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125 lines
3.0 KiB
125 lines
3.0 KiB
package types
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import (
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"bytes"
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"testing"
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"github.com/stretchr/testify/assert"
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cmn "github.com/tendermint/tmlibs/common"
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ctest "github.com/tendermint/tmlibs/test"
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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] = cmn.RandBytes(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 := cmn.RandInt() % (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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assert := assert.New(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(j, idx)
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}
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assert.Equal(-1, txs.Index(nil))
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assert.Equal(-1, txs.Index(Tx("foodnwkf")))
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}
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}
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func TestValidTxProof(t *testing.T) {
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assert := assert.New(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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leaf := txs[i]
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leafHash := leaf.Hash()
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proof := txs.Proof(i)
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assert.Equal(i, proof.Index, "%d: %d", h, i)
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assert.Equal(len(txs), proof.Total, "%d: %d", h, i)
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assert.EqualValues(root, proof.RootHash, "%d: %d", h, i)
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assert.EqualValues(leaf, proof.Data, "%d: %d", h, i)
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assert.EqualValues(leafHash, proof.LeafHash(), "%d: %d", h, i)
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assert.Nil(proof.Validate(root), "%d: %d", h, i)
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assert.NotNil(proof.Validate([]byte("foobar")), "%d: %d", h, i)
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// read-write must also work
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var p2 TxProof
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bin, err := cdc.MarshalBinary(proof)
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assert.Nil(err)
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err = cdc.UnmarshalBinary(bin, &p2)
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if assert.Nil(err, "%d: %d: %+v", h, i, err) {
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assert.Nil(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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assert := assert.New(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(proof.Validate(root))
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bin, err := cdc.MarshalBinary(proof)
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assert.Nil(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 proof TxProof
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err := cdc.UnmarshalBinary(bad, &proof)
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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.Total, good.Total, "bad: %#v\ngood: %#v", proof, good)
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}
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}
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}
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