test(swap): enable Smart Transactions in swap and bridge E2E tests

[davibroc]

Summary

• Introduces tests/helpers/swap/smart-transactions-mocks.ts — a reusable helper that mocks the STX backend (/getFees, /submitTransactions, /batchStatus, /getTxStatus) and forwards signed transactions to Anvil so they get mined and receipts resolve correctly.
• Removes .withDisabledSmartTransactions() from all affected test fixtures so tests run with the same STX-enabled configuration as production.
• Applies the new helper to all swap/bridge regression and smoke specs: swap-action-regression, swap-token-chart, swap-token-rwa, swap-action-smoke, and bridge-action-smoke.

How Smart Transactions work in tests

When STX is enabled the swap publish hook intercepts the transaction before broadcast:

1. Calls POST /getFees → mock returns a static fee schedule so the controller can sign the tx locally.
2. Signs the tx locally and calls POST /submitTransactions → mock forwards all rawTxs to Anvil via eth_sendRawTransaction (sequentially, preserving nonce order for approval + swap batches), then returns a UUID.
3. Because mobileReturnTxHashAsap: true the hook resolves immediately with the locally-computed txHash — no polling needed.
4. TransactionController polls Anvil for eth_getTransactionReceipt using that hash → Anvil returns a valid receipt → tx is marked Confirmed.

Key fix: ERC-20 → ETH batch submissions

Previously the mock only forwarded rawTxs[0] (the approval tx) to Anvil. The swap tx (rawTxs[1]) was never mined, so TransactionController never found a receipt and the swap stayed Pending. The fix loops over all entries in rawTxs and forwards each one sequentially.

Modified scripts

• swap-action-regression — ETH→WETH and WETH→ETH swaps confirm end-to-end
• swap-token-chart — ETH→DAI swap from token chart confirms
• swap-token-rwa — USDC→GOOGLON swap (CowSwap intent flow)
• swap-action-smoke — ETH→USDC and USDC→ETH swaps confirm
• bridge-action-smoke — ETH (Mainnet)→ETH (Base) bridge confirms

🤖 Generated with Claude Code

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Note

Low Risk
Low risk since changes are isolated to E2E test harnesses/mocks; main risk is increased flakiness if STX mock assumptions (fee schema, proxy matching, Anvil forwarding) diverge from app behavior.

Overview
Swap/bridge E2E tests now run with Smart Transactions enabled by removing .withDisabledSmartTransactions() from affected fixtures.

Adds setupSmartTransactionsMocks to mock the STX backend (/getFees, /submitTransactions, /batchStatus, and a low-priority /getTxStatus fallback) and, crucially, forwards all submitted rawTxs sequentially to Anvil via eth_sendRawTransaction so batched approval+swap flows get mined and receipts resolve.

Updates swap and bridge regression/smoke specs to wrap existing testSpecificMock with the new STX mocks (and bumps timeouts where needed).

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[github-actions]

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[davibroc]

Addressed the cursor bot comment: the getTxStatus mock in setupSmartTransactionsMocks has been lowered to priority 1 (commit 8082888) so bridge-mocks.ts (priority 999) always takes precedence for bridge tests. Same-chain swap tests are unaffected since srcChainId == destChainId there.

[github-actions]

🔍 Smart E2E Test Selection

• Selected E2E tags: SmokeTrade, SmokeConfirmations
• Selected Performance tags: None (no tests recommended)
• Risk Level: medium
• AI Confidence: 95%

click to see 🤖 AI reasoning details

E2E Test Selection:
All 6 changed files are exclusively within the swap/bridge E2E test infrastructure. The PR enables Smart Transactions (STX) in swap and bridge tests by:

1. Adding a new helper smart-transactions-mocks.ts that mocks STX API endpoints (/getFees, /submitTransactions, /batchStatus, /getTxStatus) and forwards signed transactions to Anvil for actual mining.
2. Removing .withDisabledSmartTransactions() from all 5 test specs (swap-action-smoke, bridge-action-smoke, swap-action-regression, swap-token-chart, swap-token-rwa).
3. Integrating setupSmartTransactionsMocks into each test's testSpecificMock setup.
4. Increasing timeout in swap-token-chart from 120s to 180s to accommodate the longer STX flow.

SmokeTrade is selected because the directly modified tests are swap and bridge smoke/regression tests. SmokeConfirmations is required per SmokeTrade tag description: 'When selecting SmokeTrade for swap or bridge flows, also select SmokeConfirmations (transaction confirmations are part of the flow).' No other tags are impacted as changes are purely within swap/bridge test infrastructure with no app code modifications.

Performance Test Selection:
No app code was changed - all modifications are within E2E test infrastructure (test specs and test helpers). Smart Transactions mocking changes do not affect app rendering performance, data loading, or any UI components. No performance tests are warranted.

View GitHub Actions results

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

✅ E2E Fixture Validation — Schema is up to date
18 value mismatches detected (expected — fixture represents an existing user).
View details