old_contents: import unittest
  import pandas as pd
  from banpei.sst import SST
  
  
  class TestSST(unittest.TestCase):
  
      def setUp(self):
          self.raw_data = pd.read_csv('tests/test_data/periodic_wave.csv')
          self.data = self.raw_data['y']
  
      def test_detect(self):
          model = SST(w=50)
          results = model.detect(self.data)
          self.assertEqual(len(self.data), len(results))
  
      def test_stream_detect(self):
          model = SST(w=50)
          result = model.stream_detect(self.data)
          self.assertIsInstance(result, float)
  
  
  if __name__ == "__main__":
      unittest.main()
  
new_contents: import unittest
  import pandas as pd
  from banpei.sst import SST
  
  
  class TestSST(unittest.TestCase):
  
      def setUp(self):
          self.raw_data = pd.read_csv('tests/test_data/periodic_wave.csv')
          self.data = self.raw_data['y']
  
      def test_detect_by_svd(self):
          model = SST(w=50)
          results = model.detect(self.data)
          self.assertEqual(len(self.data), len(results))
  
      def test_detect_by_lanczos(self):
          model = SST(w=50)
          results = model.detect(self.data, is_lanczos=True)
          self.assertEqual(len(self.data), len(results))
  
      def test_stream_detect(self):
          model = SST(w=50)
          result = model.stream_detect(self.data)
          self.assertIsInstance(result, float)
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: Add test of detection using lanczos method