ethclient: fix flaky test (#28864)

Fix flaky test due to incomplete transaction indexing

ethclient/ethclient.go

@@ -689,6 +689,8 @@ type rpcProgress struct {
 	HealedBytecodeBytes    hexutil.Uint64
 	HealingTrienodes       hexutil.Uint64
 	HealingBytecode        hexutil.Uint64
+	TxIndexFinishedBlocks  hexutil.Uint64
+	TxIndexRemainingBlocks hexutil.Uint64
 }
 
 func (p *rpcProgress) toSyncProgress() *ethereum.SyncProgress {
@@ -713,5 +715,7 @@ func (p *rpcProgress) toSyncProgress() *ethereum.SyncProgress {
 		HealedBytecodeBytes:    uint64(p.HealedBytecodeBytes),
 		HealingTrienodes:       uint64(p.HealingTrienodes),
 		HealingBytecode:        uint64(p.HealingBytecode),
+		TxIndexFinishedBlocks:  uint64(p.TxIndexFinishedBlocks),
+		TxIndexRemainingBlocks: uint64(p.TxIndexRemainingBlocks),
 	}
 }

ethclient/ethclient_test.go

@@ -231,6 +231,13 @@ func newTestBackend(t *testing.T) (*node.Node, []*types.Block) {
 	if _, err := ethservice.BlockChain().InsertChain(blocks[1:]); err != nil {
 		t.Fatalf("can't import test blocks: %v", err)
 	}
+	// Ensure the tx indexing is fully generated
+	for ; ; time.Sleep(time.Millisecond * 100) {
+		progress, err := ethservice.BlockChain().TxIndexProgress()
+		if err == nil && progress.Done() {
+			break
+		}
+	}
 	return n, blocks
 }