Add pytest configuration and initial test cases for EIP-7702 transactions

.github/workflows/pytest.yml

@@ -0,0 +1,47 @@
+name: pytest
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: pytest-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13.11"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b # v7.2.0
+        with:
+          enable-cache: true
+
+      - name: Install dependencies
+        run: make install
+
+      - name: Start Hardhat node
+        run: |
+          nohup npx hardhat --config ./hardhat.config.js node &
+
+      - name: Run tests
+        run: make test

Makefile

@@ -25,3 +25,6 @@ run-one: deploy
 
 run-separate: deploy
 	uv run python example/eip7702_separate_tx.py $(ARGS)
+
+test: deploy
+	uv run pytest -v tests/ $(ARGS)

example/RESULTS.md

@@ -29,7 +29,7 @@ uv run python example/eip7702_one_tx.py
 19:07:00 | INFO | [S3] Balances → Payer=1 ETH, Executor=0 ETH
 19:07:00 | INFO | [S4] Reading Counter state: 0xf1e09bf3E9024a5D10007F77c7d96C681b926494
 19:07:00 | INFO | [S4] Counter start: locked=False number=0
-19:07:00 | INFO | [S4] Executor pre:  code_len=0 nonce=0
+19:07:00 | INFO | [S4] Executor pre:  bytecode_len=0 (eth_getCode result) nonce=0
 19:07:00 | INFO | [S4] Payer    pre: nonce=0
 19:07:00 | INFO | [S4] Payer balance pre: 1 ETH
 19:07:00 | INFO | [S5] Authorization (by Executor) → target=0xa6a5F456046209D4e3291Eb1a0C175344612674C nonce=0
@@ -42,12 +42,12 @@ uv run python example/eip7702_one_tx.py
 19:07:00 | INFO | [S8] Estimated gas paid: 0.000104429291670197 ETH (effectiveGasPrice * gasUsed)
 19:07:00 | INFO | [S9] Verifying results
 19:07:00 | INFO | [S9] Counter end: locked=True number=6
-19:07:00 | INFO | [S9] Executor post: code_len=23 nonce=1
+19:07:00 | INFO | [S9] Executor post: bytecode_len=23 (eth_getCode may reflect delegation) nonce=1
 19:07:00 | INFO | [S9] Payer    post: nonce=1
 19:07:00 | INFO | [S9] Payer post balance: 0.999895570708329803 ETH
 19:07:00 | INFO | ──────────────── Summary ────────────────
 19:07:00 | INFO | Tx: 5a0984613819973623880bd600794f800c23c39ba47ed207b10e5e6495525773 | Block: 98 | GasUsed: 104429
-19:07:00 | INFO | Executor: 0xA73997395c4a08AFAeCaF9A183b7348C34ECCB9a | code_len=0 → 23 | nonce=0 → 1
+19:07:00 | INFO | Executor: 0xA73997395c4a08AFAeCaF9A183b7348C34ECCB9a | bytecode_len=0 → 23 | nonce=0 → 1
 19:07:00 | INFO | Payer   : 0xa4Fd1749027e905Be0E1C3971AAaD3f5B4b26A4c | nonce=0 → 1 | paid gas | balance: 1 → 0.999895570708329803 (Δ -0.000104429291670197 ETH)
 19:07:00 | INFO | Counter: address=0xf1e09bf3E9024a5D10007F77c7d96C681b926494 | locked=True | number=6
 19:07:00 | INFO | ─────────────────────────────────────────
@@ -82,16 +82,16 @@ uv run python example/eip7702_separate_tx.py
 19:08:36 | INFO | [S3] Payer   : 0x0A0652DBaE388376885E772D9307Ebb290001Dc5
 19:08:36 | INFO | [S3] Funding Payer 1.0 ETH from 0xeD6ef822d2cc46a8D7CfDb8A4b7BcF7E9B95F946 → 0x0A0652DBaE388376885E772D9307Ebb290001Dc5
 19:08:36 | INFO | [S4] Counter start: locked=False number=0
-19:08:36 | INFO | [S4] Executor code_len pre: 0
+19:08:36 | INFO | [S4] Executor bytecode_len pre (eth_getCode result): 0
 19:08:36 | INFO | [S5] Signed single authorization by Executor (nonce=0)
-19:08:36 | INFO | [S6] Running first transaction (delegate-only; install code via authorization)
+19:08:36 | INFO | [S6] Running first transaction (delegation-only; set delegation via authorization)
 19:08:36 | INFO | [TX1] Nonce → Payer=0 | Payer balance pre=1 ETH
-19:08:36 | INFO | [TX1] Sent (delegate-only): e9be3612f08bc8392e7133a18e9f4eb3fb85d2f0a6d965a2b6de11470e719c64
+19:08:36 | INFO | [TX1] Sent (delegation-only): e9be3612f08bc8392e7133a18e9f4eb3fb85d2f0a6d965a2b6de11470e719c64
 19:08:36 | INFO | [TX1] Mined: block=102 status=0 gasUsed=46046
 19:08:36 | INFO | [TX1] Payer balance: 1 → 0.99995395392356364 (Δ -0.00004604607643636 ETH)
 19:08:36 | INFO | [TX1] Estimated gas paid: 0.00004604607643636 ETH
-19:08:36 | INFO | [S6] Executor code_len post: 23
-19:08:36 | INFO | [S7] Running second transaction (set_number=7) by Payer (execute code)
+19:08:36 | INFO | [S6] Executor bytecode_len post (eth_getCode may reflect delegation): 23
+19:08:36 | INFO | [S7] Running second transaction (set_number=7) by Payer (execute via delegation)
 19:08:36 | INFO | [TX2] Nonce → Payer=1 | Payer balance pre=0.99995395392356364 ETH
 19:08:36 | INFO | [TX2] Sent: 38d74d7bce5383728965d869526f6f42105819c048d73c2d3fcccfd0e84eb6b3 (set_number=7)
 19:08:36 | INFO | [TX2] Mined: block=103 status=1 gasUsed=79465

