liquidateMaxLps.ts

import * as anchor from '@coral-xyz/anchor';
import {
	BASE_PRECISION,
	BN,
	OracleSource,
	OracleGuardRails,
	TestClient,
	PRICE_PRECISION,
	PositionDirection,
	Wallet,
	LIQUIDATION_PCT_PRECISION,
} from '../sdk/src';

import { Program } from '@coral-xyz/anchor';

import { Keypair, LAMPORTS_PER_SOL, PublicKey } from '@solana/web3.js';

import {
	mockUSDCMint,
	mockUserUSDCAccount,
	initializeQuoteSpotMarket,
	mockOracleNoProgram,
	setFeedPriceNoProgram,
} from './testHelpers';
import { PERCENTAGE_PRECISION } from '../sdk';
import { startAnchor } from 'solana-bankrun';
import { TestBulkAccountLoader } from '../sdk/src/accounts/testBulkAccountLoader';
import { BankrunContextWrapper } from '../sdk/src/bankrun/bankrunConnection';

describe('max lp liq', () => {
	const chProgram = anchor.workspace.Drift as Program;

	let driftClient: TestClient;

	let bankrunContextWrapper: BankrunContextWrapper;

	let bulkAccountLoader: TestBulkAccountLoader;

	let usdcMint;
	let userUSDCAccount;

	const liquidatorKeyPair = new Keypair();
	let liquidatorUSDCAccount: Keypair;
	let liquidatorDriftClient: TestClient;

	// ammInvariant == k == x * y
	const mantissaSqrtScale = new BN(Math.sqrt(PRICE_PRECISION.toNumber()));
	const ammInitialQuoteAssetReserve = new anchor.BN(5 * 10 ** 13).mul(
		mantissaSqrtScale
	);
	const ammInitialBaseAssetReserve = new anchor.BN(5 * 10 ** 13).mul(
		mantissaSqrtScale
	);

	const usdcAmount = new BN(10 * 10 ** 6);
	const nLpShares = new BN(10000000);

	let oracle: PublicKey;
	const numMkts = 8;

	before(async () => {
		const context = await startAnchor('', [], []);

		bankrunContextWrapper = new BankrunContextWrapper(context);

		bulkAccountLoader = new TestBulkAccountLoader(
			bankrunContextWrapper.connection,
			'processed',
			1
		);

		usdcMint = await mockUSDCMint(bankrunContextWrapper);
		userUSDCAccount = await mockUserUSDCAccount(
			usdcMint,
			usdcAmount,
			bankrunContextWrapper
		);

		oracle = await mockOracleNoProgram(bankrunContextWrapper, 1);

		driftClient = new TestClient({
			connection: bankrunContextWrapper.connection.toConnection(),
			wallet: bankrunContextWrapper.provider.wallet,
			programID: chProgram.programId,
			opts: {
				commitment: 'confirmed',
			},
			perpMarketIndexes: [0],
			spotMarketIndexes: [0],
			subAccountIds: [],
			oracleInfos: [
				{
					publicKey: oracle,
					source: OracleSource.PYTH,
				},
			],
			accountSubscription: {
				type: 'polling',
				accountLoader: bulkAccountLoader,
			},
		});

		await driftClient.initialize(usdcMint.publicKey, true);
		await driftClient.subscribe();

		await driftClient.updateInitialPctToLiquidate(
			LIQUIDATION_PCT_PRECISION.toNumber()
		);

		await initializeQuoteSpotMarket(driftClient, usdcMint.publicKey);
		await driftClient.updatePerpAuctionDuration(new BN(0));

		const periodicity = new BN(0);

		for (let i = 0; i < numMkts; i++) {
			await driftClient.initializePerpMarket(
				i,
				oracle,
				ammInitialBaseAssetReserve,
				ammInitialQuoteAssetReserve,
				periodicity
			);
		}

		await driftClient.initializeUserAccountAndDepositCollateral(
			usdcAmount,
			userUSDCAccount.publicKey
		);

		for (let i = 0; i < numMkts; i++) {
			await driftClient.openPosition(
				PositionDirection.LONG,
				new BN(175)
					.mul(BASE_PRECISION)
					.div(new BN(10))
					.divn(numMkts * 4),
				i,
				new BN(0)
			);

			const txSig = await driftClient.addPerpLpShares(
				nLpShares.divn(numMkts * 4),
				i
			);

			bankrunContextWrapper.connection.printTxLogs(txSig);
		}

		// provider.connection.requestAirdrop(liquidatorKeyPair.publicKey, 10 ** 9);
		bankrunContextWrapper.fundKeypair(liquidatorKeyPair, LAMPORTS_PER_SOL);
		liquidatorUSDCAccount = await mockUserUSDCAccount(
			usdcMint,
			usdcAmount,
			bankrunContextWrapper,
			liquidatorKeyPair.publicKey
		);
		liquidatorDriftClient = new TestClient({
			connection: bankrunContextWrapper.connection.toConnection(),
			wallet: new Wallet(liquidatorKeyPair),
			programID: chProgram.programId,
			opts: {
				commitment: 'confirmed',
			},
			activeSubAccountId: 0,
			perpMarketIndexes: [0, 1, 2, 3, 4, 5, 6, 7],
			spotMarketIndexes: [0],
			subAccountIds: [],
			oracleInfos: [
				{
					publicKey: oracle,
					source: OracleSource.PYTH,
				},
			],
			accountSubscription: {
				type: 'polling',
				accountLoader: bulkAccountLoader,
			},
		});
		await liquidatorDriftClient.subscribe();

		await liquidatorDriftClient.initializeUserAccountAndDepositCollateral(
			usdcAmount,
			liquidatorUSDCAccount.publicKey
		);
	});

	after(async () => {
		await driftClient.unsubscribe();
		await liquidatorDriftClient.unsubscribe();
	});

	it('liquidate', async () => {
		await setFeedPriceNoProgram(bankrunContextWrapper, 0.1, oracle);

		const oracleGuardRails: OracleGuardRails = {
			priceDivergence: {
				markOraclePercentDivergence: PERCENTAGE_PRECISION,
				oracleTwap5MinPercentDivergence: PERCENTAGE_PRECISION.mul(new BN(10)),
			},
			validity: {
				slotsBeforeStaleForAmm: new BN(100),
				slotsBeforeStaleForMargin: new BN(100),
				confidenceIntervalMaxSize: new BN(100000),
				tooVolatileRatio: new BN(11), // allow 11x change
			},
		};

		await driftClient.updateOracleGuardRails(oracleGuardRails);

		const txSig = await liquidatorDriftClient.liquidatePerp(
			await driftClient.getUserAccountPublicKey(),
			driftClient.getUserAccount(),
			0,
			new BN(175).mul(BASE_PRECISION).div(new BN(10)).divn(numMkts),
			undefined,
			{
				computeUnits: 300_000,
			}
		);

		bankrunContextWrapper.connection.printTxLogs(txSig);

		const cus =
			bankrunContextWrapper.connection.findComputeUnitConsumption(txSig);
		console.log(cus);
	});
});