nodeHealthService.CheckHealth(); Assert.AreEqual(test.ExpectedHealthy, result.Healthy); Assert.AreEqual(test.ExpectedMessage, FormatMessages(result.Messages.Select(x => x.Message))); Assert.AreEqual(test.ExpectedLongMessage, FormatMessages(result.Messages.Select(x => x.LongMessage))); }