example/eip7702_one_tx.py

@@ -158,7 +158,7 @@ def main():
         executor_nonce = w3.eth.get_transaction_count(executor_acct.address)
         payer_nonce = w3.eth.get_transaction_count(payer_acct.address)
         logger.info(
-            "[S4] Executor pre:  code_len=%d nonce=%d",
+            "[S4] Executor pre:  bytecode_len=%d (eth_getCode result) nonce=%d",
             len(executor_code),
             executor_nonce,
         )
@@ -191,7 +191,9 @@ def main():
             logger,
         )
 
-        logger.info("[S7] Building type-4 transaction (Payer signs, Executor is 'to')")
+        logger.info(
+            "[S7] Building type-4 transaction (Payer signs, Executor is 'to'; sets delegation via authorizationList and executes calldata)"
+        )
         tx = {
             "chainId": chain_id,
             "type": 4,
@@ -241,7 +243,7 @@ def main():
         new_payer_nonce = w3.eth.get_transaction_count(payer_acct.address)
         logger.info("[S9] Counter end: locked=%s number=%s", is_locked, current_number)
         logger.info(
-            "[S9] Executor post: code_len=%d nonce=%d",
+            "[S9] Executor post: bytecode_len=%d (eth_getCode may reflect delegation) nonce=%d",
             len(new_executor_code),
             new_executor_nonce,
         )
@@ -258,7 +260,7 @@ def main():
             receipt.get("gasUsed"),
         )
         logger.info(
-            "Executor: %s | code_len=%d → %d | nonce=%d → %d",
+            "Executor: %s | bytecode_len=%d → %d | nonce=%d → %d",
             executor_acct.address,
             len(executor_code),
             len(new_executor_code),

example/eip7702_separate_tx.py

@@ -82,7 +82,7 @@ def install_code_with_authorization(
         w3.from_wei(payer_balance_pre, "ether"),
     )
 
-    # delegate-only: send no calldata to just install code via authorization
+    # delegation-only: send no calldata (only applies delegation via authorization)
     tx = {
         "chainId": chain_id,
         "type": 4,
@@ -92,11 +92,11 @@ def install_code_with_authorization(
         "maxPriorityFeePerGas": 10**9,
         "to": executor_acct.address,
         "authorizationList": [signed_auth],
-        "data": b"",  # no call, just install code
+        "data": b"",  # no call, only applies delegation
     }
     signed_tx = payer_acct.sign_transaction(tx)
     tx_hash = w3.eth.send_raw_transaction(signed_tx.raw_transaction)
-    logger.info("[TX1] Sent (delegate-only): %s", tx_hash.hex())
+    logger.info("[TX1] Sent (delegation-only): %s", tx_hash.hex())
 
     receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
     payer_balance_post = w3.eth.get_balance(payer_acct.address)
@@ -145,12 +145,12 @@ def execute_multicall_as_payer(
         w3.from_wei(payer_balance_pre, "ether"),
     )
 
-    # build calldata same as before (execute on executor's code)
+    # build calldata (this will be executed via executor's delegation)
     data = build_multicall_payload(
         w3, counter_addr, counter_abi, multicall_addr, multicall_abi, new_value, logger
     )
 
-    # normal EIP-1559 tx signed by Payer to Executor (Executor code already set by TX1)
+    # normal EIP-1559 tx signed by Payer to Executor (delegation is set by TX1)
     tx = {
         "chainId": chain_id,
         "nonce": payer_nonce,
@@ -281,7 +281,9 @@ def main():
             "[S4] Counter start: locked=%s number=%s", start_locked, start_number
         )
         exec_code_pre = w3.eth.get_code(executor.address)
-        logger.info("[S4] Executor code_len pre: %d", len(exec_code_pre))
+        logger.info(
+            "[S4] Executor bytecode_len pre (eth_getCode result): %d", len(exec_code_pre)
+        )
 
         # 5. sign single authorization by Executor (nonce = current)
         executor_nonce = w3.eth.get_transaction_count(executor.address)
@@ -293,7 +295,7 @@ def main():
 
         # 6. run first tx with payer using the single authorization
         logger.info(
-            "[S6] Running first transaction (delegate-only; install code via authorization)"
+            "[S6] Running first transaction (delegation-only; set delegation via authorization)"
         )
         txh1, r1, v1 = install_code_with_authorization(
             w3,
@@ -305,11 +307,14 @@ def main():
             logger,
         )
         exec_code_post = w3.eth.get_code(executor.address)
-        logger.info("[S6] Executor code_len post: %d", len(exec_code_post))
+        logger.info(
+            "[S6] Executor bytecode_len post (eth_getCode may reflect delegation): %d",
+            len(exec_code_post),
+        )
 
         # 7. run second tx also by Payer (no authorization)
         logger.info(
-            "[S7] Running second transaction (set_number=%d) by Payer (execute code)",
+            "[S7] Running second transaction (set_number=%d) by Payer (execute via delegation)",
             args.value2,
         )
         txh2, r2, v2 = execute_multicall_as_payer(