Docs say "As expected, the tests fail" but then continues with "Test Passed"

[st--]

See at the end of https://rafaqz.github.io/Interfaces.jl/dev/basic/#Implementation

• The Chicken test does not actually throw an exception that gets printed (no idea what's going on there)
• The final tests (that demonstrate functionality of the Interfaces package) should be in a separate code block (with separate explanation), so that their (intended) successful passing doesn't confuse the Chicken example above