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composableStableV1.fork.ts
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composableStableV1.fork.ts
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import hre from 'hardhat';
import { expect } from 'chai';
import { Contract } from 'ethers';
import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers';
import { StablePoolEncoder } from '@helpers/models/pools/stable/encoder';
import { bn, fp } from '@helpers/numbers';
import { MAX_UINT256 } from '@helpers/constants';
import { defaultAbiCoder } from '@ethersproject/abi/lib/abi-coder';
import * as expectEvent from '@helpers/expectEvent';
import { describeForkTest, getSigner, impersonate, getForkedNetwork, Task, TaskMode } from '@src';
import {
DAI,
USDC,
amplificationParameter,
cacheDurations,
exemptFlags,
rateProviders,
swapFeePercentage,
tokens,
initialBalances,
PoolKind,
} from './helpers/sharedStableParams';
describeForkTest.skip('BatchRelayerLibrary - Composable Stable V1', 'mainnet', 16083775, function () {
let task: Task;
let relayer: Contract, library: Contract;
let vault: Contract, authorizer: Contract;
before('run task', async () => {
task = new Task('20230314-batch-relayer-v5', TaskMode.TEST, getForkedNetwork(hre));
await task.run({ force: true });
library = await task.deployedInstance('BatchRelayerLibrary');
relayer = await task.instanceAt('BalancerRelayer', await library.getEntrypoint());
});
before('load vault and authorizer', async () => {
const vaultTask = new Task('20210418-vault', TaskMode.READ_ONLY, getForkedNetwork(hre));
vault = await vaultTask.deployedInstance('Vault');
authorizer = await vaultTask.instanceAt('Authorizer', await vault.getAuthorizer());
});
const LARGE_TOKEN_HOLDER = '0xf977814e90da44bfa03b6295a0616a897441acec';
enum ComposableStablePoolV1ExitKind {
EXACT_BPT_IN_FOR_ONE_TOKEN_OUT = 0,
BPT_IN_FOR_EXACT_TOKENS_OUT,
}
let owner: SignerWithAddress, whale: SignerWithAddress;
let pool: Contract, factory: Contract;
let usdc: Contract, dai: Contract;
let poolId: string;
let stableTask: Task;
before('get signers', async () => {
owner = await getSigner();
whale = await impersonate(LARGE_TOKEN_HOLDER);
});
before('approve relayer at the authorizer', async () => {
const relayerActionIds = await Promise.all(
['swap', 'batchSwap', 'joinPool', 'exitPool', 'setRelayerApproval', 'manageUserBalance'].map((action) =>
vault.getActionId(vault.interface.getSighash(action))
)
);
// We impersonate an account with the default admin role in order to be able to approve the relayer. This assumes
// such an account exists.
const admin = await impersonate(await authorizer.getRoleMember(await authorizer.DEFAULT_ADMIN_ROLE(), 0));
// Grant relayer permission to call all relayer functions
await authorizer.connect(admin).grantRoles(relayerActionIds, relayer.address);
});
before('approve relayer by the user', async () => {
await vault.connect(owner).setRelayerApproval(owner.address, relayer.address, true);
});
before('load tokens and approve', async () => {
dai = await task.instanceAt('IERC20', DAI);
usdc = await task.instanceAt('IERC20', USDC);
await dai.connect(whale).approve(vault.address, MAX_UINT256);
await usdc.connect(whale).approve(vault.address, MAX_UINT256);
});
before('run composable stable pool task', async () => {
stableTask = new Task('20220906-composable-stable-pool', TaskMode.READ_ONLY, getForkedNetwork(hre));
factory = await stableTask.deployedInstance('ComposableStablePoolFactory');
});
before('deploy composable stable pool', async () => {
const tx = await factory.create(
'SP',
'SPT',
tokens,
amplificationParameter,
rateProviders,
cacheDurations,
exemptFlags,
swapFeePercentage,
owner.address
);
const event = expectEvent.inReceipt(await tx.wait(), 'PoolCreated');
pool = await stableTask.instanceAt('ComposableStablePool', event.args.pool);
expect(await factory.isPoolFromFactory(pool.address)).to.be.true;
poolId = await pool.getPoolId();
const [registeredAddress] = await vault.getPool(poolId);
expect(registeredAddress).to.equal(pool.address);
});
before('initialize composable stable pool', async () => {
const bptIndex = await pool.getBptIndex();
const composableInitialBalances = Array.from({ length: tokens.length + 1 }).map((_, i) =>
i == bptIndex ? 0 : i < bptIndex ? initialBalances[i] : initialBalances[i - 1]
);
const { tokens: allTokens } = await vault.getPoolTokens(poolId);
const userData = StablePoolEncoder.joinInit(composableInitialBalances);
await vault.connect(whale).joinPool(poolId, whale.address, owner.address, {
assets: allTokens,
maxAmountsIn: Array(tokens.length + 1).fill(MAX_UINT256),
fromInternalBalance: false,
userData,
});
});
// V1 does not support proportional exits
it('can exit with exact tokens through the relayer', async () => {
const bptBalance = await pool.balanceOf(owner.address);
expect(bptBalance).to.gt(0);
const vaultDAIBalanceBeforeExit = await dai.balanceOf(vault.address);
const ownerDAIBalanceBeforeExit = await dai.balanceOf(owner.address);
const { tokens: allTokens } = await vault.getPoolTokens(poolId);
const amountsOut = [fp(100), bn(100e6)];
const userData = defaultAbiCoder.encode(
['uint256', 'uint256[]', 'uint256'],
[ComposableStablePoolV1ExitKind.BPT_IN_FOR_EXACT_TOKENS_OUT, amountsOut, MAX_UINT256]
);
const exitCalldata = library.interface.encodeFunctionData('exitPool', [
poolId,
PoolKind.COMPOSABLE_STABLE,
owner.address,
owner.address,
{
assets: allTokens,
minAmountsOut: Array(tokens.length + 1).fill(0),
toInternalBalance: false,
userData,
},
[],
]);
await relayer.connect(owner).multicall([exitCalldata]);
const vaultDAIBalanceAfterExit = await dai.balanceOf(vault.address);
const ownerDAIBalanceAfterExit = await dai.balanceOf(owner.address);
expect(vaultDAIBalanceAfterExit).to.lt(vaultDAIBalanceBeforeExit);
expect(ownerDAIBalanceAfterExit).to.gt(ownerDAIBalanceBeforeExit);
});
});