Problem: tx inclusion logic when block gas limit exceeded is not test…

…ed (#380)

Closes: #379
Solution:
- add integration test to test tx inclusion logic when block gas limit exceeded.

integration_tests/test_basic.py

@@ -598,3 +598,39 @@ def test_contract(cronos):
     # call contract
     greeter_call_result = contract.caller.greet()
     assert "world" == greeter_call_result
+
+
+def test_tx_inclusion(cronos):
+    """
+    - send multiple heavy transactions at the same time.
+    - check they are included in consecutively blocks without failure.
+    """
+    w3 = cronos.w3
+    # bigger than block_gas_limit/2, so at most one tx in a block
+    tx_gas_limit = 80000000
+    amount = 1000
+    # use different sender accounts to be able be send concurrently
+    signed_txs = []
+    for account in ["validator", "community", "signer1", "signer2"]:
+        signed_txs.append(
+            sign_transaction(
+                w3,
+                {
+                    "to": ADDRS["validator"],
+                    "value": amount,
+                    "gas": tx_gas_limit,
+                },
+                KEYS[account],
+            )
+        )
+
+    for signed in signed_txs:
+        w3.eth.send_raw_transaction(signed.rawTransaction)
+
+    receipts = [
+        w3.eth.wait_for_transaction_receipt(signed.hash) for signed in signed_txs
+    ]
+
+    # the transactions should be included in differnt but consecutive blocks
+    for receipt, next_receipt in zip(receipts, receipts[1:]):
+        assert next_receipt.blockNumber == receipt.blockNumber + 1

integration_tests/test_upgrade.py

@@ -36,7 +36,7 @@ def post_init(path, base_port, config):
     ini_path = path / chain_id / SUPERVISOR_CONFIG_FILE
     ini = configparser.RawConfigParser()
     ini.read_file(ini_path.open())
-    reg = re.compile(fr"^program:{chain_id}-node(\d+)")
+    reg = re.compile(rf"^program:{chain_id}-node(\d+)")
     for section in ini.sections():
         m = reg.match(section)
         if m: