test: add constructor test in batch and factory

test/integration/batch-lockup/constructor/constructor.t.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity >=0.8.22 <0.9.0;
+
+import { SablierV2BatchLockup } from "src/SablierV2BatchLockup.sol";
+
+import { Integration_Test } from "../../Integration.t.sol";
+
+contract Constructor_BatchLockup_Integration_Test is Integration_Test {
+    function setUp() public virtual override {
+        Integration_Test.setUp();
+    }
+
+    function test_Constructor() external {
+        vm.expectEmit();
+        emit TransferAdmin({ oldAdmin: address(0), newAdmin: users.admin });
+        SablierV2BatchLockup batchLockup = new SablierV2BatchLockup(users.admin);
+
+        address actualAdmin = batchLockup.admin();
+        address expectedAdmin = users.admin;
+        assertEq(actualAdmin, expectedAdmin, "admin mismatch");
+    }
+}

test/integration/merkle-lockup/factory/constructor/constructor.t.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity >=0.8.22 <0.9.0;
+
+import { SablierV2MerkleLockupFactory } from "src/SablierV2MerkleLockupFactory.sol";
+
+import { MerkleLockup_Integration_Test } from "../../MerkleLockup.t.sol";
+
+contract Constructor_BatchLockup_Integration_Test is MerkleLockup_Integration_Test {
+    function setUp() public virtual override {
+        MerkleLockup_Integration_Test.setUp();
+    }
+
+    function test_Constructor() external {
+        vm.expectEmit();
+        emit TransferAdmin({ oldAdmin: address(0), newAdmin: users.admin });
+        SablierV2MerkleLockupFactory merkleLockupFactory = new SablierV2MerkleLockupFactory(users.admin);
+
+        address actualAdmin = merkleLockupFactory.admin();
+        address expectedAdmin = users.admin;
+        assertEq(actualAdmin, expectedAdmin, "admin mismatch");
+    }
+}

test/utils/Events.sol

@@ -30,4 +30,5 @@ abstract contract Events {
         uint256 aggregateAmount,
         uint256 recipientCount
     );
+    event TransferAdmin(address indexed oldAdmin, address indexed newAdmin);
 }