code: def test_fdr_neg():
      # test without some significant values
      np.random.seed([1])
      x = np.random.rand(100) * 0.8 + 0.2
      q = fdr(x)
      assert (q > 0.05).all()
      pc = fdr_threshold(x)
      assert pc == 0.05 / 100
  
file_path: nipy/nipy/algorithms/statistics/tests/test_empirical_pvalue.py
imports: import numpy
  from ..empirical_pvalue import NormalEmpiricalNull, fdr, fdr_threshold, gaussian_fdr, gaussian_fdr_threshold, smoothed_histogram_from_samples
label_desc: Use image node_id 4 for calling a global function with example usage: test_fdr_neg() without return types