Yeah: Google employees routinely leave patches for bugs in the PR queue because someone hasn't either update the existing tests (which clearly were adding negat

Yeah: Google employees routinely leave patches for bugs in the PR queue because someone hasn't either update the existing tests (which clearly were adding negative value if they fail on the fixed code) or write new regression tests, as if "the code is already known to be wrong shouldn't trump "maybe someone in the future will break it again".