It depends what is or isn't broken. the fibula (outside) is nearly non-weight bearing so if it is not displaced you can probably walk on it and a bump test will hurt but maybe not as much. I do compression tests in multiple spots along with lower leg.. even a sprain will sometimes hurt right around the injured area.. but if it hurts down lower when i'm squeezing up higher then that is a + test for me.
they are tests.. not xrays.. so there is margin for error, pain tolerance, adrenaline etc just because the test is negative doesn't rule out anything for sure. I had a football player still play 2+ weeks with a broken collarbone that never came to me. I had a kid break his tibia and have no real pain at all and - compression test and when i picked up his leg to do an ACL test you could see bump where one shouldn't be
tests are only part of an eval. HOPS.. history (what happened) Observation(anything look funny?), Palpation (*poke poke* that hurt?), Special tests.. Sometimes you don't need to go through everything to have enough flags to decide to pack and ship them.
ELM your turn