public async Task TestValidators80DutiesForEpochZeroHaveExactlyOneProposerPerSlot() { // Arrange IServiceCollection testServiceCollection = TestSystem.BuildTestServiceCollection(useStore: true); testServiceCollection.AddSingleton <IHostEnvironment>(Substitute.For <IHostEnvironment>()); testServiceCollection.AddSingleton <IEth1DataProvider>(Substitute.For <IEth1DataProvider>()); testServiceCollection.AddSingleton <IOperationPool>(Substitute.For <IOperationPool>()); ServiceProvider testServiceProvider = testServiceCollection.BuildServiceProvider(); BeaconState state = TestState.PrepareTestState(testServiceProvider); IForkChoice forkChoice = testServiceProvider.GetService <IForkChoice>(); // Get genesis store initialise MemoryStoreProvider with the state IStore store = testServiceProvider.GetService <IStore>(); await forkChoice.InitializeForkChoiceStoreAsync(store, state); TimeParameters timeParameters = testServiceProvider.GetService <IOptions <TimeParameters> >().Value; int numberOfValidators = state.Validators.Count; Console.WriteLine("Number of validators: {0}", numberOfValidators); BlsPublicKey[] publicKeys = TestKeys.PublicKeys(timeParameters).ToArray(); byte[][] privateKeys = TestKeys.PrivateKeys(timeParameters).ToArray(); for (int index = 0; index < numberOfValidators; index++) { Console.WriteLine("[{0}] priv:{1} pub:{2}", index, "0x" + BitConverter.ToString(privateKeys[index]).Replace("-", ""), publicKeys[index]); } // Act Epoch targetEpoch = new Epoch(0); var validatorPublicKeys = publicKeys.Take(numberOfValidators).ToList(); IBeaconNodeApi beaconNode = testServiceProvider.GetService <IBeaconNodeApi>(); beaconNode.ShouldBeOfType(typeof(BeaconNodeFacade)); int validatorDutyIndex = 0; List <ValidatorDuty> validatorDuties = new List <ValidatorDuty>(); var validatorDutiesResponse = await beaconNode.ValidatorDutiesAsync(validatorPublicKeys, targetEpoch, CancellationToken.None); foreach (ValidatorDuty validatorDuty in validatorDutiesResponse.Content) { validatorDuties.Add(validatorDuty); Console.WriteLine("Index [{0}], Epoch {1}, Validator {2}, : attestation slot {3}, shard {4}, proposal slot {5}", validatorDutyIndex, targetEpoch, validatorDuty.ValidatorPublicKey, validatorDuty.AttestationSlot, validatorDuty.AttestationIndex, validatorDuty.BlockProposalSlot); validatorDutyIndex++; } Console.WriteLine(); Console.WriteLine("** ValidatorDuty summary"); foreach (ValidatorDuty validatorDuty in validatorDuties) { Console.WriteLine("Index [{0}], Epoch {1}, Validator {2}, : attestation slot {3}, shard {4}, proposal slot {5}", validatorDutyIndex, targetEpoch, validatorDuty.ValidatorPublicKey, validatorDuty.AttestationSlot, validatorDuty.AttestationIndex, validatorDuty.BlockProposalSlot); } // Assert Dictionary <Slot, IGrouping <Slot, ValidatorDuty> > groupsByProposalSlot = validatorDuties .Where(x => x.BlockProposalSlot.HasValue) .GroupBy(x => x.BlockProposalSlot !.Value) .ToDictionary(x => x.Key, x => x); groupsByProposalSlot[new Slot(0)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(1)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(2)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(3)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(4)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(5)].Count().ShouldBe(1); groupsByProposalSlot[new Slot(6)].Count().ShouldBe(1); //groupsByProposalSlot[new Slot(7)].Count().ShouldBe(1); validatorDuties.Count(x => !x.BlockProposalSlot.HasValue).ShouldBe(numberOfValidators - 7); }