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WeightedPool.t.sol
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WeightedPool.t.sol
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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.24;
import "forge-std/Test.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { IRateProvider } from "@balancer-labs/v3-interfaces/contracts/solidity-utils/helpers/IRateProvider.sol";
import { TokenConfig, PoolRoleAccounts } from "@balancer-labs/v3-interfaces/contracts/vault/VaultTypes.sol";
import { IVaultErrors } from "@balancer-labs/v3-interfaces/contracts/vault/IVaultErrors.sol";
import { IBasePool } from "@balancer-labs/v3-interfaces/contracts/vault/IBasePool.sol";
import { IVault } from "@balancer-labs/v3-interfaces/contracts/vault/IVault.sol";
import { CastingHelpers } from "@balancer-labs/v3-solidity-utils/contracts/helpers/CastingHelpers.sol";
import { InputHelpers } from "@balancer-labs/v3-solidity-utils/contracts/helpers/InputHelpers.sol";
import { ArrayHelpers } from "@balancer-labs/v3-solidity-utils/contracts/test/ArrayHelpers.sol";
import { WeightedMath } from "@balancer-labs/v3-solidity-utils/contracts/math/WeightedMath.sol";
import { BasePoolTest } from "@balancer-labs/v3-vault/test/foundry/utils/BasePoolTest.sol";
import { PoolHooksMock } from "@balancer-labs/v3-vault/contracts/test/PoolHooksMock.sol";
import { WeightedPoolFactory } from "../../contracts/WeightedPoolFactory.sol";
import { WeightedPool } from "../../contracts/WeightedPool.sol";
import { WeightedPoolContractsDeployer } from "./utils/WeightedPoolContractsDeployer.sol";
contract WeightedPoolTest is WeightedPoolContractsDeployer, BasePoolTest {
using CastingHelpers for address[];
using ArrayHelpers for *;
uint256 constant DEFAULT_SWAP_FEE = 1e16; // 1%
uint256 constant TOKEN_AMOUNT = 1e3 * 1e18;
uint256[] internal weights;
uint256 daiIdx;
uint256 usdcIdx;
function setUp() public virtual override {
expectedAddLiquidityBptAmountOut = TOKEN_AMOUNT;
tokenAmountIn = TOKEN_AMOUNT / 4;
isTestSwapFeeEnabled = false;
BasePoolTest.setUp();
(daiIdx, usdcIdx) = getSortedIndexes(address(dai), address(usdc));
poolMinSwapFeePercentage = 0.001e16; // 0.001%
poolMaxSwapFeePercentage = 10e16;
}
function createPool() internal override returns (address) {
IERC20[] memory sortedTokens = InputHelpers.sortTokens(
[address(dai), address(usdc)].toMemoryArray().asIERC20()
);
for (uint256 i = 0; i < sortedTokens.length; i++) {
poolTokens.push(sortedTokens[i]);
tokenAmounts.push(TOKEN_AMOUNT);
}
factory = deployWeightedPoolFactory(IVault(address(vault)), 365 days, "Factory v1", "Pool v1");
weights = [uint256(50e16), uint256(50e16)].toMemoryArray();
PoolRoleAccounts memory roleAccounts;
// Allow pools created by `factory` to use poolHooksMock hooks
PoolHooksMock(poolHooksContract).allowFactory(address(factory));
WeightedPool newPool = WeightedPool(
WeightedPoolFactory(address(factory)).create(
"ERC20 Pool",
"ERC20POOL",
vault.buildTokenConfig(sortedTokens),
weights,
roleAccounts,
DEFAULT_SWAP_FEE,
poolHooksContract,
false, // Do not enable donations
false, // Do not disable unbalanced add/remove liquidity
ZERO_BYTES32
)
);
return address(newPool);
}
function initPool() internal override {
vm.startPrank(lp);
bptAmountOut = _initPool(
pool,
tokenAmounts,
// Account for the precision loss
expectedAddLiquidityBptAmountOut - DELTA
);
vm.stopPrank();
}
function testGetBptRate() public {
vm.expectRevert(WeightedPool.WeightedPoolBptRateUnsupported.selector);
IRateProvider(pool).getRate();
}
function testFailSwapFeeTooLow() public {
TokenConfig[] memory tokenConfigs = new TokenConfig[](2);
tokenConfigs[daiIdx].token = IERC20(dai);
tokenConfigs[usdcIdx].token = IERC20(usdc);
PoolRoleAccounts memory roleAccounts;
address lowFeeWeightedPool = WeightedPoolFactory(address(factory)).create(
"ERC20 Pool",
"ERC20POOL",
tokenConfigs,
[uint256(50e16), uint256(50e16)].toMemoryArray(),
roleAccounts,
IBasePool(pool).getMinimumSwapFeePercentage() - 1, // Swap fee too low
poolHooksContract,
false, // Do not enable donations
false, // Do not disable unbalanced add/remove liquidity
"Low fee pool"
);
vm.expectRevert(IVaultErrors.SwapFeePercentageTooLow.selector);
factoryMock.registerTestPool(lowFeeWeightedPool, tokenConfigs);
}
}