From 680a9a0bf19ebcd928075903e8ab711299a5ff96 Mon Sep 17 00:00:00 2001
From: Dan Connolly <dckc@madmode.com>
Date: Thu, 7 Mar 2024 17:31:47 -0600
Subject: [PATCH] test(test-vote-fee-change): start governed; change Fee

---
 contract/test/test-vote-fee-change.js | 109 ++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 contract/test/test-vote-fee-change.js

diff --git a/contract/test/test-vote-fee-change.js b/contract/test/test-vote-fee-change.js
new file mode 100644
index 00000000..c87c69a1
--- /dev/null
+++ b/contract/test/test-vote-fee-change.js
@@ -0,0 +1,109 @@
+// @ts-check
+import { test as anyTest } from '@agoric/zoe/tools/prepare-test-env-ava.js';
+import { createRequire } from 'node:module';
+import { E, Far } from '@endo/far';
+
+import { extractPowers } from '@agoric/vats/src/core/utils.js';
+import { AmountMath } from '@agoric/ertp/src/amountMath.js';
+import { mockBootstrapPowers } from './boot-tools.js';
+import {
+  installContract,
+  permit,
+  startContract,
+} from '../src/swaparoo.proposal.js';
+import { makeBundleCacheContext } from '../tools/bundle-tools.js';
+import { installPuppetGovernance } from './lib-gov-test/puppet-gov.js';
+import { NonNullish } from '../src/objectTools.js';
+
+/** @typedef {import('./wallet-tools.js').MockWallet} MockWallet */
+
+/** @type {import('ava').TestFn<Awaited<ReturnType<makeTestContext>>>} */
+const test = anyTest;
+
+const nodeRequire = createRequire(import.meta.url);
+
+const contractName = 'swaparoo';
+const assets = {
+  [contractName]: nodeRequire.resolve(`../src/${contractName}.contract.js`),
+  invitationMakerContract: nodeRequire.resolve(
+    '@agoric/zoe/src/contracts/automaticRefund.js',
+  ),
+};
+
+const makeTestContext = async t => {
+  const bc = await makeBundleCacheContext(t);
+  t.log('bootstrap');
+  const { powers, vatAdminState } = await mockBootstrapPowers(t.log);
+  return { ...bc, powers, vatAdminState };
+};
+
+test.before(async t => (t.context = await makeTestContext(t)));
+
+// a source of arbitrary invitations
+const mockElectorate = async (zoe, bundleCache) => {
+  const installation = await E(zoe).install(
+    await bundleCache.load(assets.invitationMakerContract),
+  );
+  const arbInstance = await E(zoe).startInstance(installation);
+  const committeeCreatorFacet = Far('Electorate CF', {
+    getPoserInvitation: async () => E(arbInstance.publicFacet).makeInvitation(),
+  });
+  return { creatorFacet: committeeCreatorFacet };
+};
+
+test.serial('start governed swap contract', async t => {
+  const { bundleCache, powers, vatAdminState } = t.context;
+  const { zoe } = powers.consume;
+  await installPuppetGovernance(zoe, powers.installation.produce, bundleCache);
+
+  powers.produce[`${contractName}CommitteeKit`].resolve(
+    mockElectorate(zoe, bundleCache),
+  );
+
+  const bundle = await bundleCache.load(assets.swaparoo, contractName);
+  const bundleID = `b1-${bundle.endoZipBase64Sha512}`;
+  t.log('publish bundle', bundleID.slice(0, 8));
+  vatAdminState.installBundle(bundleID, bundle);
+
+  t.log('install contract');
+  const config = { options: { [contractName]: { bundleID } } };
+  await installContract(powers, config);
+  t.log('start contract');
+  const permittedPowers = extractPowers(permit, powers);
+  await startContract(permittedPowers);
+
+  const instance = await powers.instance.consume[contractName];
+  t.log(instance);
+  t.is(typeof instance, 'object');
+
+  const puppetGovernors = {
+    [contractName]: E.get(powers.consume[`${contractName}Kit`])
+      .governorCreatorFacet,
+  };
+
+  Object.assign(t.context.shared, { powers, puppetGovernors });
+});
+
+test.serial('vote to change swap fee', async t => {
+  const { powers, shared } = t.context;
+  const { puppetGovernors } = shared;
+  const { zoe } = powers.consume;
+
+  const istBrand = await powers.brand.consume.IST;
+  const CENT = 1_000_000n / 100n;
+  const targetFee = AmountMath.make(istBrand, 50n * CENT);
+
+  const instance = await powers.instance.consume[contractName];
+  const swapPub = E(zoe).getPublicFacet(instance);
+
+  const changes = { Fee: targetFee };
+  t.log('changeParams', changes);
+  const swapGov = NonNullish(puppetGovernors[contractName]);
+  await E(swapGov).changeParams(harden({ changes }));
+  const x = await E(swapPub).getAmount('Fee');
+  t.deepEqual(x, targetFee);
+});
+
+test.todo('wallet-based voting');
+test.todo('swap after changing fee');
+test.todo('e2e swap after changing fee with voters');