The PR refactors tests:
- change two lines `require.Error + require.Contains` with one
`require.ErrorContains`;
- change `require.Error + require.Equal` with `require.EqualError`.
basically redoing #3559 as it got impossible to merge with the many
changes since it was open (which is totally my fault for not merging it
earlier).
Anyhow, still a WIP, going also doing some other related improvements in
the way.
cc/ @graytonio
closes#3559closes#3525
---------
Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>
Co-authored-by: Grayton Ward <graytonio.ward@gmail.com>
