Validate calldata is encoded properly in abi - encoding

Question

I have a solidity contract in which I would like to validate the calldata passed into it.
struct SwapResolverOptions {
bytes path;
uint256 deadline;
uint256 amountIn;
uint256 amountOutMinimum;
address inputTokenAddress;
address targetAddress;
address destinationAddress;
}
function validateAdditionalCalldata(bytes calldata resolverOptions) pure override external {
abi.decode(resolverOptions, (SwapResolverOptions));
}
I was under the impression that the abi.decode would throw an error if the calldata was wrong e.g incorrect length or incorrect data in the type. I wrote a test attempting to verify that:
const resolverOptions: SwapResolverOptionsStruct = {
path: '0x00',
deadline: BigNumber.from(1000),
amountIn: BigNumber.from(100000000),
amountOutMinimum: BigNumber.from(0),
inputTokenAddress: WMATIC_MUMBAI,
destinationAddress: owner.address,
targetAddress: ADDRESS_ZERO,
};
function encodeResolverOptions(resolverOptions: SwapResolverOptionsStruct): string {
return defaultAbiCoder.encode(
["(bytes path,uint256 deadline,uint256 amountIn,uint256 amountOutMinimum,address inputTokenAddress,address destinationAddress,address targetAddress)"],
[resolverOptions]
);
}
const encodedResolverOptions = encodeResolverOptions(resolverOptions);
console.log(encodedResolverOptions);
try {
const response = await swapResolver.validateAdditionalCalldata(encodedResolverOptions + 'AB');
console.log(response);
}
catch(err) {
console.log('Error:' + err);
}
I'm arbitrarily appending data to the calldata however no error is thrown? Note: I've also tried prepending the data (past the 0x)
How do I validate calldata matches the expected calldata in solidity?