This issue is part of a series of issues intended to get the test coverage of core-utils up to 100%.

We use an address aliasing scheme to prevent certain attack vectors where a contract on L1 could impersonate a contract on L2 and vice versa. As part of this, we maintain utilities for clients to be able to compute the aliased version of a given contract address. The utilities can be found here. We're almost at 100% test coverage for this file but a few lines still need to be tested. You can find a coverage report for this file here.

The goal of this issue is to add tests that cover the lines not covered within the linked coverage report. Should be pretty straightforward!