def test_add_smaller_solution_with_same_fitness(self):
size = 1
pool = BestSolutionArchiver()
pool.add(SOLUTIONS[1][0], SOLUTIONS[1][1], size)
pool.add(SOLUTIONS[0][0], SOLUTIONS[0][1], size)
self.assertEqual(pool.length(), 1, msg="Pool must keep one solution (length=%s)" % pool.length())
solution = set(SOLUTIONS[0][0])
fitness = SOLUTIONS[0][1]
sol = pool.get(0)
self.assertEqual(sol.candidate, solution, msg="Best solution must be the first (%s)" % sol.candidate)
self.assertEqual(sol.fitness, fitness, msg="Best fitness must be the first (%s)" % sol.fitness)
