package lite import ( "fmt" "testing" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" dbm "github.com/tendermint/tendermint/libs/db" log "github.com/tendermint/tendermint/libs/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()) }