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152 lines
3.7 KiB
152 lines
3.7 KiB
package types
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import (
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"bytes"
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mrand "math/rand"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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tmrand "github.com/tendermint/tendermint/libs/rand"
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ctest "github.com/tendermint/tendermint/libs/test"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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)
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func makeTxs(cnt, size int) Txs {
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txs := make(Txs, cnt)
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for i := 0; i < cnt; i++ {
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txs[i] = tmrand.Bytes(size)
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}
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return txs
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}
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func randInt(low, high int) int {
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off := mrand.Int() % (high - low)
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return low + off
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}
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func TestTxIndex(t *testing.T) {
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for i := 0; i < 20; i++ {
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txs := makeTxs(15, 60)
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for j := 0; j < len(txs); j++ {
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tx := txs[j]
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idx := txs.Index(tx)
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assert.Equal(t, j, idx)
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}
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assert.Equal(t, -1, txs.Index(nil))
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assert.Equal(t, -1, txs.Index(Tx("foodnwkf")))
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}
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}
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func TestTxIndexByHash(t *testing.T) {
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for i := 0; i < 20; i++ {
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txs := makeTxs(15, 60)
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for j := 0; j < len(txs); j++ {
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tx := txs[j]
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idx := txs.IndexByHash(tx.Hash())
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assert.Equal(t, j, idx)
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}
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assert.Equal(t, -1, txs.IndexByHash(nil))
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assert.Equal(t, -1, txs.IndexByHash(Tx("foodnwkf").Hash()))
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}
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}
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func TestValidTxProof(t *testing.T) {
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cases := []struct {
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txs Txs
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}{
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{Txs{{1, 4, 34, 87, 163, 1}}},
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{Txs{{5, 56, 165, 2}, {4, 77}}},
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{Txs{Tx("foo"), Tx("bar"), Tx("baz")}},
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{makeTxs(20, 5)},
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{makeTxs(7, 81)},
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{makeTxs(61, 15)},
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}
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for h, tc := range cases {
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txs := tc.txs
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root := txs.Hash()
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// make sure valid proof for every tx
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for i := range txs {
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tx := []byte(txs[i])
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proof := txs.Proof(i)
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assert.EqualValues(t, i, proof.Proof.Index, "%d: %d", h, i)
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assert.EqualValues(t, len(txs), proof.Proof.Total, "%d: %d", h, i)
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assert.EqualValues(t, root, proof.RootHash, "%d: %d", h, i)
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assert.EqualValues(t, tx, proof.Data, "%d: %d", h, i)
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assert.EqualValues(t, txs[i].Hash(), proof.Leaf(), "%d: %d", h, i)
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assert.Nil(t, proof.Validate(root), "%d: %d", h, i)
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assert.NotNil(t, proof.Validate([]byte("foobar")), "%d: %d", h, i)
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// read-write must also work
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var (
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p2 TxProof
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pb2 tmproto.TxProof
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)
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pbProof := proof.ToProto()
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bin, err := pbProof.Marshal()
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require.NoError(t, err)
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err = pb2.Unmarshal(bin)
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require.NoError(t, err)
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p2, err = TxProofFromProto(pb2)
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if assert.Nil(t, err, "%d: %d: %+v", h, i, err) {
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assert.Nil(t, p2.Validate(root), "%d: %d", h, i)
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}
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}
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}
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}
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func TestTxProofUnchangable(t *testing.T) {
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// run the other test a bunch...
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for i := 0; i < 40; i++ {
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testTxProofUnchangable(t)
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}
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}
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func testTxProofUnchangable(t *testing.T) {
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// make some proof
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txs := makeTxs(randInt(2, 100), randInt(16, 128))
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root := txs.Hash()
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i := randInt(0, len(txs)-1)
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proof := txs.Proof(i)
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// make sure it is valid to start with
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assert.Nil(t, proof.Validate(root))
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pbProof := proof.ToProto()
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bin, err := pbProof.Marshal()
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require.NoError(t, err)
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// try mutating the data and make sure nothing breaks
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for j := 0; j < 500; j++ {
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bad := ctest.MutateByteSlice(bin)
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if !bytes.Equal(bad, bin) {
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assertBadProof(t, root, bad, proof)
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}
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}
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}
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// This makes sure that the proof doesn't deserialize into something valid.
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func assertBadProof(t *testing.T, root []byte, bad []byte, good TxProof) {
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var (
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proof TxProof
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pbProof tmproto.TxProof
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)
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err := pbProof.Unmarshal(bad)
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if err == nil {
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proof, err = TxProofFromProto(pbProof)
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if err == nil {
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err = proof.Validate(root)
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if err == nil {
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// XXX Fix simple merkle proofs so the following is *not* OK.
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// This can happen if we have a slightly different total (where the
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// path ends up the same). If it is something else, we have a real
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// problem.
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assert.NotEqual(t, proof.Proof.Total, good.Proof.Total, "bad: %#v\ngood: %#v", proof, good)
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}
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}
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}
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}
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