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https://github.com/fluencelabs/tendermint
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1871a7c3d0
The certifier package is renamed to light. This is more descriptive especially in the wider blockchain context. Moreover we are building light-clients using the light package. This also adds godocs to all exported functions. Furthermore it introduces some extra error handling. I've added one TODO where I would like someone else's opinion on how to handle the error.
97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
package files_test
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import (
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"bytes"
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"errors"
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"io/ioutil"
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/light"
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lightErr "github.com/tendermint/tendermint/light/errors"
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"github.com/tendermint/tendermint/light/files"
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)
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func checkEqual(stored, loaded light.FullCommit, chainID string) error {
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err := loaded.ValidateBasic(chainID)
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if err != nil {
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return err
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}
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if !bytes.Equal(stored.ValidatorsHash(), loaded.ValidatorsHash()) {
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return errors.New("Different block hashes")
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}
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return nil
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}
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func TestFileProvider(t *testing.T) {
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assert, require := assert.New(t), require.New(t)
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dir, err := ioutil.TempDir("", "fileprovider-test")
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assert.Nil(err)
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defer os.RemoveAll(dir)
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p := files.NewProvider(dir)
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chainID := "test-files"
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appHash := []byte("some-data")
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keys := light.GenValKeys(5)
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count := 10
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// make a bunch of seeds...
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seeds := make([]light.FullCommit, count)
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for i := 0; i < count; i++ {
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// two seeds for each validator, to check how we handle dups
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// (10, 0), (10, 1), (10, 1), (10, 2), (10, 2), ...
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vals := keys.ToValidators(10, int64(count/2))
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h := 20 + 10*i
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check := keys.GenCommit(chainID, h, nil, vals, appHash, 0, 5)
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seeds[i] = light.NewFullCommit(check, vals)
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}
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// check provider is empty
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seed, err := p.GetByHeight(20)
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require.NotNil(err)
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assert.True(lightErr.IsCommitNotFoundErr(err))
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seed, err = p.GetByHash(seeds[3].ValidatorsHash())
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require.NotNil(err)
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assert.True(lightErr.IsCommitNotFoundErr(err))
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// now add them all to the provider
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for _, s := range seeds {
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err = p.StoreCommit(s)
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require.Nil(err)
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// and make sure we can get it back
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s2, err := p.GetByHash(s.ValidatorsHash())
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assert.Nil(err)
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err = checkEqual(s, s2, chainID)
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assert.Nil(err)
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// by height as well
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s2, err = p.GetByHeight(s.Height())
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err = checkEqual(s, s2, chainID)
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assert.Nil(err)
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}
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// make sure we get the last hash if we overstep
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seed, err = p.GetByHeight(5000)
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if assert.Nil(err, "%+v", err) {
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assert.Equal(seeds[count-1].Height(), seed.Height())
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err = checkEqual(seeds[count-1], seed, chainID)
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assert.Nil(err)
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}
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// and middle ones as well
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seed, err = p.GetByHeight(47)
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if assert.Nil(err, "%+v", err) {
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// we only step by 10, so 40 must be the one below this
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assert.Equal(40, seed.Height())
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}
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// and proper error for too low
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_, err = p.GetByHeight(5)
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assert.NotNil(err)
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assert.True(lightErr.IsCommitNotFoundErr(err))
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}
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