From ae1841138da05f34861c133175cdf7cd83569b46 Mon Sep 17 00:00:00 2001
From: Dan Connolly <connolly@agoric.com>
Date: Mon, 2 Dec 2024 23:46:41 -0600
Subject: [PATCH] test(boot): core-eval to change fastUsdc.feedPolicy

---
 .../boot/test/fast-usdc/fast-usdc.test.ts     | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/packages/boot/test/fast-usdc/fast-usdc.test.ts b/packages/boot/test/fast-usdc/fast-usdc.test.ts
index 2e09d13f1b3..7effca63560 100644
--- a/packages/boot/test/fast-usdc/fast-usdc.test.ts
+++ b/packages/boot/test/fast-usdc/fast-usdc.test.ts
@@ -1,6 +1,7 @@
 import { test as anyTest } from '@agoric/zoe/tools/prepare-test-env-ava.js';
 
 import type { CctpTxEvidence } from '@agoric/fast-usdc/src/types.js';
+import { configurations } from '@agoric/fast-usdc/src/utils/deploy-config.js';
 import { MockCctpTxEvidences } from '@agoric/fast-usdc/test/fixtures.js';
 import { documentStorageSchema } from '@agoric/governance/tools/storageDoc.js';
 import { unmarshalFromVstorage } from '@agoric/internal/src/marshal.js';
@@ -156,6 +157,33 @@ test.serial('writes status updates to vstorage', async t => {
   await documentStorageSchema(t, storage, doc);
 });
 
+test.serial('core-eval to change feedPolicy', async t => {
+  const { buildProposal, evalProposal, storage } = t.context;
+
+  const { feedPolicy } = configurations.MAINNET;
+  const arbitrum3 = harden({
+    // @ts-expect-error FeedPolicy & Passable is not recognized as an object type?!
+    ...feedPolicy,
+    chainPolicies: {
+      ...feedPolicy.chainPolicies,
+      Arbitrum: { ...feedPolicy.chainPolicies.Arbitrum, confirmations: 3 },
+    },
+  });
+  const materials = buildProposal(
+    '@agoric/builders/scripts/fast-usdc/init-fast-usdc.js',
+    ['--update', '--feedPolicy', JSON.stringify(arbitrum3)],
+  );
+  await evalProposal(materials);
+
+  const raw = storage.data.get('published.fastUsdc.feedPolicy');
+
+  const getLast = (/** @type {string} */ cell) =>
+    JSON.parse(cell).values.at(-1) || assert.fail();
+  const actual = JSON.parse(getLast(raw));
+  t.log('updated', actual.chainPolicies);
+  t.like(actual, { chainPolicies: { Arbitrum: { confirmations: 3 } } });
+});
+
 test.serial('restart contract', async t => {
   const { EV } = t.context.runUtils;
   await null;