forked from cerc-io/plugeth
eth/filters: fix TestPendingLogsSubscription (#23619)
The test did not synchronize with per-case goroutines, and thus didn't notice that some tests were just hanging. This change adds missing synchronization and fixes the broken tests.
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Miro
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@ -506,58 +506,80 @@ func TestPendingLogsSubscription(t *testing.T) {
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},
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}
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pendingBlockNumber = big.NewInt(rpc.PendingBlockNumber.Int64())
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testCases = []struct {
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crit ethereum.FilterQuery
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expected []*types.Log
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c chan []*types.Log
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sub *Subscription
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err chan error
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}{
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// match all
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{
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ethereum.FilterQuery{}, flattenLogs(allLogs),
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nil, nil,
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ethereum.FilterQuery{FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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flattenLogs(allLogs),
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nil, nil, nil,
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},
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// match none due to no matching addresses
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{
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ethereum.FilterQuery{Addresses: []common.Address{{}, notUsedAddress}, Topics: [][]common.Hash{nil}},
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ethereum.FilterQuery{Addresses: []common.Address{{}, notUsedAddress}, Topics: [][]common.Hash{nil}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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nil,
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nil, nil,
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nil, nil, nil,
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},
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// match logs based on addresses, ignore topics
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{
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ethereum.FilterQuery{Addresses: []common.Address{firstAddr}},
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ethereum.FilterQuery{Addresses: []common.Address{firstAddr}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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append(flattenLogs(allLogs[:2]), allLogs[5][3]),
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nil, nil,
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nil, nil, nil,
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},
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// match none due to no matching topics (match with address)
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{
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ethereum.FilterQuery{Addresses: []common.Address{secondAddr}, Topics: [][]common.Hash{{notUsedTopic}}},
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ethereum.FilterQuery{Addresses: []common.Address{secondAddr}, Topics: [][]common.Hash{{notUsedTopic}}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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nil,
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nil, nil, nil,
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},
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// match logs based on addresses and topics
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{
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ethereum.FilterQuery{Addresses: []common.Address{thirdAddress}, Topics: [][]common.Hash{{firstTopic, secondTopic}}},
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ethereum.FilterQuery{Addresses: []common.Address{thirdAddress}, Topics: [][]common.Hash{{firstTopic, secondTopic}}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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append(flattenLogs(allLogs[3:5]), allLogs[5][0]),
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nil, nil,
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nil, nil, nil,
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},
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// match logs based on multiple addresses and "or" topics
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{
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ethereum.FilterQuery{Addresses: []common.Address{secondAddr, thirdAddress}, Topics: [][]common.Hash{{firstTopic, secondTopic}}},
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ethereum.FilterQuery{Addresses: []common.Address{secondAddr, thirdAddress}, Topics: [][]common.Hash{{firstTopic, secondTopic}}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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append(flattenLogs(allLogs[2:5]), allLogs[5][0]),
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nil,
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nil,
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},
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// block numbers are ignored for filters created with New***Filter, these return all logs that match the given criteria when the state changes
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{
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ethereum.FilterQuery{Addresses: []common.Address{firstAddr}, FromBlock: big.NewInt(2), ToBlock: big.NewInt(3)},
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append(flattenLogs(allLogs[:2]), allLogs[5][3]),
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nil, nil,
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nil, nil, nil,
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},
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// multiple pending logs, should match only 2 topics from the logs in block 5
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{
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ethereum.FilterQuery{Addresses: []common.Address{thirdAddress}, Topics: [][]common.Hash{{firstTopic, fourthTopic}}},
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ethereum.FilterQuery{Addresses: []common.Address{thirdAddress}, Topics: [][]common.Hash{{firstTopic, fourthTopic}}, FromBlock: pendingBlockNumber, ToBlock: pendingBlockNumber},
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[]*types.Log{allLogs[5][0], allLogs[5][2]},
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nil, nil,
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nil, nil, nil,
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},
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// match none due to only matching new mined logs
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{
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ethereum.FilterQuery{},
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nil,
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nil, nil, nil,
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},
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// match none due to only matching mined logs within a specific block range
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{
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ethereum.FilterQuery{FromBlock: big.NewInt(1), ToBlock: big.NewInt(2)},
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nil,
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nil, nil, nil,
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},
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// match all due to matching mined and pending logs
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{
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ethereum.FilterQuery{FromBlock: big.NewInt(rpc.LatestBlockNumber.Int64()), ToBlock: big.NewInt(rpc.PendingBlockNumber.Int64())},
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flattenLogs(allLogs),
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nil, nil, nil,
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},
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// match none due to matching logs from a specific block number to new mined blocks
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{
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ethereum.FilterQuery{FromBlock: big.NewInt(1), ToBlock: big.NewInt(rpc.LatestBlockNumber.Int64())},
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nil,
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nil, nil, nil,
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},
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}
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)
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@ -567,43 +589,69 @@ func TestPendingLogsSubscription(t *testing.T) {
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// (some) events are posted.
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for i := range testCases {
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testCases[i].c = make(chan []*types.Log)
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testCases[i].sub, _ = api.events.SubscribeLogs(testCases[i].crit, testCases[i].c)
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testCases[i].err = make(chan error)
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var err error
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testCases[i].sub, err = api.events.SubscribeLogs(testCases[i].crit, testCases[i].c)
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if err != nil {
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t.Fatalf("SubscribeLogs %d failed: %v\n", i, err)
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}
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}
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for n, test := range testCases {
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i := n
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tt := test
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go func() {
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defer tt.sub.Unsubscribe()
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var fetched []*types.Log
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timeout := time.After(1 * time.Second)
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fetchLoop:
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for {
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logs := <-tt.c
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select {
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case logs := <-tt.c:
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// Do not break early if we've fetched greater, or equal,
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// to the number of logs expected. This ensures we do not
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// deadlock the filter system because it will do a blocking
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// send on this channel if another log arrives.
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fetched = append(fetched, logs...)
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if len(fetched) >= len(tt.expected) {
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case <-timeout:
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break fetchLoop
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}
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}
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if len(fetched) != len(tt.expected) {
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panic(fmt.Sprintf("invalid number of logs for case %d, want %d log(s), got %d", i, len(tt.expected), len(fetched)))
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tt.err <- fmt.Errorf("invalid number of logs for case %d, want %d log(s), got %d", i, len(tt.expected), len(fetched))
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return
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}
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for l := range fetched {
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if fetched[l].Removed {
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panic(fmt.Sprintf("expected log not to be removed for log %d in case %d", l, i))
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tt.err <- fmt.Errorf("expected log not to be removed for log %d in case %d", l, i)
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return
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}
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if !reflect.DeepEqual(fetched[l], tt.expected[l]) {
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panic(fmt.Sprintf("invalid log on index %d for case %d", l, i))
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tt.err <- fmt.Errorf("invalid log on index %d for case %d\n", l, i)
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return
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}
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}
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tt.err <- nil
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}()
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}
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// raise events
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time.Sleep(1 * time.Second)
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for _, ev := range allLogs {
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backend.pendingLogsFeed.Send(ev)
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}
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for i := range testCases {
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err := <-testCases[i].err
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if err != nil {
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t.Fatalf("test %d failed: %v", i, err)
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}
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<-testCases[i].sub.Err()
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}
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}
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// TestPendingTxFilterDeadlock tests if the event loop hangs when pending
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