tests: add gas consumption test

tests/integration_tests/test_gas.py

@@ -0,0 +1,37 @@
+from .utils import (
+    ADDRS,
+    CONTRACTS,
+    KEYS,
+    deploy_contract,
+    send_transaction,
+    w3_wait_for_new_blocks,
+)
+
+
+def test_equivalent_gas_consumption(geth, ethermint):
+    tx_value = 10
+
+    # send a transaction with geth
+    geth_gas_price = geth.w3.eth.gas_price
+    tx = {"to": ADDRS["community"], "value": tx_value, "gasPrice": geth_gas_price}
+    geth_reciept = send_transaction(geth.w3, tx, KEYS["validator"])
+
+    # send an equivalent transaction with ethermint
+    ethermint_gas_price = ethermint.w3.eth.gas_price
+    tx = {"to": ADDRS["community"], "value": tx_value, "gasPrice": ethermint_gas_price}
+    ethermint_reciept = send_transaction(ethermint.w3, tx, KEYS["validator"])
+
+    # ensure that the gasUsed is equivalent
+    assert geth_reciept.gasUsed == ethermint_reciept.gasUsed
+
+    w3_wait_for_new_blocks(geth.w3, 5)
+    w3_wait_for_new_blocks(ethermint.w3, 5)
+
+    # repeat the above process with contract deployment
+    _, geth_contract_reciept = deploy_contract(
+        geth.w3,
+        CONTRACTS["TestERC20A"])
+    _, ethermint_contract_reciept = deploy_contract(
+        ethermint.w3,
+        CONTRACTS["TestERC20A"])
+    assert geth_contract_reciept.gasUsed == ethermint_contract_reciept.gasUsed