Set up the V3Factory owner contract & test harness

src/V3FactoryOwner.sol

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+// SPDX-License-Identifier: AGPL-3.0-only
+pragma solidity 0.8.23;
+
+contract V3FactoryOwner {
+    address public admin;
+
+    constructor(address _admin) {
+        admin = _admin;
+    }
+}

test/V3FactoryOwner.t.sol

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+// SPDX-License-Identifier: AGPL-3.0-only
+pragma solidity 0.8.23;
+
+import {Test, console2} from "forge-std/Test.sol";
+import {V3FactoryOwner} from "src/V3FactoryOwner.sol";
+
+contract V3FactoryOwnerTest is Test {
+    V3FactoryOwner factoryOwner;
+    address admin = address(0xb055beef);
+
+    function setUp() public {
+        vm.label(admin, "Admin");
+
+        factoryOwner = new V3FactoryOwner(admin);
+        vm.label(address(factoryOwner), "Factory Owner");
+    }
+}
+
+contract Constructor is V3FactoryOwnerTest {
+    function test_SetsTheAdmin() public {
+        assertEq(factoryOwner.admin(), admin);
+    }
+
+    function testFuzz_SetTheAdminToAnArbitraryAddress(address _admin) public {
+        V3FactoryOwner _factoryOwner = new V3FactoryOwner(_admin);
+        assertEq(_factoryOwner.admin(), _admin);
+    }
+}