Testing these in an integration test
is probably the most useful,
as they're mainly wrappers for other logic.

Also, remove an isset() check
as empty() will handle that case.

To indicate that the helpers.php functions
are covered, like block_rows() and block_row().

Still, I need to add a lot of tests for this class,
and a few others.

This is passing it a row number,
so it should not use %s.