code: def test_balls_zero():
      f = noise_generation.randomly_distribute_N_balls_into_K_bins
      K = 3
      result = f(N=0, K=K)
      assert len(result) == K
      assert sum(result) == 0
  
imports: import numpy
  from cleanlab.benchmarking import noise_generation
  import pytest
label_desc: Use image node_id 21 for calling a global function with example usage: test_balls_zero() without return types