WIP nonce

src/UniStaker.sol

@@ -598,6 +598,10 @@ contract UniStaker is INotifiableRewardReceiver, Multicall, EIP712, Nonces {
     emit RewardNotified(_amount, msg.sender);
   }
 
+  function invalidateNonce() external {
+  	_useNonce(msg.sender);
+  }
+
   /// @notice Internal method which finds the existing surrogate contract—or deploys a new one if
   /// none exists—for a given delegatee.
   /// @param _delegatee Account for which a surrogate is sought.

test/UniStaker.t.sol

@@ -2625,6 +2625,50 @@ contract SetAdmin is UniStakerTest {
   }
 }
 
+contract InvalidateNonce is UniStakerTest {
+   using stdStorage for StdStorage;
+
+  // Calll increments nonce
+  function testFuzz_SucessfullyInvalidateNonceForMsgSender(address _caller, uint256 _initialNonce) public {
+		  vm.assume(_caller != address(0));
+		  vm.assume(_initialNonce != type(uint256).max);
+
+		  // Set nonces in storage assert incremented by one
+          stdstore
+              .target(address(uniStaker))
+              .sig("nonces(address)")
+              .with_key(_caller)
+              .checked_write(_initialNonce);
+
+		  vm.prank(_caller);
+		  uniStaker.invalidateNonce();
+
+		  uint256 currentNonce = uniStaker.nonces(_caller);
+
+		  assertEq(currentNonce, _initialNonce + 1, "Current nonce is incorrect");
+  }
+
+  // Outside nonce owner cannot updateNonce
+  function testFuzz_NeedName(address _caller, address _nonceOwner, uint256 _initialNonce) public {
+		  vm.assume(_caller != address(0));
+		  vm.assume(_initialNonce != type(uint256).max);
+
+		  // Set nonces in storage assert incremented by one
+          stdstore
+              .target(address(uniStaker))
+              .sig("nonces(address)")
+              .with_key(_nonceOwner)
+              .checked_write(_initialNonce);
+
+		  vm.prank(_caller);
+		  uniStaker.invalidateNonce();
+  }
+
+  // It can be called multiple times
+  // It will invalidate StakeOnBehalf
+  // It will invalidate other stake on behalf methods
+}
+
 contract UniStakerRewardsTest is UniStakerTest {
   // Helper methods for dumping contract state related to rewards calculation for debugging
   function __dumpDebugGlobalRewards() public view {