fix(rpc): align fee history

CHANGELOG.md

@@ -39,6 +39,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ## Unreleased
 
 ### Bug Fixes
+* (rpc) [#1613](https://github.com/evmos/ethermint/pull/1613) Change the default json-rpc listen address to localhost.
 * (rpc) [#1611](https://github.com/evmos/ethermint/pull/1611) Add missing next fee in fee history as ethereum.
 
 ## [v0.21.0-rc1] - 2022-1-13

rpc/backend/utils.go

@@ -134,7 +134,7 @@ func (b *Backend) processBlock(
 	// set basefee
 	targetOneFeeHistory.BaseFee = blockBaseFee
 	cfg := b.ChainConfig()
-	if cfg.IsLondon(big.NewInt(blockHeight)) {
+	if cfg.IsLondon(big.NewInt(blockHeight + 1)) {
 		targetOneFeeHistory.NextBaseFee = misc.CalcBaseFee(cfg, b.CurrentHeader())
 	} else {
 		targetOneFeeHistory.NextBaseFee = new(big.Int)

tests/integration_tests/test_fee_history.py

@@ -0,0 +1,46 @@
+import pytest
+from web3 import Web3
+
+from .network import setup_ethermint
+from .utils import (
+    ADDRS,
+    send_transaction,
+)
+
+
+@pytest.fixture(scope="module")
+def custom_ethermint(tmp_path_factory):
+    path = tmp_path_factory.mktemp("fee-history")
+    yield from setup_ethermint(path, 26500, long_timeout_commit=True)
+
+
+@pytest.fixture(
+    scope="module", params=["ethermint", "geth", "ethermint-ws"]
+)
+def cluster(request, custom_ethermint, geth):
+    """
+    run on both ethermint and geth
+    """
+    provider = request.param
+    if provider == "ethermint":
+        yield custom_ethermint
+    elif provider == "geth":
+        yield geth
+    elif provider == "ethermint-ws":
+        ethermint_ws = custom_ethermint.copy()
+        ethermint_ws.use_websocket()
+        yield ethermint_ws
+    else:
+        raise NotImplementedError
+
+
+def test_basic(cluster):
+    w3: Web3 = cluster.w3
+    eth_rpc = w3.provider
+    tx_value = 10
+    gas_price = w3.eth.gas_price
+    tx = {"to": ADDRS["community"], "value": tx_value, "gasPrice": gas_price}
+    send_transaction(w3, tx)
+    for provider in [eth_rpc]:
+        fee_history = provider.make_request("eth_feeHistory", [4, "latest", [100]])
+        assert len(fee_history["result"]["baseFeePerGas"]) == 5