diff --git a/packages/boot/test/bootstrapTests/test-addAssets.ts b/packages/boot/test/bootstrapTests/test-addAssets.ts
new file mode 100644
index 00000000000..940f370f3e0
--- /dev/null
+++ b/packages/boot/test/bootstrapTests/test-addAssets.ts
@@ -0,0 +1,196 @@
+import { test as anyTest } from '@agoric/zoe/tools/prepare-test-env-ava.js';
+
+import type { TestFn } from 'ava';
+
+import { TimeMath } from '@agoric/time';
+import {
+  LiquidationTestContext,
+  makeLiquidationTestContext,
+} from './liquidation.ts';
+
+const test = anyTest as TestFn<LiquidationTestContext>;
+
+const auctioneerPath = 'published.auction';
+
+test.before(async t => {
+  t.context = await makeLiquidationTestContext(t);
+  const proposal = await t.context.buildProposal({
+    package: 'builders',
+    packageScriptName: 'build:add-STARS-proposal',
+  });
+
+  t.log('installing proposal');
+  // share a single proposal so tests don't stomp on each other's files; It has
+  // to be edited by each so as not to re-use keywords.
+  for await (const bundle of proposal.bundles) {
+    await t.context.controller.validateAndInstallBundle(bundle);
+  }
+  t.log('installed', proposal.bundles.length, 'bundles');
+  // @ts-expect-error override
+  t.context.proposal = proposal;
+  t.log('installed', proposal.bundles.length, 'bundles');
+});
+
+test.after.always(t => {
+  // This will fail if a subset of tests are run. It detects that three
+  // collaterals were added to the auction after ATOM.
+  t.like(t.context.readLatest(`${auctioneerPath}.book3`), {
+    currentPriceLevel: null,
+  });
+  return t.context.shutdown && t.context.shutdown();
+});
+
+test('addAsset to quiescent auction', async t => {
+  const {
+    advanceTimeTo,
+    readLatest,
+    // @ts-expect-error override
+    proposal,
+  } = t.context;
+
+  // stringify, modify and parse because modifying a deep copy was fragile.
+  const proposalJSON = JSON.stringify(proposal);
+  const proposalMod = proposalJSON.replaceAll('STARS', 'COMETS');
+  const proposalNew = JSON.parse(proposalMod);
+
+  const bridgeMessage = {
+    type: 'CORE_EVAL',
+    evals: proposalNew.evals,
+  };
+
+  const { EV } = t.context.runUtils;
+
+  const auctioneerKit = await EV.vat('bootstrap').consumeItem('auctioneerKit');
+  const schedules = await EV(auctioneerKit.creatorFacet).getSchedule();
+  const { liveAuctionSchedule, nextAuctionSchedule } = schedules;
+  const nextEndTime = liveAuctionSchedule
+    ? liveAuctionSchedule.endTime
+    : nextAuctionSchedule.endTime;
+  const fiveMinutes = harden({
+    relValue: 5n * 60n,
+    timerBrand: nextEndTime.timerBrand,
+  });
+  const nextQuiescentTime = TimeMath.addAbsRel(nextEndTime, fiveMinutes);
+  await advanceTimeTo(nextQuiescentTime);
+
+  const coreEvalBridgeHandler = await EV.vat('bootstrap').consumeItem(
+    'coreEvalBridgeHandler',
+  );
+  await EV(coreEvalBridgeHandler).fromBridge(bridgeMessage);
+  t.log('add-STARS proposal executed');
+
+  t.like(readLatest(`${auctioneerPath}.book1`), {
+    currentPriceLevel: null,
+  });
+});
+
+test('addAsset to active auction', async t => {
+  const {
+    advanceTimeTo,
+    readLatest,
+    // @ts-expect-error override
+    proposal,
+  } = t.context;
+  const { EV } = t.context.runUtils;
+
+  t.like(readLatest(`${auctioneerPath}.book0`), { startPrice: null });
