chore: scheduled basic e2e tests for evm testnet endpoint

.github/workflows/e2e-evm-cron.yml

@@ -0,0 +1,47 @@
+name: EVM E2E Cron
+
+on:
+  schedule:
+    - cron: '0 * * * *' # every hour at 00 min
+    # cron syntax: https://jasonet.co/posts/scheduled-actions/
+
+jobs:
+  # The "evm-e2e-cron" job runs end-to-end tests on a schedule against instances
+  # of Nibiru to ensure core functionality remains stable. This is intended to
+  # highlight any outage or catch degredations in public endpoint functionality
+  # early. Failures trigger immediate Slack notifications to alert the team.
+  #
+  # This workflow:
+  # 1. Executes basic EVM integration tests against the testnet
+  # 2. Uses a dedicated test wallet (configured via secrets)
+  # 3. Reports failures to the testnet Slack channel
+  #
+  # Environment requirements:
+  # - WALLET_MNEMONIC_TESTNET: Secret for test wallet access
+  # - SLACK_WEBHOOK_TESTNET: Webhook URL for failure notifications
+  evm-e2e-cron:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: 'just install'
+        run: just install
+        working-directory: 'evm-e2e'
+
+      - name: 'Run tests (just test-basic)'
+        run: just test-basic
+        working-directory: 'evm-e2e'
+        env:
+          JSON_RPC_ENDPOINT: https://evm-rpc.testnet-1.nibiru.fi
+          MNEMONIC: ${{ secrets.WALLET_MNEMONIC_TESTNET }}
+
+      - name: Send failure to slack channel
+        if: always()
+        uses: ravsamhq/notify-slack-action@v2
+        with:
+          status: ${{ job.status }}
+          notify_when: 'failure'
+          notification_title: 'EVM basic tests failed on Testnet'
+          message_format: '{emoji} *{workflow}* {status_message} Run: {run_url}'
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_TESTNET }}

CHANGELOG.md

@@ -100,10 +100,12 @@ tests for race conditions within funtoken precompile
 - [#2100](https://github.com/NibiruChain/nibiru/pull/2100) - refactor: cleanup statedb and precompile sections
 - [#2101](https://github.com/NibiruChain/nibiru/pull/2101) - fix(evm): tx receipt proper marshalling
 - [#2105](https://github.com/NibiruChain/nibiru/pull/2105) - test(evm): precompile call with revert
+- [#2106](https://github.com/NibiruChain/nibiru/pull/2106) - chore: scheduled basic e2e tests for evm testnet endpoint
 - [#2107](https://github.com/NibiruChain/nibiru/pull/2107) -
 feat(evm-funtoken-precompile): Implement methods: balance, bankBalance, whoAmI
 - [#2108](https://github.com/NibiruChain/nibiru/pull/2108) - fix(evm): removed deprecated root key from eth_getTransactionReceipt
 
+
 #### Nibiru EVM | Before Audit 1 - 2024-10-18
 
 - [#1837](https://github.com/NibiruChain/nibiru/pull/1837) - feat(eth): protos, eth types, and evm module types

evm-e2e/justfile

@@ -16,6 +16,10 @@ install:
 test:
   npm test
 
+# Runs tx receipt tests. Used for testnet quick check.
+test-basic:
+  npm test -- tx_receipt.test.ts
+
 # Format
 fmt: 
   npm run format

evm-e2e/test/tx_receipt.test.ts

@@ -10,7 +10,7 @@ describe('Transaction Receipt Tests', () => {
   let recipient = ethers.Wallet.createRandom().address;
 
   it('simple transfer receipt', async () => {
-    const value = ethers.parseEther('1');
+    const value = ethers.parseEther('0.0001');
     const tx = await account.sendTransaction({
       to: recipient,
       value,