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246 lines
6.3 KiB
246 lines
6.3 KiB
package light_test
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import (
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"context"
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"os"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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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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"github.com/tendermint/tendermint/light"
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"github.com/tendermint/tendermint/light/provider"
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httpp "github.com/tendermint/tendermint/light/provider/http"
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dbs "github.com/tendermint/tendermint/light/store/db"
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rpctest "github.com/tendermint/tendermint/rpc/test"
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"github.com/tendermint/tendermint/types"
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)
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// NOTE: these are ports of the tests from example_test.go but
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// rewritten as more conventional tests.
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// Automatically getting new headers and verifying them.
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func TestClientIntegration_Update(t *testing.T) {
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t.Parallel()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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conf, err := rpctest.CreateConfig(t.Name())
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require.NoError(t, err)
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logger := log.NewTestingLogger(t)
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// Start a test application
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app := kvstore.NewApplication()
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_, closer, err := rpctest.StartTendermint(ctx, conf, app, rpctest.SuppressStdout)
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require.NoError(t, err)
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defer func() { require.NoError(t, closer(ctx)) }()
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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 := os.MkdirTemp("", "light-client-test-update-example")
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require.NoError(t, err)
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defer os.RemoveAll(dbDir)
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chainID := conf.ChainID()
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primary, err := httpp.New(chainID, conf.RPC.ListenAddress)
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require.NoError(t, err)
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// give Tendermint time to generate some blocks
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block, err := waitForBlock(ctx, primary, 2)
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require.NoError(t, err)
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db, err := dbm.NewGoLevelDB("light-client-db", dbDir)
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require.NoError(t, err)
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c, err := light.NewClient(
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ctx,
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chainID,
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light.TrustOptions{
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Period: 504 * time.Hour, // 21 days
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Height: 2,
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Hash: block.Hash(),
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},
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primary,
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nil,
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dbs.New(db),
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light.Logger(logger),
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)
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require.NoError(t, err)
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defer func() { require.NoError(t, c.Cleanup()) }()
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// ensure Tendermint is at height 3 or higher
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_, err = waitForBlock(ctx, primary, 3)
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require.NoError(t, err)
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h, err := c.Update(ctx, time.Now())
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require.NoError(t, err)
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require.NotNil(t, h)
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require.True(t, h.Height > 2)
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}
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// Manually getting light blocks and verifying them.
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func TestClientIntegration_VerifyLightBlockAtHeight(t *testing.T) {
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t.Parallel()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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conf, err := rpctest.CreateConfig(t.Name())
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require.NoError(t, err)
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logger := log.NewTestingLogger(t)
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// Start a test application
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app := kvstore.NewApplication()
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_, closer, err := rpctest.StartTendermint(ctx, conf, app, rpctest.SuppressStdout)
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require.NoError(t, err)
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defer func() { require.NoError(t, closer(ctx)) }()
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dbDir, err := os.MkdirTemp("", "light-client-test-verify-example")
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require.NoError(t, err)
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defer os.RemoveAll(dbDir)
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chainID := conf.ChainID()
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primary, err := httpp.New(chainID, conf.RPC.ListenAddress)
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require.NoError(t, err)
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// give Tendermint time to generate some blocks
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block, err := waitForBlock(ctx, primary, 2)
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require.NoError(t, err)
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db, err := dbm.NewGoLevelDB("light-client-db", dbDir)
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require.NoError(t, err)
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c, err := light.NewClient(ctx,
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chainID,
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light.TrustOptions{
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Period: 504 * time.Hour, // 21 days
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Height: 2,
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Hash: block.Hash(),
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},
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primary,
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nil,
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dbs.New(db),
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light.Logger(logger),
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)
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require.NoError(t, err)
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defer func() { require.NoError(t, c.Cleanup()) }()
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// ensure Tendermint is at height 3 or higher
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_, err = waitForBlock(ctx, primary, 3)
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require.NoError(t, err)
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_, err = c.VerifyLightBlockAtHeight(ctx, 3, time.Now())
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require.NoError(t, err)
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h, err := c.TrustedLightBlock(3)
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require.NoError(t, err)
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require.EqualValues(t, 3, h.Height)
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}
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func waitForBlock(ctx context.Context, p provider.Provider, height int64) (*types.LightBlock, error) {
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for {
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block, err := p.LightBlock(ctx, height)
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switch err {
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case nil:
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return block, nil
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// node isn't running yet, wait 1 second and repeat
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case provider.ErrNoResponse, provider.ErrHeightTooHigh:
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timer := time.NewTimer(1 * time.Second)
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select {
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case <-ctx.Done():
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return nil, ctx.Err()
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case <-timer.C:
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}
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default:
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return nil, err
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}
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}
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}
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func TestClientStatusRPC(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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conf, err := rpctest.CreateConfig(t.Name())
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require.NoError(t, err)
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// Start a test application
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app := kvstore.NewApplication()
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_, closer, err := rpctest.StartTendermint(ctx, conf, app, rpctest.SuppressStdout)
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require.NoError(t, err)
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defer func() { require.NoError(t, closer(ctx)) }()
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dbDir, err := os.MkdirTemp("", "light-client-test-status-example")
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require.NoError(t, err)
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t.Cleanup(func() { os.RemoveAll(dbDir) })
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chainID := conf.ChainID()
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primary, err := httpp.New(chainID, conf.RPC.ListenAddress)
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require.NoError(t, err)
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// give Tendermint time to generate some blocks
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block, err := waitForBlock(ctx, primary, 2)
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require.NoError(t, err)
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db, err := dbm.NewGoLevelDB("light-client-db", dbDir)
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require.NoError(t, err)
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// In order to not create a full testnet we create the light client with no witnesses
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// and only verify the primary IP address.
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witnesses := []provider.Provider{}
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c, err := light.NewClient(ctx,
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chainID,
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light.TrustOptions{
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Period: 504 * time.Hour, // 21 days
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Height: 2,
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Hash: block.Hash(),
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},
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primary,
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witnesses,
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dbs.New(db),
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light.Logger(log.TestingLogger()),
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)
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require.NoError(t, err)
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defer func() { require.NoError(t, c.Cleanup()) }()
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lightStatus := c.Status(ctx)
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// Verify primary IP
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require.True(t, lightStatus.PrimaryID == primary.ID())
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// Verify that number of peers is equal to number of witnesses (+ 1 if the primary is not a witness)
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require.Equal(t, len(witnesses)+1*primaryNotInWitnessList(witnesses, primary), lightStatus.NumPeers)
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// Verify that the last trusted hash returned matches the stored hash of the trusted
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// block at the last trusted height.
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blockAtTrustedHeight, err := c.TrustedLightBlock(lightStatus.LastTrustedHeight)
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require.NoError(t, err)
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require.EqualValues(t, lightStatus.LastTrustedHash, blockAtTrustedHeight.Hash())
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}
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// If the primary is not in the witness list, we will return 1
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// Otherwise, return 0
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func primaryNotInWitnessList(witnesses []provider.Provider, primary provider.Provider) int {
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for _, el := range witnesses {
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if el == primary {
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return 0
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}
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}
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return 1
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}
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