there's some quite in-depth discussion of this in chapters 23 and 25. http://www.obeythetestinggoat.com/book/chapter_purist_unit_tests.html http://www.obeythet

there's some quite in-depth discussion of this in chapters 23 and 25. http://www.obeythetestinggoat.com/book/chapter_purist_unit_tests.html http://www.obeythetestinggoat.com/book/chapter_purist_unit_t... http://www.obeythetestinggoat.com/book/chapter_hot_lava.html http://www.obeythetestinggoat.com/book/chapter_hot_lava.html