  Detection of the fusion rule of Majorana zero-modes is a near-term milestone
on the road to topological quantum computation. An obstacle is that the
non-deterministic fusion outcome of topological zero-modes can be mimicked by
the merging of non-topological Andreev levels. To distinguish these two
scenarios, we search for dynamical signatures of the ground-state degeneracy
that is the defining property of non-Abelian anyons. By adiabatically
traversing parameter space along two different pathways one can identify
ground-state degeneracies from the breakdown of adiabaticity. We show that the
approach can discriminate against accidental degeneracies of Andreev levels.
