29 lines
888 B
Python
29 lines
888 B
Python
import pytest
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from pathlib import Path
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import numpy as np
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from numpy.testing import assert_allclose
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from optifik.fft import thickness_from_fft
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from optifik.analysis import smooth_intensities
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from optifik.io import load_spectrum
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@pytest.fixture
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def test_data_dir():
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return Path(__file__).parent.parent / 'data'
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def test_FFT(test_data_dir):
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spectrum_path = test_data_dir / 'basic' / '003582.xy'
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expected = 3524.51
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lambdas, raw_intensities = load_spectrum(spectrum_path, wavelength_min=450)
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smoothed_intensities = smooth_intensities(raw_intensities)
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r_index = 1.324188 + 3102.060378 / (lambdas**2)
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thickness_FFT = thickness_from_fft(lambdas,
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smoothed_intensities,
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refractive_index=r_index)
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result = thickness_FFT.thickness
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assert_allclose(result, expected, rtol=1e-1)
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