public async Task ChainNoAttestations()
{
// Arrange
IServiceProvider testServiceProvider = TestSystem.BuildTestServiceProvider(useStore: true);
BeaconState state = TestState.PrepareTestState(testServiceProvider);
MiscellaneousParameters miscellaneousParameters = testServiceProvider.GetService <IOptions <MiscellaneousParameters> >().Value;
MaxOperationsPerBlock maxOperationsPerBlock = testServiceProvider.GetService <IOptions <MaxOperationsPerBlock> >().Value;
// Initialization
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
ForkChoice forkChoice = testServiceProvider.GetService <ForkChoice>();
IStore store = forkChoice.GetGenesisStore(state);
// On receiving a block of `GENESIS_SLOT + 1` slot
BeaconBlock block1 = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, state, signed: true);
TestState.StateTransitionAndSignBlock(testServiceProvider, state, block1);
await AddBlockToStore(testServiceProvider, store, block1);
// On receiving a block of next epoch
BeaconBlock block2 = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, state, signed: true);
TestState.StateTransitionAndSignBlock(testServiceProvider, state, block2);
await AddBlockToStore(testServiceProvider, store, block2);
// Act
Hash32 headRoot = await forkChoice.GetHeadAsync(store);
// Assert
Hash32 expectedRoot = cryptographyService.SigningRoot(block2);
headRoot.ShouldBe(expectedRoot);
}
public async Task GenesisHead()
{
// Arrange
IServiceProvider testServiceProvider = TestSystem.BuildTestServiceProvider(useStore: true);
BeaconState state = TestState.PrepareTestState(testServiceProvider);
MiscellaneousParameters miscellaneousParameters = testServiceProvider.GetService <IOptions <MiscellaneousParameters> >().Value;
TimeParameters timeParameters = testServiceProvider.GetService <IOptions <TimeParameters> >().Value;
StateListLengths stateListLengths = testServiceProvider.GetService <IOptions <StateListLengths> >().Value;
MaxOperationsPerBlock maxOperationsPerBlock = testServiceProvider.GetService <IOptions <MaxOperationsPerBlock> >().Value;
JsonSerializerOptions options = new System.Text.Json.JsonSerializerOptions {
WriteIndented = true
};
options.ConfigureNethermindCore2();
string debugState = System.Text.Json.JsonSerializer.Serialize(state, options);
// Initialization
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
ForkChoice forkChoice = testServiceProvider.GetService <ForkChoice>();
IStore store = forkChoice.GetGenesisStore(state);
// Act
Hash32 headRoot = await forkChoice.GetHeadAsync(store);
// Assert
Hash32 stateRoot = cryptographyService.HashTreeRoot(state);
BeaconBlock genesisBlock = new BeaconBlock(stateRoot);
Hash32 expectedRoot = cryptographyService.SigningRoot(genesisBlock);
headRoot.ShouldBe(expectedRoot);
}
public async Task ShorterChainButHeavierWeight()
{
// Arrange
IServiceProvider testServiceProvider = TestSystem.BuildTestServiceProvider(useStore: true);
BeaconState state = TestState.PrepareTestState(testServiceProvider);
MiscellaneousParameters miscellaneousParameters = testServiceProvider.GetService <IOptions <MiscellaneousParameters> >().Value;
MaxOperationsPerBlock maxOperationsPerBlock = testServiceProvider.GetService <IOptions <MaxOperationsPerBlock> >().Value;
// Initialization
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
ForkChoice forkChoice = testServiceProvider.GetService <ForkChoice>();
IStore store = forkChoice.GetGenesisStore(state);
BeaconState genesisState = BeaconState.Clone(state);
// build longer tree
Hash32 longRoot = default;
BeaconState longState = BeaconState.Clone(genesisState);
for (int i = 0; i < 3; i++)
{
BeaconBlock longBlock = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, longState, signed: true);
TestState.StateTransitionAndSignBlock(testServiceProvider, longState, longBlock);
await AddBlockToStore(testServiceProvider, store, longBlock);
if (i == 2)
{
longRoot = cryptographyService.SigningRoot(longBlock);
}
}
// build short tree
BeaconState shortState = BeaconState.Clone(genesisState);
BeaconBlock shortBlock = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, shortState, signed: true);
shortBlock.Body.SetGraffiti(new Bytes32(Enumerable.Repeat((byte)0x42, 32).ToArray()));
TestBlock.SignBlock(testServiceProvider, shortState, shortBlock, ValidatorIndex.None);
TestState.StateTransitionAndSignBlock(testServiceProvider, shortState, shortBlock);
await AddBlockToStore(testServiceProvider, store, shortBlock);
Attestation shortAttestation = TestAttestation.GetValidAttestation(testServiceProvider, shortState, shortBlock.Slot, CommitteeIndex.None, signed: true);
await AddAttestationToStore(testServiceProvider, store, shortAttestation);
// Act
Hash32 headRoot = await forkChoice.GetHeadAsync(store);
// Assert
Hash32 expectedRoot = cryptographyService.SigningRoot(shortBlock);
headRoot.ShouldBe(expectedRoot);
headRoot.ShouldNotBe(longRoot);
}
public async Task SplitTieBreakerNoAttestations()
{
// Arrange
IServiceProvider testServiceProvider = TestSystem.BuildTestServiceProvider(useStore: true);
BeaconState state = TestState.PrepareTestState(testServiceProvider);
MiscellaneousParameters miscellaneousParameters = testServiceProvider.GetService <IOptions <MiscellaneousParameters> >().Value;
MaxOperationsPerBlock maxOperationsPerBlock = testServiceProvider.GetService <IOptions <MaxOperationsPerBlock> >().Value;
// Initialization
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
ForkChoice forkChoice = testServiceProvider.GetService <ForkChoice>();
IStore store = forkChoice.GetGenesisStore(state);
BeaconState genesisState = BeaconState.Clone(state);
// block at slot 1
BeaconState block1State = BeaconState.Clone(genesisState);
BeaconBlock block1 = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, block1State, signed: true);
TestState.StateTransitionAndSignBlock(testServiceProvider, block1State, block1);
await AddBlockToStore(testServiceProvider, store, block1);
Hash32 block1Root = cryptographyService.SigningRoot(block1);
// build short tree
BeaconState block2State = BeaconState.Clone(genesisState);
BeaconBlock block2 = TestBlock.BuildEmptyBlockForNextSlot(testServiceProvider, block2State, signed: true);
block2.Body.SetGraffiti(new Bytes32(Enumerable.Repeat((byte)0x42, 32).ToArray()));
TestBlock.SignBlock(testServiceProvider, block2State, block2, ValidatorIndex.None);
TestState.StateTransitionAndSignBlock(testServiceProvider, block2State, block2);
await AddBlockToStore(testServiceProvider, store, block2);
Hash32 block2Root = cryptographyService.SigningRoot(block2);
// Act
Hash32 headRoot = await forkChoice.GetHeadAsync(store);
// Assert
Console.WriteLine("block1 {0}", block1Root);
Console.WriteLine("block2 {0}", block2Root);
Hash32 highestRoot = block1Root.CompareTo(block2Root) > 0 ? block1Root : block2Root;
Console.WriteLine("highest {0}", highestRoot);
headRoot.ShouldBe(highestRoot);
}
