Revert "delete everything" (includes everything non-go-crypto)

This reverts commit 96a3502

types/evidence_test.go

@@ -0,0 +1,74 @@
+package types
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type voteData struct {
+	vote1 *Vote
+	vote2 *Vote
+	valid bool
+}
+
+func makeVote(val PrivValidator, chainID string, valIndex int, height int64, round, step int, blockID BlockID) *Vote {
+	v := &Vote{
+		ValidatorAddress: val.GetAddress(),
+		ValidatorIndex:   valIndex,
+		Height:           height,
+		Round:            round,
+		Type:             byte(step),
+		BlockID:          blockID,
+	}
+	err := val.SignVote(chainID, v)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+func TestEvidence(t *testing.T) {
+	val := NewMockPV()
+	val2 := NewMockPV()
+	blockID := makeBlockID("blockhash", 1000, "partshash")
+	blockID2 := makeBlockID("blockhash2", 1000, "partshash")
+	blockID3 := makeBlockID("blockhash", 10000, "partshash")
+	blockID4 := makeBlockID("blockhash", 10000, "partshash2")
+
+	chainID := "mychain"
+
+	vote1 := makeVote(val, chainID, 0, 10, 2, 1, blockID)
+	badVote := makeVote(val, chainID, 0, 10, 2, 1, blockID)
+	err := val2.SignVote(chainID, badVote)
+	if err != nil {
+		panic(err)
+	}
+
+	cases := []voteData{
+		{vote1, makeVote(val, chainID, 0, 10, 2, 1, blockID2), true}, // different block ids
+		{vote1, makeVote(val, chainID, 0, 10, 2, 1, blockID3), true},
+		{vote1, makeVote(val, chainID, 0, 10, 2, 1, blockID4), true},
+		{vote1, makeVote(val, chainID, 0, 10, 2, 1, blockID), false},     // wrong block id
+		{vote1, makeVote(val, "mychain2", 0, 10, 2, 1, blockID2), false}, // wrong chain id
+		{vote1, makeVote(val, chainID, 1, 10, 2, 1, blockID2), false},    // wrong val index
+		{vote1, makeVote(val, chainID, 0, 11, 2, 1, blockID2), false},    // wrong height
+		{vote1, makeVote(val, chainID, 0, 10, 3, 1, blockID2), false},    // wrong round
+		{vote1, makeVote(val, chainID, 0, 10, 2, 2, blockID2), false},    // wrong step
+		{vote1, makeVote(val2, chainID, 0, 10, 2, 1, blockID), false},    // wrong validator
+		{vote1, badVote, false},                                          // signed by wrong key
+	}
+
+	pubKey := val.GetPubKey()
+	for _, c := range cases {
+		ev := &DuplicateVoteEvidence{
+			VoteA: c.vote1,
+			VoteB: c.vote2,
+		}
+		if c.valid {
+			assert.Nil(t, ev.Verify(chainID, pubKey), "evidence should be valid")
+		} else {
+			assert.NotNil(t, ev.Verify(chainID, pubKey), "evidence should be invalid")
+		}
+	}
+}