new_contents: import unittest
  
  import cudf
  from cuml.cluster import DBSCAN
  
  from common import gpu_test
  
  
  class TestRapids(unittest.TestCase):
      def test_dbscan(self):
          # Create and populate a GPU DataFrame
          gdf_float = cudf.DataFrame()
          gdf_float['0'] = [1.0, 2.0, 5.0]
          gdf_float['1'] = [4.0, 2.0, 1.0]
          gdf_float['2'] = [4.0, 2.0, 1.0]
  
          # Setup and fit clusters
          dbscan_float = DBSCAN(eps=1.0, min_samples=1)
          dbscan_float.fit(gdf_float)
  
          self.assertEqual(3, dbscan_float.labels_.size)
  
subject: Add tests for cuml & cudf to prevent regresssion.