github.com/prysmaticlabs/prysm@v1.4.4/beacon-chain/cache/checkpoint_state_test.go (about)

     1  package cache
     2  
     3  import (
     4  	"testing"
     5  
     6  	types "github.com/prysmaticlabs/eth2-types"
     7  	iface "github.com/prysmaticlabs/prysm/beacon-chain/state/interface"
     8  	"github.com/prysmaticlabs/prysm/beacon-chain/state/v1"
     9  	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
    10  	ethpb "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1"
    11  	"github.com/prysmaticlabs/prysm/shared/bytesutil"
    12  	"github.com/prysmaticlabs/prysm/shared/params"
    13  	"github.com/prysmaticlabs/prysm/shared/testutil/assert"
    14  	"github.com/prysmaticlabs/prysm/shared/testutil/require"
    15  	"google.golang.org/protobuf/proto"
    16  )
    17  
    18  func TestCheckpointStateCache_StateByCheckpoint(t *testing.T) {
    19  	cache := NewCheckpointStateCache()
    20  
    21  	cp1 := &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'A'}, 32)}
    22  	st, err := v1.InitializeFromProto(&pb.BeaconState{
    23  		GenesisValidatorsRoot: params.BeaconConfig().ZeroHash[:],
    24  		Slot:                  64,
    25  	})
    26  	require.NoError(t, err)
    27  
    28  	state, err := cache.StateByCheckpoint(cp1)
    29  	require.NoError(t, err)
    30  	assert.Equal(t, iface.BeaconState(nil), state, "Expected state not to exist in empty cache")
    31  
    32  	require.NoError(t, cache.AddCheckpointState(cp1, st))
    33  
    34  	state, err = cache.StateByCheckpoint(cp1)
    35  	require.NoError(t, err)
    36  
    37  	pbState1, err := v1.ProtobufBeaconState(state.InnerStateUnsafe())
    38  	require.NoError(t, err)
    39  	pbState2, err := v1.ProtobufBeaconState(st.InnerStateUnsafe())
    40  	require.NoError(t, err)
    41  	if !proto.Equal(pbState1, pbState2) {
    42  		t.Error("incorrectly cached state")
    43  	}
    44  
    45  	cp2 := &ethpb.Checkpoint{Epoch: 2, Root: bytesutil.PadTo([]byte{'B'}, 32)}
    46  	st2, err := v1.InitializeFromProto(&pb.BeaconState{
    47  		Slot: 128,
    48  	})
    49  	require.NoError(t, err)
    50  	require.NoError(t, cache.AddCheckpointState(cp2, st2))
    51  
    52  	state, err = cache.StateByCheckpoint(cp2)
    53  	require.NoError(t, err)
    54  	assert.DeepEqual(t, st2.CloneInnerState(), state.CloneInnerState(), "incorrectly cached state")
    55  
    56  	state, err = cache.StateByCheckpoint(cp1)
    57  	require.NoError(t, err)
    58  	assert.DeepEqual(t, st.CloneInnerState(), state.CloneInnerState(), "incorrectly cached state")
    59  }
    60  
    61  func TestCheckpointStateCache_MaxSize(t *testing.T) {
    62  	c := NewCheckpointStateCache()
    63  	st, err := v1.InitializeFromProto(&pb.BeaconState{
    64  		Slot: 0,
    65  	})
    66  	require.NoError(t, err)
    67  
    68  	for i := uint64(0); i < uint64(maxCheckpointStateSize+100); i++ {
    69  		require.NoError(t, st.SetSlot(types.Slot(i)))
    70  		require.NoError(t, c.AddCheckpointState(&ethpb.Checkpoint{Epoch: types.Epoch(i), Root: make([]byte, 32)}, st))
    71  	}
    72  
    73  	assert.Equal(t, maxCheckpointStateSize, len(c.cache.Keys()))
    74  }