TDD is overrated. Code coverage is extremely overrated. Both of these tend to lead to a morass of tests that prove the compiler works at its most basic level while simultaneously generating a surplus of smugness about the whole situation.
Tests have their place. Tests can be, and often are, valuable. But the easier the test is to write, the easier it would've been to just encode it into the type system to begin with.
TDD is overrated. Code coverage is extremely overrated. Both of these tend to lead to a morass of tests that prove the compiler works at its most basic level while simultaneously generating a surplus of smugness about the whole situation.
Tests have their place. Tests can be, and often are, valuable. But the easier the test is to write, the easier it would've been to just encode it into the type system to begin with.