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* fix: fix bug in evm-indexer * fix: change documentation link * docs: improve names for tests * chore: update cenkalti/backoff library * refactor: use exponential-back-off instead of constant-back-off * refactor: use constants for back-off configuration * fix: linter * chore: increase status client timeout
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package server | ||
|
|
||
| import ( | ||
| "context" | ||
| "math" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/cenkalti/backoff/v4" | ||
| "github.com/stretchr/testify/require" | ||
|
|
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| coretypes "github.com/cometbft/cometbft/rpc/core/types" | ||
| ) | ||
|
|
||
| var ( | ||
| failedResponse = &coretypes.ResultStatus{ | ||
| SyncInfo: coretypes.SyncInfo{ | ||
| LatestBlockHeight: 0, | ||
| }, | ||
| } | ||
|
|
||
| successfulResponse = &coretypes.ResultStatus{ | ||
| SyncInfo: coretypes.SyncInfo{ | ||
| LatestBlockHeight: 1, | ||
| }, | ||
| } | ||
| ) | ||
|
|
||
| type statusClientMock struct { | ||
| // retries left before success response | ||
| retriesLeft uint | ||
| } | ||
|
|
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| func newStatusClientMock(retriesLeft uint) *statusClientMock { | ||
| return &statusClientMock{ | ||
| retriesLeft: retriesLeft, | ||
| } | ||
| } | ||
|
|
||
| func (m *statusClientMock) Status(context.Context) (*coretypes.ResultStatus, error) { | ||
| if m.retriesLeft == 0 { | ||
| return successfulResponse, nil | ||
| } | ||
|
|
||
| m.retriesLeft-- | ||
| return failedResponse, nil | ||
| } | ||
|
|
||
| func TestWaitUntilClientReady(t *testing.T) { | ||
| for _, tc := range []struct { | ||
| desc string | ||
| retriesLeft uint | ||
| }{ | ||
| { | ||
| desc: "return successful response right away", | ||
| retriesLeft: 0, | ||
| }, | ||
| { | ||
| desc: "return successful response after one retry", | ||
| retriesLeft: 1, | ||
| }, | ||
| { | ||
| desc: "return successful response after 10 retries", | ||
| retriesLeft: 10, | ||
| }, | ||
| } { | ||
| t.Run(tc.desc, func(t *testing.T) { | ||
| ctxb := context.Background() | ||
| mock := newStatusClientMock(tc.retriesLeft) | ||
|
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| err := waitUntilClientReady(ctxb, mock, backoff.NewConstantBackOff(time.Nanosecond)) | ||
| require.NoError(t, err) | ||
| require.Equal(t, uint(0), mock.retriesLeft) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestWaitUntilClientReadyTimeout(t *testing.T) { | ||
| ctxb := context.Background() | ||
| // create a mock client which always returns an error | ||
| mock := newStatusClientMock(math.MaxUint) | ||
|
|
||
| exponentialBackOff := backoff.NewExponentialBackOff( | ||
| backoff.WithInitialInterval(time.Millisecond), | ||
| backoff.WithMaxInterval(time.Millisecond*10), | ||
| backoff.WithMaxElapsedTime(time.Millisecond*100), | ||
| ) | ||
|
|
||
| err := waitUntilClientReady(ctxb, mock, exponentialBackOff) | ||
| // make sure error is propagated in case of timeout | ||
| require.Error(t, err) | ||
| require.Contains(t, err.Error(), "node isn't ready, possibly in state sync process") | ||
| } |
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