I have a system under test which is simulating elevators. I am testing whether the elevator arrives at a particular floor. This is the code of my test:
int chosenFloor=r.nextInt(6)+6;
lc.moveLift(0, chosenFloor); //moving lift 0 to the chosen floor
open=false;
floor=chosenFloor;
moving=false;
assertEquals(floor, lc.getLifts()[0].getFloor());
Now the method moveLift calls this piece of code:
lift.setMoving(true);
int fromFloor = lift.getFloor();
setLiftFloor(fromFloor);
lift.setMoving(true);
if (toFloor > fromFloor) {
for (int i = fromFloor; i < toFloor; i++) {
animateUp(i);
lift.setFloor(i);
}
} else {
for (int i = fromFloor; i > toFloor; i--) {
animateDown(i);
lift.setFloor(i);
}
}
And animateUp calls this method:
int lower = currentFloor * animationStepsPerFloor;
int upper = lower + animationStepsPerFloor - 1;
for (int i = 0; i < animationStepsPerFloor; i++) {
try {
Thread.sleep(50);
} catch (Exception e) {
e.printStackTrace();
}
lower++;
upper++;}
So as you can see, time plays an important factor. Right now, with my current test, the lift does not move. It is obvious that I have to wait for the lift to move, how can I do it in a test case. I have tried placing Thread.sleep in my test case, but it's futile.
It is obvious that I have to wait for the lift to move, how can I do it in a test case. I have tried placing Thread.sleep in my test case, but it's futile.
Typically when I am doing unit tests on things that have subtle timing race conditions I use a timeout
on the entire method and then I have a spin loop waiting for the condition to occur.
@Test(timeout = 10000)
public void testSomeTimingIssue() throws Exception {
while (!elevatorMoved) {
// test elevator
Thread.sleep(50);
}
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.