test: add mock for batch transactions

[cortisiko]

Description

Changelog

CHANGELOG entry:

Related issues

Fixes:

Manual testing steps

Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Contributor Docs and MetaMask Mobile Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

---

Note

Adds Polygon/EIP-7702 and transaction-sentinel mocks, refactors Polymarket mocks (cash-out, RPC, event details), and updates/extends E2E tests including a withdraw spec scaffold.

• Feature flags
  • Add Polygon (0x89) entries to confirmations_eip_7702.contracts and extend supportedChains.
• Polymarket mocks
  • EIP-7702/Polygon support: Add POLYGON_EIP7702_CONTRACT_ADDRESS and EIP7702_CODE_FORMAT; return EIP-7702 code for eth_getCode of USER_WALLET_ADDRESS.
  • Transaction Sentinel: New polymarket-transaction-sentinel-response.ts and POLYMARKET_TRANSACTION_SENTINEL_MOCKS for infura_simulateTransactions.
  • RPC enhancements: Broaden /proxy matcher; handle proxy wallet eth_call selector 0xaffed0e0; add eth_getTransactionCount and eth_estimateGas responses.
  • Cash-out flow: Consolidate into POLYMARKET_POST_CASH_OUT_MOCKS (mocks CLOB order, updates USDC balance, high-priority balance refresh); deprecate POLYMARKET_CASH_OUT_BALANCE_LOAD_MOCKS; add POLYMARKET_WITHDRAW_BALANCE_LOAD_MOCKS; helper MOCK_BATCH_TRANSACTIONS.
  • Event details: Rename default event export to POLYMARKET_EVENT_DETAILS_BLUE_JAYS_MARINERS_RESPONSE; add/export POLYMARKET_EVENT_DETAILS_SPURS_PELICANS_RESPONSE; update mocks to use them.
  • RPC responses: Add TRANSACTION_COUNT_RESULT.
• E2E tests
  • Update predict-cash-out.spec.ts to use new cash-out mocks and remove force-refresh mock.
  • Add predict-withdraw.spec.ts (withdraw flow scaffold) using new mocks.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.06%. Comparing base (744b8ce) to head (ecebbe4).
⚠️ Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #21962      +/-   ##
==========================================
+ Coverage   77.04%   77.06%   +0.02%     
==========================================
  Files        3765     3767       +2     
  Lines       95826    95853      +27     
  Branches    18616    18622       +6     
==========================================
+ Hits        73833    73873      +40     
+ Misses      16918    16906      -12     
+ Partials     5075     5074       -1     

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[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