Problem: multi ibc transfer is not tested

integration_tests/configs/ibc.jsonnet

@@ -7,7 +7,13 @@ config {
     key_name: 'signer1',
     accounts: super.accounts[:std.length(super.accounts) - 1] + [super.accounts[std.length(super.accounts) - 1] {
       coins: super.coins + ',100000000000ibcfee',
-    }],
+    }] + [
+      {
+        name: 'user' + i,
+        coins: '30000000000000000000000basetcro',
+      }
+      for i in std.range(1, 20)
+    ],
     'app-config'+: {
       'index-events': super['index-events'] + ['message.action'],
     },
@@ -76,6 +82,12 @@ config {
         coins: '10000000000000cro',
         mnemonic: '${SIGNER2_MNEMONIC}',
       },
+    ] + [
+      {
+        name: 'user' + i,
+        coins: '10000000000000cro',
+      }
+      for i in std.range(1, 20)
     ],
     genesis: {
       app_state: {

integration_tests/cosmoscli.py

@@ -838,12 +838,14 @@ def ibc_transfer(
         amount,
         channel,  # src channel
         target_version,  # chain version number of target chain
+        event_query_tx_for=False,
         **kwargs,
     ):
         default_kwargs = {
             "home": self.data_dir,
+            "broadcast_mode": "sync",
         }
-        return json.loads(
+        rsp = json.loads(
             self.raw(
                 "tx",
                 "ibc-transfer",
@@ -864,6 +866,9 @@ def ibc_transfer(
                 **(default_kwargs | kwargs),
             )
         )
+        if rsp["code"] == 0 and event_query_tx_for:
+            rsp = self.event_query_tx_for(rsp["txhash"])
+        return rsp
 
     def ibc_escrow_address(self, port, channel):
         res = self.raw(
@@ -877,6 +882,19 @@ def ibc_escrow_address(self, port, channel):
         ).decode("utf-8")
         return re.sub(r"\n", "", res)
 
+    def ibc_denom_trace(self, path, node):
+        denom_hash = hashlib.sha256(path.encode()).hexdigest().upper()
+        return json.loads(
+            self.raw(
+                "query",
+                "ibc-transfer",
+                "denom-trace",
+                denom_hash,
+                node=node,
+                output="json",
+            )
+        )["denom_trace"]
+
     def export(self):
         return self.raw("export", home=self.data_dir)
 

integration_tests/ibc_utils.py

@@ -331,6 +331,83 @@ def get_balances(chain, addr):
     return chain.cosmos_cli().balances(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)]
+    addrs0 = [chains[0].address(user) for user in users]
+    addrs1 = [chains[1].address(user) for user in users]
+    denom0 = "basetcro"
+    denom1 = "basecro"
+    channel0 = "channel-0"
+    channel1 = "channel-0"
+    old_balance0 = 30000000000000000000000
+    old_balance1 = 1000000000000000000000
+    path = f"transfer/{channel1}/{denom0}"
+    denom_hash = hashlib.sha256(path.encode()).hexdigest().upper()
+    amount = 1000
+    expected = [
+        {"denom": denom1, "amount": f"{old_balance1}"},
+        {"denom": f"ibc/{denom_hash}", "amount": f"{amount}"},
+    ]
+
+    for i, _ in enumerate(users):
+        rsp = chains[0].ibc_transfer(
+            addrs0[i],
+            addrs1[i],
+            f"{amount}{denom0}",
+            channel0,
+            1,
+            fees=f"1000{denom1}",
+            event_query_tx_for=True,
+        )
+        assert rsp["code"] == 0, rsp["raw_log"]
+        balance = chains[1].balance(addrs1[i], denom1)
+        assert balance == old_balance1, balance
+        balance = chains[0].balance(addrs0[i], denom0)
+        assert balance == old_balance0 - amount, balance
+
+    def assert_trace_balance(addr):
+        balance = chains[1].balances(addr)
+        if len(balance) > 1:
+            assert balance == expected, balance
+            return True
+        else:
+            return False
+
+    denom_trace = chains[0].ibc_denom_trace(path, ibc.chainmain.node_rpc(0))
+    assert denom_trace == {"path": f"transfer/{channel1}", "base_denom": denom0}
+    for i, _ in enumerate(users):
+        wait_for_fn("assert balance", lambda: assert_trace_balance(addrs1[i]))
+
+    # chainmain-1 -> cronos_777-1
+    amt = amount // 2
+
+    def assert_balance(addr):
+        balance = chains[0].balance(addr, denom0)
+        if balance > old_balance0 - amount:
+            assert balance == old_balance0 - amt, balance
+            return True
+        else:
+            return False
+
+    for _ in range(0, 2):
+        for i, _ in enumerate(users):
+            rsp = chains[1].ibc_transfer(
+                addrs1[i],
+                addrs0[i],
+                f"{amt}ibc/{denom_hash}",
+                channel1,
+                1,
+                fees=f"100000000{denom1}",
+            )
+            assert rsp["code"] == 0, rsp["raw_log"]
+
+        for i, _ in enumerate(users):
+            wait_for_fn("assert balance", lambda: assert_balance(addrs0[i]))
+
+        old_balance0 += amt
+
+
 def ibc_incentivized_transfer(ibc):
     chains = [ibc.cronos.cosmos_cli(), ibc.chainmain.cosmos_cli()]
     receiver = chains[1].address("signer2")

integration_tests/test_ibc_rly.py

@@ -14,6 +14,7 @@
     hermes_transfer,
     ibc_denom,
     ibc_incentivized_transfer,
+    ibc_multi_transfer,
     prepare_network,
 )
 from .utils import (
@@ -368,3 +369,7 @@ def test_cronos_transfer_source_tokens(ibc):
 
 def test_cronos_transfer_source_tokens_with_proxy(ibc):
     assert_transfer_source_tokens_topics(ibc, cronos_transfer_source_tokens_with_proxy)
+
+
+def test_ibc_multi(ibc):
+    ibc_multi_transfer(ibc)

scripts/.env

@@ -6,4 +6,4 @@ export SIGNER1_MNEMONIC="shed crumble dismiss loyal latin million oblige gesture
 export SIGNER2_MNEMONIC="night renew tonight dinner shaft scheme domain oppose echo summer broccoli agent face guitar surface belt veteran siren poem alcohol menu custom crunch index"
 export SIGNER3_MNEMONIC="step endless survey brand topic warrior merry boat metal throw tag recycle pitch animal drill jar hero library arm swift kitten proof acoustic chef"
 export CRONOS_ADMIN="crc12luku6uxehhak02py4rcz65zu0swh7wjsrw0pp"
-export IBC_CRO_DENOM="ibc/6411AE2ADA1E73DB59DB151A8988F9B7D5E7E233D8414DB6817F8F1A01611F86"
+export IBC_CRO_DENOM="ibc/6411AE2ADA1E73DB59DB151A8988F9B7D5E7E233D8414DB6817F8F1A01611F86"