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// nolint: vetshadow
package lite_test
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/lite"
)
func TestInquirerValidPath(t *testing.T) {
assert, require := assert.New(t), require.New(t)
trust := lite.NewMemStoreProvider()
source := lite.NewMemStoreProvider()
// set up the validators to generate test blocks
var vote int64 = 10
keys := lite.GenValKeys(5)
// construct a bunch of commits, each with one more height than the last
chainID := "inquiry-test"
consHash := []byte("params")
resHash := []byte("results")
count := 50
commits := make([]lite.FullCommit, count)
for i := 0; i < count; i++ {
// extend the keys by 1 each time
keys = keys.Extend(1)
vals := keys.ToValidators(vote, 0)
h := int64(20 + 10*i)
appHash := []byte(fmt.Sprintf("h=%d", h))
commits[i] = keys.GenFullCommit(chainID, h, nil, vals, appHash, consHash, resHash, 0, len(keys))
}
// initialize a certifier with the initial state
cert := lite.NewInquiring(chainID, commits[0], trust, source)
// this should fail validation....
commit := commits[count-1].Commit
err := cert.Certify(commit)
require.NotNil(err)
// add a few seed in the middle should be insufficient
for i := 10; i < 13; i++ {
err := source.StoreCommit(commits[i])
require.Nil(err)
}
err = cert.Certify(commit)
assert.NotNil(err)
// with more info, we succeed
for i := 0; i < count; i++ {
err := source.StoreCommit(commits[i])
require.Nil(err)
}
err = cert.Certify(commit)
assert.Nil(err, "%+v", err)
}
func TestInquirerMinimalPath(t *testing.T) {
assert, require := assert.New(t), require.New(t)
trust := lite.NewMemStoreProvider()
source := lite.NewMemStoreProvider()
// set up the validators to generate test blocks
var vote int64 = 10
keys := lite.GenValKeys(5)
// construct a bunch of commits, each with one more height than the last
chainID := "minimal-path"
consHash := []byte("other-params")
count := 12
commits := make([]lite.FullCommit, count)
for i := 0; i < count; i++ {
// extend the validators, so we are just below 2/3
keys = keys.Extend(len(keys)/2 - 1)
vals := keys.ToValidators(vote, 0)
h := int64(5 + 10*i)
appHash := []byte(fmt.Sprintf("h=%d", h))
resHash := []byte(fmt.Sprintf("res=%d", h))
commits[i] = keys.GenFullCommit(chainID, h, nil, vals, appHash, consHash, resHash, 0, len(keys))
}
// initialize a certifier with the initial state
cert := lite.NewInquiring(chainID, commits[0], trust, source)
// this should fail validation....
commit := commits[count-1].Commit
err := cert.Certify(commit)
require.NotNil(err)
// add a few seed in the middle should be insufficient
for i := 5; i < 8; i++ {
err := source.StoreCommit(commits[i])
require.Nil(err)
}
err = cert.Certify(commit)
assert.NotNil(err)
// with more info, we succeed
for i := 0; i < count; i++ {
err := source.StoreCommit(commits[i])
require.Nil(err)
}
err = cert.Certify(commit)
assert.Nil(err, "%+v", err)
}
func TestInquirerVerifyHistorical(t *testing.T) {
assert, require := assert.New(t), require.New(t)
trust := lite.NewMemStoreProvider()
source := lite.NewMemStoreProvider()
// set up the validators to generate test blocks
var vote int64 = 10
keys := lite.GenValKeys(5)
// construct a bunch of commits, each with one more height than the last
chainID := "inquiry-test"
count := 10
consHash := []byte("special-params")
commits := make([]lite.FullCommit, count)
for i := 0; i < count; i++ {
// extend the keys by 1 each time
keys = keys.Extend(1)
vals := keys.ToValidators(vote, 0)
h := int64(20 + 10*i)
appHash := []byte(fmt.Sprintf("h=%d", h))
resHash := []byte(fmt.Sprintf("res=%d", h))
commits[i] = keys.GenFullCommit(chainID, h, nil, vals, appHash, consHash, resHash, 0, len(keys))
}
// initialize a certifier with the initial state
cert := lite.NewInquiring(chainID, commits[0], trust, source)
// store a few commits as trust
for _, i := range []int{2, 5} {
trust.StoreCommit(commits[i])
}
// let's see if we can jump forward using trusted commits
err := source.StoreCommit(commits[7])
require.Nil(err, "%+v", err)
check := commits[7].Commit
err = cert.Certify(check)
require.Nil(err, "%+v", err)
assert.Equal(check.Height(), cert.LastHeight())
// add access to all commits via untrusted source
for i := 0; i < count; i++ {
err := source.StoreCommit(commits[i])
require.Nil(err)
}
// try to check an unknown seed in the past
mid := commits[3].Commit
err = cert.Certify(mid)
require.Nil(err, "%+v", err)
assert.Equal(mid.Height(), cert.LastHeight())
// and jump all the way forward again
end := commits[count-1].Commit
err = cert.Certify(end)
require.Nil(err, "%+v", err)
assert.Equal(end.Height(), cert.LastHeight())
}