Added unit tests for Router contract

test/RouterTest.sol

@@ -0,0 +1,27 @@
+pragma solidity ^0.8.20;
+
+import "truffle/Assert.sol";
+import "truffle/DeployedAddresses.sol";
+import "../contracts/Router.sol";
+import "../contracts/lib/MultiSendCallOnly.sol";
+
+contract RouterTest {
+    Router router = Router(DeployedAddresses.Router());
+
+    function testOwnerCanCall() public {
+        bool r = router.updatePluginLogic(DeployedAddresses.Router());
+        Assert.equal(r, true, "Owner should be able to call");
+    }
+
+    function testNonOwnerCannotCall() public {
+        (bool r, ) = address(router).call(abi.encodePacked(router.updatePluginLogic.selector, DeployedAddresses.Router()));
+        Assert.equal(r, false, "Non-owner should not be able to call");
+    }
+
+    function testMultiSendWithLargeTransactionBundles() public {
+        bytes memory transactions = new bytes(10000);
+        bool r = router.multiSend(transactions);
+        Assert.equal(r, true, "Should be able to handle large transaction bundles");
+    }
+}
+