Deployment preparation: V3 Routers

src/helpers/constants.ts

@@ -7,6 +7,7 @@ export const MAX_UINT96: BigNumber = maxUint(96);
 export const MAX_UINT10: BigNumber = maxUint(10);
 export const MAX_UINT31: BigNumber = maxUint(31);
 export const MAX_UINT32: BigNumber = maxUint(32);
+export const MAX_UINT48: BigNumber = maxUint(48);
 export const MAX_UINT64: BigNumber = maxUint(64);
 
 export const MIN_INT22: BigNumber = minInt(22);

v3/tasks/20241205-v3-batch-router/readme.md

@@ -1,4 +1,4 @@
-# V3 Batch Router
+# 2024-12-05 - V3 Batch Router
 
 Batch Router deployment for V3.
 Contains `BatchRouter` for complex multi-hop swaps (supports single token add / remove types and buffer wrap / unwrap).

v3/tasks/20241205-v3-buffer-router/readme.md

@@ -1,4 +1,4 @@
-# V3 Buffer Router
+# 2024-12-05 - V3 Buffer Router
 
 Buffer Router deployment for V3.
 Contains `BufferRouter` to initialize and manage liquidity positions for buffers.

v3/tasks/20241205-v3-buffer-router/test/task.fork.ts

@@ -3,14 +3,20 @@
 import { describeForkTest, getForkedNetwork, getSigner, impersonate, Task, TaskMode } from '@src';
 import { Contract } from 'ethers';
 import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers';
+import { MAX_UINT48 } from '@helpers/constants';
 import { fp } from '@helpers/numbers';
+import input, { BufferRouterDeployment } from '../input';
 
 describeForkTest('BufferRouter-V3', 'mainnet', 21336200, function () {
   let task: Task;
-  let bufferRouter: Contract;
-  let wethSigner: SignerWithAddress, alice: SignerWithAddress;
+  let bufferRouter: Contract, vault: Contract, permit2: Contract, usdc: Contract;
+  let wethSigner: SignerWithAddress, alice: SignerWithAddress, usdcWhale: SignerWithAddress;
 
   const WETH_ADDRESS = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2';
+  const waUSDC_ADDRESS = '0x73edDFa87C71ADdC275c2b9890f5c3a8480bC9E6';
+  const USDC_ADDRESS = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
+
+  const USDC_WHALE = '0x4B16c5dE96EB2117bBE5fd171E4d203624B014aa';
 
   const versionNumber = 1;
   const deploymentId = '20241205-v3-buffer-router';
@@ -19,12 +25,20 @@
     task = new Task(deploymentId, TaskMode.TEST, getForkedNetwork(hre));
     await task.run({ force: true });
 
+    const input = task.input() as BufferRouterDeployment;
+
     bufferRouter = await task.deployedInstance('BufferRouter');
+    permit2 = await task.instanceAt('IPermit2', input.Permit2);
 
     const testBALTokenTask = new Task('20220325-test-balancer-token', TaskMode.READ_ONLY, getForkedNetwork(hre));
     const WETH = await testBALTokenTask.instanceAt('TestBalancerToken', WETH_ADDRESS);
     wethSigner = await impersonate(WETH.address, fp(10e8));
     alice = await getSigner();
+    usdcWhale = await impersonate(USDC_WHALE, fp(10));
+
+    const vaultTask = new Task('20241204-v3-vault', TaskMode.READ_ONLY, getForkedNetwork(hre));
+    vault = await vaultTask.deployedInstance('Vault');
+    usdc = await testBALTokenTask.instanceAt('TestBalancerToken', USDC_ADDRESS);
   });
 
   it('checks buffer router version', async () => {
@@ -47,4 +61,21 @@
     });
     await expect(aliceTx).to.be.reverted;
   });
+
+  it('tests buffer initialization', async () => {
+    const initBalance = 1000000e6;
+    await usdc.connect(usdcWhale).approve(permit2.address, initBalance);
+    await permit2.connect(usdcWhale).approve(USDC_ADDRESS, bufferRouter.address, initBalance, MAX_UINT48);
+
+    // We need to call methods that don't exist in the vault.
+    const abi = [
+      'function isERC4626BufferInitialized(address) external view returns (bool)',
+      'function getERC4626BufferAsset(address) external view returns (address)',
+    ];
+    const vaultAsExtension = new ethers.Contract(vault.address, abi, usdcWhale);
+
+    await bufferRouter.connect(usdcWhale).initializeBuffer(waUSDC_ADDRESS, 1000000e6, 0, 0);
+    expect(await vaultAsExtension.isERC4626BufferInitialized(waUSDC_ADDRESS)).to.be.true;
+    expect(await vaultAsExtension.getERC4626BufferAsset(waUSDC_ADDRESS)).to.be.eq(USDC_ADDRESS);
+  });
 });

v3/tasks/20241205-v3-composite-liquidity-router/readme.md

@@ -1,4 +1,4 @@
-# V3 Composite Liquidity Router
+# 2024-12-05 - V3 Composite Liquidity Router
 
 Composite Liquidity Router deployment for V3.
 Contains `CompositeLiquidityRouter` for complex liquidity operations involving pools with ERC4626 wrappers and nested pools.

v3/tasks/20241205-v3-router/readme.md

@@ -1,4 +1,4 @@
-# V3 Router
+# 2024-12-05 - V3 Router
 
 Base Router deployment for V3.
 Contains `Router` for basic, single step operations (e.g., pool initialization, add, remove, swap).