+
+  const auctioneerKit = await EV.vat('bootstrap').consumeItem('auctioneerKit');
+  const schedules = await EV(auctioneerKit.creatorFacet).getSchedule();
+  const { nextAuctionSchedule } = schedules;
+  t.truthy(nextAuctionSchedule);
+  const nextStartTime = nextAuctionSchedule.startTime;
+  const fiveMinutes = harden({
+    relValue: 5n * 60n,
+    timerBrand: nextStartTime.timerBrand,
+  });
+  const futureBusyTime = TimeMath.addAbsRel(nextStartTime, fiveMinutes);
+
+  await advanceTimeTo(futureBusyTime);
+
+  t.log('launching proposal');
+
+  const proposalJSON = JSON.stringify(proposal);
+  const proposalMod = proposalJSON
+    .replaceAll('STARS', 'PLANETS')
+    .replaceAll('ibc/987C17B1', 'ibc/987C17B2');
+  const proposalNew = JSON.parse(proposalMod);
+
+  const bridgeMessage = {
+    type: 'CORE_EVAL',
+    evals: proposalNew.evals,
+  };
+  t.log({ bridgeMessage });
+
+  const coreEvalBridgeHandler = await EV.vat('bootstrap').consumeItem(
+    'coreEvalBridgeHandler',
+  );
+  EV(coreEvalBridgeHandler).fromBridge(bridgeMessage);
+
+  const nextEndTime = nextAuctionSchedule.endTime;
+  const afterEndTime = TimeMath.addAbsRel(nextEndTime, fiveMinutes);
+  await advanceTimeTo(afterEndTime);
+
+  const schedulesAfter = await EV(auctioneerKit.creatorFacet).getSchedule();
+  // brand equality is broken
+  t.truthy(
+    schedules.nextAuctionSchedule.endTime.absValue <
+      schedulesAfter.nextAuctionSchedule.endTime.absValue,
+  );
+
+  t.like(readLatest(`${auctioneerPath}.book1`), { currentPriceLevel: null });
+});
+
+test('addAsset to auction starting soon', async t => {
+  const {
+    advanceTimeTo,
+    // @ts-expect-error override
+    proposal,
+    readLatest,
+  } = t.context;
+  const { EV } = t.context.runUtils;
+
+  const auctioneerKit = await EV.vat('bootstrap').consumeItem('auctioneerKit');
+  const schedules = await EV(auctioneerKit.creatorFacet).getSchedule();
+  const { nextAuctionSchedule } = schedules;
+  t.truthy(nextAuctionSchedule);
+  const nextStartTime = nextAuctionSchedule.startTime;
+  const fiveMinutes = harden({
+    relValue: 5n * 60n,
+    timerBrand: nextStartTime.timerBrand,
+  });
+  const tooCloseTime = TimeMath.subtractAbsRel(nextStartTime, fiveMinutes);
+
+  await advanceTimeTo(tooCloseTime);
+
+  const proposalJSON = JSON.stringify(proposal);
+  const proposalMod = proposalJSON
+    .replaceAll('STARS', 'MOONS')
+    .replaceAll('ibc/987C17B1', 'ibc/987C17B3');
+  const proposalNew = JSON.parse(proposalMod);
+
+  t.log('launching proposal');
+  const bridgeMessage = {
+    type: 'CORE_EVAL',
+    evals: proposalNew.evals,
+  };
+  t.log({ bridgeMessage });
+
+  const coreEvalBridgeHandler = await EV.vat('bootstrap').consumeItem(
+    'coreEvalBridgeHandler',
+  );
+  EV(coreEvalBridgeHandler).fromBridge(bridgeMessage);
+
+  const nextEndTime = nextAuctionSchedule.endTime;
+  const afterEndTime = TimeMath.addAbsRel(nextEndTime, fiveMinutes);
+  await advanceTimeTo(afterEndTime);
+
+  t.log('add-STARS proposal executed');
+
+  const schedulesAfter = await EV(auctioneerKit.creatorFacet).getSchedule();
+  t.truthy(
+    schedules.nextAuctionSchedule.endTime.absValue <
+      schedulesAfter.nextAuctionSchedule.endTime.absValue,
+  );
+  t.like(readLatest(`${auctioneerPath}.book1`), { currentPriceLevel: null });
+});