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155 lines
3.0 KiB
155 lines
3.0 KiB
package lite
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import (
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"fmt"
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"io/ioutil"
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stdlog "log"
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"os"
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"testing"
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"time"
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"github.com/pkg/errors"
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dbm "github.com/tendermint/tm-db"
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"github.com/tendermint/tendermint/abci/example/kvstore"
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"github.com/tendermint/tendermint/libs/log"
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httpp "github.com/tendermint/tendermint/lite2/provider/http"
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dbs "github.com/tendermint/tendermint/lite2/store/db"
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rpctest "github.com/tendermint/tendermint/rpc/test"
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)
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func TestExample_Client(t *testing.T) {
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// give Tendermint time to generate some blocks
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time.Sleep(5 * time.Second)
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dbDir, err := ioutil.TempDir("", "lite-client-example")
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if err != nil {
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stdlog.Fatal(err)
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}
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defer os.RemoveAll(dbDir)
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var (
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config = rpctest.GetConfig()
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chainID = config.ChainID()
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)
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provider, err := httpp.New(chainID, config.RPC.ListenAddress)
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if err != nil {
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stdlog.Fatal(err)
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}
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header, err := provider.SignedHeader(2)
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if err != nil {
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stdlog.Fatal(err)
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}
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db, err := dbm.NewGoLevelDB("lite-client-db", dbDir)
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if err != nil {
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stdlog.Fatal(err)
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}
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c, err := NewClient(
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chainID,
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TrustOptions{
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Period: 504 * time.Hour, // 21 days
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Height: 2,
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Hash: header.Hash(),
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},
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provider,
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dbs.New(db, chainID),
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)
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if err != nil {
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stdlog.Fatal(err)
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}
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c.SetLogger(log.TestingLogger())
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_, err = c.VerifyHeaderAtHeight(3, time.Now())
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if err != nil {
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stdlog.Fatal(err)
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}
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h, err := c.TrustedHeader(3, time.Now())
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if err != nil {
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stdlog.Fatal(err)
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}
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fmt.Println("got header", h.Height)
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// Output: got header 3
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}
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func TestExample_AutoClient(t *testing.T) {
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// give Tendermint time to generate some blocks
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time.Sleep(5 * time.Second)
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dbDir, err := ioutil.TempDir("", "lite-client-example")
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if err != nil {
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stdlog.Fatal(err)
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}
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defer os.RemoveAll(dbDir)
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var (
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config = rpctest.GetConfig()
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chainID = config.ChainID()
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)
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provider, err := httpp.New(chainID, config.RPC.ListenAddress)
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if err != nil {
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stdlog.Fatal(err)
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}
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header, err := provider.SignedHeader(2)
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if err != nil {
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stdlog.Fatal(err)
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}
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db, err := dbm.NewGoLevelDB("lite-client-db", dbDir)
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if err != nil {
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stdlog.Fatal(err)
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}
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base, err := NewClient(
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chainID,
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TrustOptions{
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Period: 504 * time.Hour, // 21 days
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Height: 2,
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Hash: header.Hash(),
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},
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provider,
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dbs.New(db, chainID),
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)
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if err != nil {
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stdlog.Fatal(err)
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}
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base.SetLogger(log.TestingLogger())
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c := NewAutoClient(base, 1*time.Second)
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defer c.Stop()
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select {
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case h := <-c.TrustedHeaders():
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fmt.Println("got header", h.Height)
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// Output: got header 3
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case err := <-c.Errs():
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switch errors.Cause(err).(type) {
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case ErrOldHeaderExpired:
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// reobtain trust height and hash
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stdlog.Fatal(err)
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default:
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// try with another full node
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stdlog.Fatal(err)
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}
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}
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}
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func TestMain(m *testing.M) {
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// start a tendermint node (and kvstore) in the background to test against
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app := kvstore.NewApplication()
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node := rpctest.StartTendermint(app)
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code := m.Run()
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// and shut down proper at the end
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rpctest.StopTendermint(node)
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os.Exit(code)
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}
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