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package statesync
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/mock"
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"github.com/stretchr/testify/require"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/tendermint/tendermint/p2p"
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p2pmocks "github.com/tendermint/tendermint/p2p/mocks"
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ssproto "github.com/tendermint/tendermint/proto/tendermint/statesync"
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proxymocks "github.com/tendermint/tendermint/proxy/mocks"
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)
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func TestReactor_Receive_ChunkRequest(t *testing.T) {
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testcases := map[string]struct {
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request *ssproto.ChunkRequest
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chunk []byte
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expectResponse *ssproto.ChunkResponse
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}{
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"chunk is returned": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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[]byte{1, 2, 3},
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Chunk: []byte{1, 2, 3}}},
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"empty chunk is returned, as nil": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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[]byte{},
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Chunk: nil}},
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"nil (missing) chunk is returned as missing": {
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&ssproto.ChunkRequest{Height: 1, Format: 1, Index: 1},
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nil,
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&ssproto.ChunkResponse{Height: 1, Format: 1, Index: 1, Missing: true},
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},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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// Mock ABCI connection to return local snapshots
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conn := &proxymocks.AppConnSnapshot{}
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conn.On("LoadSnapshotChunkSync", abci.RequestLoadSnapshotChunk{
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Height: tc.request.Height,
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Format: tc.request.Format,
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Chunk: tc.request.Index,
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}).Return(&abci.ResponseLoadSnapshotChunk{Chunk: tc.chunk}, nil)
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// Mock peer to store response, if found
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peer := &p2pmocks.Peer{}
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peer.On("ID").Return(p2p.ID("id"))
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var response *ssproto.ChunkResponse
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if tc.expectResponse != nil {
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peer.On("Send", ChunkChannel, mock.Anything).Run(func(args mock.Arguments) {
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msg, err := decodeMsg(args[1].([]byte))
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require.NoError(t, err)
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response = msg.(*ssproto.ChunkResponse)
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}).Return(true)
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}
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// Start a reactor and send a ssproto.ChunkRequest, then wait for and check response
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r := NewReactor(conn, nil, "")
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err := r.Start()
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require.NoError(t, err)
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defer r.Stop()
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r.Receive(ChunkChannel, peer, mustEncodeMsg(tc.request))
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time.Sleep(100 * time.Millisecond)
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assert.Equal(t, tc.expectResponse, response)
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conn.AssertExpectations(t)
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peer.AssertExpectations(t)
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})
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}
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}
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func TestReactor_Receive_SnapshotsRequest(t *testing.T) {
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testcases := map[string]struct {
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snapshots []*abci.Snapshot
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expectResponses []*ssproto.SnapshotsResponse
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}{
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"no snapshots": {nil, []*ssproto.SnapshotsResponse{}},
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">10 unordered snapshots": {
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[]*abci.Snapshot{
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{Height: 1, Format: 2, Chunks: 7, Hash: []byte{1, 2}, Metadata: []byte{1}},
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{Height: 2, Format: 2, Chunks: 7, Hash: []byte{2, 2}, Metadata: []byte{2}},
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{Height: 3, Format: 2, Chunks: 7, Hash: []byte{3, 2}, Metadata: []byte{3}},
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{Height: 1, Format: 1, Chunks: 7, Hash: []byte{1, 1}, Metadata: []byte{4}},
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{Height: 2, Format: 1, Chunks: 7, Hash: []byte{2, 1}, Metadata: []byte{5}},
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{Height: 3, Format: 1, Chunks: 7, Hash: []byte{3, 1}, Metadata: []byte{6}},
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{Height: 1, Format: 4, Chunks: 7, Hash: []byte{1, 4}, Metadata: []byte{7}},
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{Height: 2, Format: 4, Chunks: 7, Hash: []byte{2, 4}, Metadata: []byte{8}},
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{Height: 3, Format: 4, Chunks: 7, Hash: []byte{3, 4}, Metadata: []byte{9}},
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{Height: 1, Format: 3, Chunks: 7, Hash: []byte{1, 3}, Metadata: []byte{10}},
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{Height: 2, Format: 3, Chunks: 7, Hash: []byte{2, 3}, Metadata: []byte{11}},
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{Height: 3, Format: 3, Chunks: 7, Hash: []byte{3, 3}, Metadata: []byte{12}},
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},
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[]*ssproto.SnapshotsResponse{
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{Height: 3, Format: 4, Chunks: 7, Hash: []byte{3, 4}, Metadata: []byte{9}},
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{Height: 3, Format: 3, Chunks: 7, Hash: []byte{3, 3}, Metadata: []byte{12}},
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{Height: 3, Format: 2, Chunks: 7, Hash: []byte{3, 2}, Metadata: []byte{3}},
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{Height: 3, Format: 1, Chunks: 7, Hash: []byte{3, 1}, Metadata: []byte{6}},
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{Height: 2, Format: 4, Chunks: 7, Hash: []byte{2, 4}, Metadata: []byte{8}},
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{Height: 2, Format: 3, Chunks: 7, Hash: []byte{2, 3}, Metadata: []byte{11}},
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{Height: 2, Format: 2, Chunks: 7, Hash: []byte{2, 2}, Metadata: []byte{2}},
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{Height: 2, Format: 1, Chunks: 7, Hash: []byte{2, 1}, Metadata: []byte{5}},
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{Height: 1, Format: 4, Chunks: 7, Hash: []byte{1, 4}, Metadata: []byte{7}},
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{Height: 1, Format: 3, Chunks: 7, Hash: []byte{1, 3}, Metadata: []byte{10}},
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},
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},
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}
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for name, tc := range testcases {
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tc := tc
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t.Run(name, func(t *testing.T) {
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// Mock ABCI connection to return local snapshots
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conn := &proxymocks.AppConnSnapshot{}
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conn.On("ListSnapshotsSync", abci.RequestListSnapshots{}).Return(&abci.ResponseListSnapshots{
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Snapshots: tc.snapshots,
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}, nil)
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// Mock peer to catch responses and store them in a slice
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responses := []*ssproto.SnapshotsResponse{}
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peer := &p2pmocks.Peer{}
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if len(tc.expectResponses) > 0 {
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peer.On("ID").Return(p2p.ID("id"))
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peer.On("Send", SnapshotChannel, mock.Anything).Run(func(args mock.Arguments) {
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msg, err := decodeMsg(args[1].([]byte))
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require.NoError(t, err)
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responses = append(responses, msg.(*ssproto.SnapshotsResponse))
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}).Return(true)
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}
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// Start a reactor and send a SnapshotsRequestMessage, then wait for and check responses
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r := NewReactor(conn, nil, "")
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err := r.Start()
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require.NoError(t, err)
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defer r.Stop()
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r.Receive(SnapshotChannel, peer, mustEncodeMsg(&ssproto.SnapshotsRequest{}))
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time.Sleep(100 * time.Millisecond)
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assert.Equal(t, tc.expectResponses, responses)
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conn.AssertExpectations(t)
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peer.AssertExpectations(t)
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})
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}
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}
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