Migration contracts & migration tests

script/Deployer.sol

@@ -32,6 +32,9 @@ contract Deployer is Script {
     PauseAdmin public pauseAdmin;
     DelayedAdmin public delayedAdmin;
     Gateway public gateway;
+    address public liquidityPoolFactory;
+    address public restrictionManagerFactory;
+    address public trancheTokenFactory;
 
     function deployInvestmentManager(address deployer) public {
         // If no salt is provided, a pseudo-random salt is generated,
@@ -45,9 +48,9 @@ contract Deployer is Script {
 
         investmentManager = new InvestmentManager(address(escrow), address(userEscrow));
 
-        address liquidityPoolFactory = address(new LiquidityPoolFactory(address(root)));
-        address restrictionManagerFactory = address(new RestrictionManagerFactory(address(root)));
-        address trancheTokenFactory = address(new TrancheTokenFactory{salt: salt}(address(root), deployer));
+        liquidityPoolFactory = address(new LiquidityPoolFactory(address(root)));
+        restrictionManagerFactory = address(new RestrictionManagerFactory(address(root)));
+        trancheTokenFactory = address(new TrancheTokenFactory{salt: salt}(address(root), deployer));
         investmentManager = new InvestmentManager(address(escrow), address(userEscrow));
         poolManager =
             new PoolManager(address(escrow), liquidityPoolFactory, restrictionManagerFactory, trancheTokenFactory);

src/PoolManager.sol

@@ -397,6 +397,18 @@ contract PoolManager is Auth {
     }
 
     // --- Helpers ---
+    function getUndeployedTranche(uint64 poolId, bytes16 trancheId)
+        public
+        view
+        returns (uint8 decimals, string memory tokenName, string memory tokenSymbol)
+    {
+        UndeployedTranche storage tranche = undeployedTranches[poolId][trancheId];
+        uint8 decimals = tranche.decimals;
+        string memory tokenName = tranche.tokenName;
+        string memory tokenSymbol = tranche.tokenSymbol;
+        return (decimals, tokenName, tokenSymbol);
+    }
+
     function getTrancheToken(uint64 poolId, bytes16 trancheId) public view returns (address) {
         Tranche storage tranche = pools[poolId].tranches[trancheId];
         return tranche.token;