package v0 import ( "context" "crypto/sha256" "testing" "github.com/stretchr/testify/require" abciclient "github.com/tendermint/tendermint/abci/client" "github.com/tendermint/tendermint/abci/example/kvstore" abci "github.com/tendermint/tendermint/abci/types" "github.com/tendermint/tendermint/internal/mempool" "github.com/tendermint/tendermint/types" ) func TestCacheAfterUpdate(t *testing.T) { app := kvstore.NewApplication() cc := abciclient.NewLocalCreator(app) mp, cleanup := newMempoolWithApp(cc) defer cleanup() // reAddIndices & txsInCache can have elements > numTxsToCreate // also assumes max index is 255 for convenience // txs in cache also checks order of elements tests := []struct { numTxsToCreate int updateIndices []int reAddIndices []int txsInCache []int }{ {1, []int{}, []int{1}, []int{1, 0}}, // adding new txs works {2, []int{1}, []int{}, []int{1, 0}}, // update doesn't remove tx from cache {2, []int{2}, []int{}, []int{2, 1, 0}}, // update adds new tx to cache {2, []int{1}, []int{1}, []int{1, 0}}, // re-adding after update doesn't make dupe } for tcIndex, tc := range tests { for i := 0; i < tc.numTxsToCreate; i++ { tx := types.Tx{byte(i)} err := mp.CheckTx(context.Background(), tx, nil, mempool.TxInfo{}) require.NoError(t, err) } updateTxs := []types.Tx{} for _, v := range tc.updateIndices { tx := types.Tx{byte(v)} updateTxs = append(updateTxs, tx) } err := mp.Update(int64(tcIndex), updateTxs, abciResponses(len(updateTxs), abci.CodeTypeOK), nil, nil) require.NoError(t, err) for _, v := range tc.reAddIndices { tx := types.Tx{byte(v)} _ = mp.CheckTx(context.Background(), tx, nil, mempool.TxInfo{}) } cache := mp.cache.(*mempool.LRUTxCache) node := cache.GetList().Front() counter := 0 for node != nil { require.NotEqual(t, len(tc.txsInCache), counter, "cache larger than expected on testcase %d", tcIndex) nodeVal := node.Value.([sha256.Size]byte) expectedBz := sha256.Sum256([]byte{byte(tc.txsInCache[len(tc.txsInCache)-counter-1])}) // Reference for reading the errors: // >>> sha256('\x00').hexdigest() // '6e340b9cffb37a989ca544e6bb780a2c78901d3fb33738768511a30617afa01d' // >>> sha256('\x01').hexdigest() // '4bf5122f344554c53bde2ebb8cd2b7e3d1600ad631c385a5d7cce23c7785459a' // >>> sha256('\x02').hexdigest() // 'dbc1b4c900ffe48d575b5da5c638040125f65db0fe3e24494b76ea986457d986' require.Equal(t, expectedBz, nodeVal, "Equality failed on index %d, tc %d", counter, tcIndex) counter++ node = node.Next() } require.Equal(t, len(tc.txsInCache), counter, "cache smaller than expected on testcase %d", tcIndex) mp.Flush() } }