tests: add additional gas consumption tests

gomod2nix.toml

@@ -94,8 +94,8 @@ schema = 3
     version = "v1.0.4"
     hash = "sha256-JvcBXBdjdmnaW/nyf/tw/uaOAGn1b78yxrtl2/Rs3kA="
   [mod."github.com/cosmos/cosmos-proto"]
-    version = "v1.0.0-alpha7"
-    hash = "sha256-2wCH+toTF2A6MfFjOa13muEH5oBCcxAhZEqirNOrBA0="
+    version = "v1.0.0-alpha8"
+    hash = "sha256-iXzXoS5Kfh5DBy+PhdFWraDWXda/3M4j7j4VECjv4CA="
   [mod."github.com/cosmos/cosmos-sdk"]
     version = "v0.46.5-0.20221114064055-2114ec42dfa1"
     hash = "sha256-swqznmZfl2dlj/8ReJJs0zagFN2xpzF2ehsfVvPbohc="

tests/integration_tests/contracts/contracts/BurnGas.sol

@@ -0,0 +1,13 @@
+pragma solidity >0.5.0;
+
+contract BurnGas {
+    int[] expensive;
+
+    function burnGas(uint256 count) public {
+        for (uint i = 0; i < count; i++) {
+            unchecked {
+                expensive.push(10);
+            }
+        }
+    }
+}

tests/integration_tests/test_gas.py

@@ -1,14 +1,7 @@
-from .utils import (
-    ADDRS,
-    CONTRACTS,
-    KEYS,
-    deploy_contract,
-    send_transaction,
-    w3_wait_for_new_blocks,
-)
+from .utils import ADDRS, CONTRACTS, KEYS, deploy_contract, send_transaction
 
 
-def test_equivalent_gas_consumption(geth, ethermint):
+def test_gas_eth_tx(geth, ethermint):
     tx_value = 10
 
     # send a transaction with geth
@@ -24,14 +17,34 @@ def test_equivalent_gas_consumption(geth, ethermint):
     # 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
+def test_gas_deployment(geth, ethermint):
+    # deploy an identical contract on geth and ethermint
+    # ensure that the gasUsed is equivalent
     _, 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
+
+
+def test_gas_call(geth, ethermint):
+    function_input = 10
+
+    # deploy an identical contract on geth and ethermint
+    # ensure that the contract has a function which consumes non-trivial gas
+    geth_contract, _ = deploy_contract(
+        geth.w3,
+        CONTRACTS["BurnGas"])
+    ethermint_contract, _ = deploy_contract(
+        ethermint.w3,
+        CONTRACTS["BurnGas"])
+
+    # call the contract locally (eth_call) and compare gas estimates
+    geth_estimated_gas = (geth_contract.functions
+                          .burnGas(function_input).estimate_gas())
+    ethermint_estimated_gas = (ethermint_contract.functions
+                               .burnGas(function_input).estimate_gas())
+    assert geth_estimated_gas == ethermint_estimated_gas

tests/integration_tests/utils.py

@@ -27,6 +27,7 @@
 TEST_CONTRACTS = {
     "TestERC20A": "TestERC20A.sol",
     "Greeter": "Greeter.sol",
+    "BurnGas": "BurnGas.sol",
     "TestChainID": "ChainID.sol",
 }