For what it's worth, the conclusion that I've come to with respect to tests is: If a team has simple code, then tests can help a lot. However, if a team does n

For what it's worth, the conclusion that I've come to with respect to tests is: If a team has simple code, then tests can help a lot. However, if a team does not have simple code (and usually they don't) then it's better to spend time simplifying the code than writing tests.