Problem: batch call precompile is not tested

integration_tests/configs/ibc.jsonnet

@@ -12,7 +12,7 @@ config {
         name: 'user' + i,
         coins: '30000000000000000000000basetcro',
       }
-      for i in std.range(1, 20)
+      for i in std.range(1, 2)
     ],
     'app-config'+: {
       'index-events': super['index-events'] + ['message.action'],
@@ -87,7 +87,7 @@ config {
         name: 'user' + i,
         coins: '10000000000000cro',
       }
-      for i in std.range(1, 20)
+      for i in std.range(1, 2)
     ],
     genesis: {
       app_state: {

integration_tests/configs/ibc_rly_evm.jsonnet

@@ -3,7 +3,7 @@ local ibc = import 'ibc_rly.jsonnet';
 ibc {
   relayer+: {
     chains: [super.chains[0] {
-      precompiled_contract_address: '0x0000000000000000000000000000000000000065',
+      precompiled_contract_address: '0x6F1805D56bF05b7be10857F376A5b1c160C8f72C',
       json_rpc_address: 'http://127.0.0.1:26701',
     }] + super.chains[1:],
   },

integration_tests/contracts/contracts/TestRelayer.sol

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.4;
+
+contract TestRelayer {
+    address constant relayer = 0x0000000000000000000000000000000000000065;
+
+    function batchCall(bytes[] memory payloads) public {
+        for (uint256 i = 0; i < payloads.length; i++) {
+            (bool success,) = relayer.call(payloads[i]);
+            require(success);
+        }
+    }
+}

integration_tests/ibc_utils.py

@@ -14,6 +14,7 @@
     ADDRS,
     CONTRACTS,
     deploy_contract,
+    derive_new_account,
     eth_to_bech32,
     parse_events,
     parse_events_rpc,
@@ -180,6 +181,17 @@ def prepare_network(
                 version,
             )
         else:
+            w3 = cronos.w3
+            acc = derive_new_account(2)
+            sender = acc.address
+            # fund new sender to deploy contract with same address
+            if w3.eth.get_balance(sender, "latest") == 0:
+                fund = 3000000000000000000
+                tx = {"to": sender, "value": fund, "gasPrice": w3.eth.gas_price}
+                send_transaction(w3, tx)
+                assert w3.eth.get_balance(sender, "latest") == fund
+            caller = deploy_contract(w3, CONTRACTS["TestRelayer"], key=acc.key).address
+            assert caller == "0x6F1805D56bF05b7be10857F376A5b1c160C8f72C", caller
             call_rly_cmd(path, connection_only, version)
 
         if incentivized:
@@ -333,7 +345,7 @@ def get_balances(chain, addr):
 
 def ibc_multi_transfer(ibc):
     chains = [ibc.cronos.cosmos_cli(), ibc.chainmain.cosmos_cli()]
-    users = [f"user{i}" for i in range(1, 21)]
+    users = [f"user{i}" for i in range(1, 3)]
     addrs0 = [chains[0].address(user) for user in users]
     addrs1 = [chains[1].address(user) for user in users]
     denom0 = "basetcro"
@@ -456,7 +468,7 @@ def ibc_incentivized_transfer(ibc):
     def check_fee():
         amount = chains[0].balance(relayer, fee_denom)
         if amount > old_amt_fee:
-            assert amount == old_amt_fee + 20
+            assert amount == old_amt_fee + 20, amount
             return True
         else:
             return False

integration_tests/test_ibc_rly.py

@@ -11,11 +11,11 @@
     cronos_transfer_source_tokens,
     cronos_transfer_source_tokens_with_proxy,
     get_balance,
-    hermes_transfer,
     ibc_denom,
     ibc_incentivized_transfer,
     ibc_multi_transfer,
     prepare_network,
+    rly_transfer,
 )
 from .utils import (
     ADDRS,
@@ -54,7 +54,7 @@ def ibc(request, tmp_path_factory):
     yield from prepare_network(
         path,
         name,
-        relayer=cluster.Relayer.HERMES.value,
+        relayer=cluster.Relayer.RLY.value,
     )
 
 
@@ -230,7 +230,7 @@ def test_ibc(ibc):
     w3 = ibc.cronos.w3
     wait_for_new_blocks(ibc.cronos.cosmos_cli(), 1)
     start = w3.eth.get_block_number()
-    hermes_transfer(ibc)
+    rly_transfer(ibc)
     denom = ibc_denom(channel, src_denom)
     dst_addr = eth_to_bech32(cronos_signer2)
     old_dst_balance = get_balance(ibc.cronos, dst_addr, dst_denom)

integration_tests/utils.py

@@ -59,6 +59,7 @@
     "CosmosERC20": "CosmosToken.sol",
     "TestBank": "TestBank.sol",
     "TestICA": "TestICA.sol",
+    "TestRelayer": "TestRelayer.sol",
 }
 
 
@@ -397,6 +398,13 @@ def cronos_address_from_mnemonics(mnemonics, prefix=CRONOS_ADDRESS_PREFIX):
     return eth_to_bech32(acct.address, prefix)
 
 
+def derive_new_account(n=1):
+    # derive a new address
+    account_path = f"m/44'/60'/0'/0/{n}"
+    mnemonic = os.getenv("COMMUNITY_MNEMONIC")
+    return Account.from_mnemonic(mnemonic, account_path=account_path)
+
+
 def send_to_cosmos(gravity_contract, token_contract, w3, recipient, amount, key=None):
     """
     do approve and sendToCronos on ethereum side