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#!/usr/bin/env python3
#
# Copyright 2020 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
"""
Unit tests for fft.window
"""
import numpy
from gnuradio import gr_unittest
from gnuradio import fft
class test_window(gr_unittest.TestCase):
"""
Unit tests for fft.window
"""
def setUp(self):
pass
def tearDown(self):
pass
def test_normwin(self):
"""
Verify window normalization
"""
win = fft.window.build(fft.win_type.WIN_BLACKMAN_hARRIS, 21, normalize=True)
power = numpy.sum([x*x for x in win])/len(win)
self.assertAlmostEqual(power, 1.0)
if __name__ == '__main__':
gr_unittest.run(test_window)
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