Off the top of my head David Millar, Maco Pantani, Jan Ulrich all tested postive during his 7 tour wins, but in an effort to provide more evidence I looked up doping cases in cycling. Seriously if you believe cyclists weren't tested, look it up. 10 - 20 a year were testing positive and/or being banned from '99 on (Armstrong's first win), including Armstrong himself in '99.