nomos-pocs/da/kzg_rs/test_fft.py

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from unittest import TestCase
from .roots import compute_roots_of_unity
from .common import BLS_MODULUS
from .fft import fft, ifft
class TestFFT(TestCase):
def test_fft_ifft(self):
for size in [16, 32, 64, 128, 256, 512, 1024, 2048, 4096]:
roots_of_unity = compute_roots_of_unity(2, size, BLS_MODULUS)
vals = list(x for x in range(size))
vals_fft = fft(vals, roots_of_unity, BLS_MODULUS)
self.assertEqual(vals, ifft(vals_fft, roots_of_unity, BLS_MODULUS))