text: import unittest
  
  from cupy import testing
  
  
  @testing.parameterize(
      *testing.product({
          'm': [0, 1, -1, 1024],
          'name': ['blackman', 'hamming', 'hanning'],
      })
  )
  class TestWindow(unittest.TestCase):
  
      @testing.numpy_cupy_allclose(atol=1e-5)
      def test_window(self, xp):
          return getattr(xp, self.name)(self.m)
  
  
  @testing.parameterize(
      *testing.product({
          'm': [10, 30, 1024],
          'beta': [-3.4, 0, 5, 6, 8.6],
          'name': ['kaiser'],
      })
  )
  class TestKaiser(unittest.TestCase):
  
      @testing.numpy_cupy_allclose(atol=1e-5)
      def test_kaiser_parametric(self, xp):
          return getattr(xp, self.name)(self.m, self.beta)
  
  
  @testing.parameterize(*testing.product({'m': [-1, 0, 1]}))
  class TestKaiserBoundary(unittest.TestCase):
  
      @testing.numpy_cupy_allclose(atol=1e-5)
      def test_kaiser(self, xp):
          return xp.kaiser(self.m, 1.5)
  