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package lite
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
dbm "github.com/tendermint/tm-db"
mockp "github.com/tendermint/tendermint/lite2/provider/mock"
dbs "github.com/tendermint/tendermint/lite2/store/db"
"github.com/tendermint/tendermint/types"
)
func TestClient_SequentialVerification(t *testing.T) {
const (
chainID = "sequential-verification"
)
var (
keys = genPrivKeys(4)
// 20, 30, 40, 50 - the first 3 don't have 2/3, the last 3 do!
vals = keys.ToValidators(20, 10)
bTime, _ = time.Parse(time.RFC3339, "2006-01-02T15:04:05Z")
header = keys.GenSignedHeader(chainID, 1, bTime, nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys))
)
testCases := []struct {
otherHeaders map[int64]*types.SignedHeader // all except ^
vals map[int64]*types.ValidatorSet
initErr bool
verifyErr bool
}{
// good
{
map[int64]*types.SignedHeader{
// trusted header
1: header,
// interim header (3/3 signed)
2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
// last header (3/3 signed)
3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
},
map[int64]*types.ValidatorSet{
1: vals,
2: vals,
3: vals,
4: vals,
},
false,
false,
},
// bad: different first header
{
map[int64]*types.SignedHeader{
// different header
1: keys.GenSignedHeader(chainID, 1, bTime.Add(1*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
},
map[int64]*types.ValidatorSet{
1: vals,
},
true,
false,
},
// bad: 1/3 signed interim header
{
map[int64]*types.SignedHeader{
// trusted header
1: header,
// interim header (1/3 signed)
2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), len(keys)-1, len(keys)),
// last header (3/3 signed)
3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
},
map[int64]*types.ValidatorSet{
1: vals,
2: vals,
3: vals,
4: vals,
},
false,
true,
},
// bad: 1/3 signed last header
{
map[int64]*types.SignedHeader{
// trusted header
1: header,
// interim header (3/3 signed)
2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
// last header (1/3 signed)
3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), len(keys)-1, len(keys)),
},
map[int64]*types.ValidatorSet{
1: vals,
2: vals,
3: vals,
4: vals,
},
false,
true,
},
}
for _, tc := range testCases {
c, err := NewClient(
chainID,
TrustOptions{
Period: 4 * time.Hour,
Height: 1,
Hash: header.Hash(),
},
mockp.New(
chainID,
tc.otherHeaders,
tc.vals,
),
dbs.New(dbm.NewMemDB(), chainID),
SequentialVerification(),
)
if tc.initErr {
require.Error(t, err)
continue
} else {
require.NoError(t, err)
}
err = c.VerifyHeaderAtHeight(3, bTime.Add(3*time.Hour))
if tc.verifyErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
}
}
func TestClient_SkippingVerification(t *testing.T) {
const (
chainID = "skipping-verification"
)
var (
keys = genPrivKeys(4)
// 20, 30, 40, 50 - the first 3 don't have 2/3, the last 3 do!
vals = keys.ToValidators(20, 10)
bTime, _ = time.Parse(time.RFC3339, "2006-01-02T15:04:05Z")
header = keys.GenSignedHeader(chainID, 1, bTime, nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys))
)
// required for 2nd test case
newKeys := genPrivKeys(4)
newVals := newKeys.ToValidators(10, 1)
testCases := []struct {
otherHeaders map[int64]*types.SignedHeader // all except ^
vals map[int64]*types.ValidatorSet
initErr bool
verifyErr bool
}{
// good
{
map[int64]*types.SignedHeader{
// trusted header
1: header,
// last header (3/3 signed)
3: keys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, vals, vals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
},
map[int64]*types.ValidatorSet{
1: vals,
2: vals,
3: vals,
4: vals,
},
false,
false,
},
// good, val set changes 100% at height 2
{
map[int64]*types.SignedHeader{
// trusted header
1: header,
// interim header (3/3 signed)
2: keys.GenSignedHeader(chainID, 2, bTime.Add(1*time.Hour), nil, vals, newVals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(keys)),
// last header (0/4 of the original val set signed)
3: newKeys.GenSignedHeader(chainID, 3, bTime.Add(2*time.Hour), nil, newVals, newVals,
[]byte("app_hash"), []byte("cons_hash"), []byte("results_hash"), 0, len(newKeys)),
},
map[int64]*types.ValidatorSet{
1: vals,
2: vals,
3: newVals,
4: newVals,
},
false,
false,
},
}
for _, tc := range testCases {
c, err := NewClient(
chainID,
TrustOptions{
Period: 4 * time.Hour,
Height: 1,
Hash: header.Hash(),
},
mockp.New(
chainID,
tc.otherHeaders,
tc.vals,
),
dbs.New(dbm.NewMemDB(), chainID),
SkippingVerification(DefaultTrustLevel),
)
if tc.initErr {
require.Error(t, err)
continue
} else {
require.NoError(t, err)
}
err = c.VerifyHeaderAtHeight(3, bTime.Add(3*time.Hour))
if tc.verifyErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
}
}