At my last company, we gave a toy test outside the codebase for code production skills (basically a skeleton and some unit test to make green) and a simple task

At my last company, we gave a toy test outside the codebase for code production skills (basically a skeleton and some unit test to make green) and a simple task (changing a color, swapping an icon etc.) inside the production code for the navigation and orientation skills. A secondary target was that the candidate had seen the real production code in the real IDE, with a future co-worker next to him before accepting the job. We would hog the candidate's time for half a day, but it was not half a day of production for us, it was also a lengthy team lunch at a restaurant, and a lot of talk.