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update lending contract

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This commit is contained in:
Kiro
2025-12-29 15:38:25 +08:00
parent dba8fa1af0
commit 2cd584be76
28 changed files with 50 additions and 88 deletions
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51
test/YtLending.t.sol
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@@ -156,7 +156,6 @@ contract YtLendingTest is Test {
borrowPerYearInterestRateSlopeHigh: BORROW_RATE_HIGH,
borrowPerYearInterestRateBase: BORROW_RATE_BASE,
storeFrontPriceFactor: STORE_FRONT_PRICE_FACTOR,
trackingIndexScale: 1e15,
baseBorrowMin: uint104(BASE_BORROW_MIN),
targetReserves: uint104(TARGET_RESERVES),
assetConfigs: assetConfigs
@@ -319,7 +318,7 @@ contract YtLendingTest is Test {
// 借款 $16,000 USDC（80% LTV）
uint256 borrowAmount = 16000e6;
lending.borrow(borrowAmount);
lending.withdraw(borrowAmount);
vm.stopPrank();
// 验证
@@ -335,7 +334,7 @@ contract YtLendingTest is Test {
// Alice 尝试无抵押借款
vm.prank(alice);
vm.expectRevert(ILending.InsufficientCollateral.selector);
lending.borrow(1000e6);
lending.withdraw(1000e6);
}
function test_09_Borrow_FailBelowMinimum() public {
@@ -345,7 +344,7 @@ contract YtLendingTest is Test {
// 尝试借款低于最小值 (< 100 USDC)
vm.expectRevert(ILending.BorrowTooSmall.selector);
lending.borrow(50e6);
lending.withdraw(50e6);
vm.stopPrank();
}
@@ -361,7 +360,7 @@ contract YtLendingTest is Test {
// Bob 存入 10 YTToken，借 8,000 USDC
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
// 时间前进 365 天
@@ -398,7 +397,7 @@ contract YtLendingTest is Test {
// Bob 借款
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
// 每月触发一次利息累积（模拟复利）
@@ -426,7 +425,7 @@ contract YtLendingTest is Test {
// Bob 存入 10 YTToken (价值 $20,000)，借 10,000 USDC
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(10000e6);
lending.withdraw(10000e6);
vm.stopPrank();
// LTV = 50%，健康
@@ -441,7 +440,7 @@ contract YtLendingTest is Test {
// Bob 存入 10 YTToken，借 16,000 USDC（80% LTV）
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(16000e6);
lending.withdraw(16000e6);
vm.stopPrank();
// YTToken 价格暴跌到 $1,800
@@ -463,7 +462,7 @@ contract YtLendingTest is Test {
// 1. Bob 建立借款头寸
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18); // 10 YTToken @ $2000 = $20,000
lending.borrow(16000e6); // $16,000（80% LTV）
lending.withdraw(16000e6); // $16,000（80% LTV）
vm.stopPrank();
// 2. 计算精确的清算价格（1e30 精度）
@@ -507,7 +506,7 @@ contract YtLendingTest is Test {
// 1. Bob 建立不良头寸
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18); // 10 YTToken @ $2000 = $20,000
lending.borrow(16000e6); // $16,000
lending.withdraw(16000e6); // $16,000
vm.stopPrank();
// 2. YTToken 价格跌到 $1,750
@@ -544,12 +543,12 @@ contract YtLendingTest is Test {
// 1. Bob 和 Charlie 都建立不良头寸
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(16000e6);
lending.withdraw(16000e6);
vm.stopPrank();
vm.startPrank(charlie);
lending.supplyCollateral(address(ytVault), 5e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
// 2. 价格下跌
@@ -581,7 +580,7 @@ contract YtLendingTest is Test {
// 1. 先清算一个账户，产生抵押品库存
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(16000e6);
lending.withdraw(16000e6);
vm.stopPrank();
ytFactory.updateVaultPrices(address(ytVault), 1750e30);
@@ -619,7 +618,7 @@ contract YtLendingTest is Test {
// 设置清算库存
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(16000e6);
lending.withdraw(16000e6);
vm.stopPrank();
ytFactory.updateVaultPrices(address(ytVault), 1750e30);
@@ -649,7 +648,7 @@ contract YtLendingTest is Test {
// Bob 小额借款
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18); // 10 YTToken @ $2000 = $20,000
lending.borrow(100e6); // 只借 $100
lending.withdraw(100e6); // 只借 $100
vm.stopPrank();
// 让时间流逝以累积利息，增加 reserves
@@ -701,7 +700,7 @@ contract YtLendingTest is Test {
// Bob 借 5,000 USDC
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(5000e6);
lending.withdraw(5000e6);
vm.stopPrank();
// reserves = balance - totalSupply + totalBorrow
@@ -719,7 +718,7 @@ contract YtLendingTest is Test {
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
// 时间流逝
@@ -746,7 +745,7 @@ contract YtLendingTest is Test {
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
vm.warp(block.timestamp + 365 days);
@@ -799,7 +798,7 @@ contract YtLendingTest is Test {
// Bob 借 8,000 USDC
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
// 利用率 = 8000 / 10000 = 80%
@@ -813,7 +812,7 @@ contract YtLendingTest is Test {
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(5000e6);
lending.withdraw(5000e6);
vm.stopPrank();
uint64 supplyRate = lending.getSupplyRate();
@@ -831,7 +830,7 @@ contract YtLendingTest is Test {
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(8000e6);
lending.withdraw(8000e6);
vm.stopPrank();
uint64 borrowRate = lending.getBorrowRate();
@@ -869,7 +868,7 @@ contract YtLendingTest is Test {
lending.supplyCollateral(address(ytVault), 10e18); // $20,000
// 借款 $16,000（正好 80%）
lending.borrow(16000e6);
lending.withdraw(16000e6);
// 应该成功
assertEq(lending.borrowBalanceOf(alice), 16000e6, "Should borrow at max LTV");
@@ -887,7 +886,7 @@ contract YtLendingTest is Test {
// 尝试借 $16,001（超过 80%）
vm.expectRevert(ILending.InsufficientCollateral.selector);
lending.borrow(16001e6);
lending.withdraw(16001e6);
vm.stopPrank();
}
@@ -899,7 +898,7 @@ contract YtLendingTest is Test {
// Alice 借款后尝试取出抵押品
vm.startPrank(alice);
lending.supplyCollateral(address(ytVault), 10e18);
lending.borrow(16000e6);
lending.withdraw(16000e6);
// 尝试取出 1 YTToken 会破坏抵押率
vm.expectRevert(ILending.InsufficientCollateral.selector);
@@ -929,13 +928,13 @@ contract YtLendingTest is Test {
// 2. Bob 抵押借款
vm.startPrank(bob);
lending.supplyCollateral(address(ytVault), 20e18); // $40,000
lending.borrow(30000e6); // 75% LTV
lending.withdraw(30000e6); // 75% LTV
vm.stopPrank();
// 3. Charlie 也抵押借款（更激进，容易被清算）
vm.startPrank(charlie);
lending.supplyCollateral(address(ytVault), 5e18); // $10,000
lending.borrow(7900e6); // 79% LTV
lending.withdraw(7900e6); // 79% LTV
vm.stopPrank();
// 4. 时间流逝，利息累积