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package lite
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
dbm "github.com/tendermint/tmlibs/db"
log "github.com/tendermint/tmlibs/log"
)
func TestInquirerValidPath(t *testing.T) {
assert, require := assert.New(t), require.New(t)
trust := NewDBProvider("trust", dbm.NewMemDB())
source := NewDBProvider("source", dbm.NewMemDB())
// Set up the validators to generate test blocks.
var vote int64 = 10
keys := genPrivKeys(5)
nkeys := keys.Extend(1)
// Construct a bunch of commits, each with one more height than the last.
chainID := "inquiry-test"
consHash := []byte("params")
resHash := []byte("results")
count := 50
fcz := make([]FullCommit, count)
for i := 0; i < count; i++ {
vals := keys.ToValidators(vote, 0)
nextVals := nkeys.ToValidators(vote, 0)
h := int64(1 + i)
appHash := []byte(fmt.Sprintf("h=%d", h))
fcz[i] = keys.GenFullCommit(
chainID, h, nil,
vals, nextVals,
appHash, consHash, resHash, 0, len(keys))
// Extend the keys by 1 each time.
keys = nkeys
nkeys = nkeys.Extend(1)
}
// Initialize a certifier with the initial state.
err := trust.SaveFullCommit(fcz[0])
require.Nil(err)
cert := NewInquiringCertifier(chainID, trust, source)
cert.SetLogger(log.TestingLogger())
// This should fail validation:
sh := fcz[count-1].SignedHeader
err = cert.Certify(sh)
require.NotNil(err)
// Adding a few commits in the middle should be insufficient.
for i := 10; i < 13; i++ {
err := source.SaveFullCommit(fcz[i])
require.Nil(err)
}
err = cert.Certify(sh)
assert.NotNil(err)
// With more info, we succeed.
for i := 0; i < count; i++ {
err := source.SaveFullCommit(fcz[i])
require.Nil(err)
}
err = cert.Certify(sh)
assert.Nil(err, "%+v", err)
}
func TestInquirerVerifyHistorical(t *testing.T) {
assert, require := assert.New(t), require.New(t)
trust := NewDBProvider("trust", dbm.NewMemDB())
source := NewDBProvider("source", dbm.NewMemDB())
// Set up the validators to generate test blocks.
var vote int64 = 10
keys := genPrivKeys(5)
nkeys := keys.Extend(1)
// Construct a bunch of commits, each with one more height than the last.
chainID := "inquiry-test"
count := 10
consHash := []byte("special-params")
fcz := make([]FullCommit, count)
for i := 0; i < count; i++ {
vals := keys.ToValidators(vote, 0)
nextVals := nkeys.ToValidators(vote, 0)
h := int64(1 + i)
appHash := []byte(fmt.Sprintf("h=%d", h))
resHash := []byte(fmt.Sprintf("res=%d", h))
fcz[i] = keys.GenFullCommit(
chainID, h, nil,
vals, nextVals,
appHash, consHash, resHash, 0, len(keys))
// Extend the keys by 1 each time.
keys = nkeys
nkeys = nkeys.Extend(1)
}
// Initialize a certifier with the initial state.
err := trust.SaveFullCommit(fcz[0])
require.Nil(err)
cert := NewInquiringCertifier(chainID, trust, source)
cert.SetLogger(log.TestingLogger())
// Store a few full commits as trust.
for _, i := range []int{2, 5} {
trust.SaveFullCommit(fcz[i])
}
// See if we can jump forward using trusted full commits.
// Souce doesn't have fcz[9] so cert.LastTrustedHeight wont' change.
err = source.SaveFullCommit(fcz[7])
require.Nil(err, "%+v", err)
sh := fcz[8].SignedHeader
err = cert.Certify(sh)
require.Nil(err, "%+v", err)
assert.Equal(fcz[7].Height(), cert.LastTrustedHeight())
fc_, err := trust.LatestFullCommit(chainID, fcz[8].Height(), fcz[8].Height())
require.NotNil(err, "%+v", err)
assert.Equal(fc_, (FullCommit{}))
// With fcz[9] Certify will update last trusted height.
err = source.SaveFullCommit(fcz[9])
require.Nil(err, "%+v", err)
sh = fcz[8].SignedHeader
err = cert.Certify(sh)
require.Nil(err, "%+v", err)
assert.Equal(fcz[8].Height(), cert.LastTrustedHeight())
fc_, err = trust.LatestFullCommit(chainID, fcz[8].Height(), fcz[8].Height())
require.Nil(err, "%+v", err)
assert.Equal(fc_.Height(), fcz[8].Height())
// Add access to all full commits via untrusted source.
for i := 0; i < count; i++ {
err := source.SaveFullCommit(fcz[i])
require.Nil(err)
}
// Try to check an unknown seed in the past.
sh = fcz[3].SignedHeader
err = cert.Certify(sh)
require.Nil(err, "%+v", err)
assert.Equal(fcz[8].Height(), cert.LastTrustedHeight())
// Jump all the way forward again.
sh = fcz[count-1].SignedHeader
err = cert.Certify(sh)
require.Nil(err, "%+v", err)
assert.Equal(fcz[9].Height(), cert.LastTrustedHeight())
}