mirror of
https://github.com/cdtools-developers/cdtools.git
synced 2026-09-09 21:12:42 +02:00
265 lines
9.1 KiB
Python
265 lines
9.1 KiB
Python
from __future__ import division, print_function, absolute_import
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from CDTools.tools import data
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import numpy as np
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import torch as t
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import h5py
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import pytest
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import os
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import datetime
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import numbers
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from pathlib import Path
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#
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# We start with a bunch of tests of the data loading capabilities
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#
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def test_get_entry_info(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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entry_info = data.get_entry_info(cxi)
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for key in expected['entry metadata']:
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assert entry_info[key] == expected['entry metadata'][key]
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def test_get_sample_info(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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sample_info = data.get_sample_info(cxi)
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if sample_info is None and \
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('sample info' not in expected or
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expected['sample info'] is None):
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# Valid if no sample info is defined at all
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continue
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for key in expected['sample info']:
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if isinstance(expected['sample info'][key],np.ndarray):
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assert np.allclose(sample_info[key],
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expected['sample info'][key])
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else:
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assert sample_info[key] == expected['sample info'][key]
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def test_get_wavelength(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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assert np.isclose(expected['wavelength'],data.get_wavelength(cxi))
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def test_get_detector_geometry(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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distance, basis, corner = data.get_detector_geometry(cxi)
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assert np.isclose(distance,expected['detector']['distance'])
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assert np.allclose(basis,expected['detector']['basis'])
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if isinstance(expected['detector']['corner'], np.ndarray):
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assert np.allclose(corner, expected['detector']['corner'])
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else:
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assert corner == expected['detector']['corner']
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def test_get_mask(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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mask = data.get_mask(cxi)
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if expected['mask'] is None and mask is None:
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continue
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assert np.all(data.get_mask(cxi) == expected['mask'])
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def test_get_dark(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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dark = data.get_dark(cxi)
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if dark is None:
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assert expected['dark'] is None
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else:
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assert np.allclose(dark, expected['dark'])
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def test_get_data(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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patterns, axes = data.get_data(cxi)
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assert np.allclose(patterns, expected['data'])
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assert axes == expected['axes']
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def test_get_ptycho_translations(test_ptycho_cxis):
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for cxi, expected in test_ptycho_cxis:
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assert np.allclose(data.get_ptycho_translations(cxi),
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expected['translations'])
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#
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# Then, write a test for the data saving. It should create a .cxi file
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# using the data seving tools, and then check that when read with the
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# .cxi reading tools that it gets the same things that were written.
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#
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def test_create_cxi(tmp_path):
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data.create_cxi(tmp_path / 'test_create.cxi')
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with h5py.File(tmp_path / 'test_create.cxi') as f:
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assert f['cxi_version'][()] == 160
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assert 'entry_1' in f
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def test_add_entry_info(tmp_path):
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entry_info = {'experiment_identifier':'test of cxi file writing tools',
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'title': 'my cool experiment',
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'start_time': datetime.datetime.now(),
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'end_time': datetime.datetime.now()}
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with data.create_cxi(tmp_path / 'test_add_entry_info.cxi') as f:
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data.add_entry_info(f, entry_info)
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with h5py.File(tmp_path / 'test_add_entry_info.cxi') as f:
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read_entry_info = data.get_entry_info(f)
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for key in entry_info:
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if isinstance(entry_info[key], np.ndarray):
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assert np.allclose(entry_info[key], read_entry_info[key])
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else:
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assert entry_info[key] == read_entry_info[key]
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def test_add_sample_info(tmp_path):
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sample_info = {'name':'A nice fake sample',
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'concentration': 10,
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'mass': 5.3,
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'temperature': 76,
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'description': 'A very nice sample',
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'unit_cell': np.array([1,1,1,90.,90.,90.])}
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with data.create_cxi(tmp_path / 'test_add_sample_info.cxi') as f:
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data.add_sample_info(f, sample_info)
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with h5py.File(tmp_path / 'test_add_sample_info.cxi') as f:
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read_sample_info = data.get_sample_info(f)
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for key in sample_info:
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if isinstance(sample_info[key], np.ndarray):
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assert np.allclose(sample_info[key], read_sample_info[key])
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elif isinstance(sample_info[key], numbers.Number):
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assert np.isclose(sample_info[key], read_sample_info[key])
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else:
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assert sample_info[key] == read_sample_info[key]
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def test_add_source(tmp_path):
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wavelength = 1e-9
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energy = 1.9864459e-25 / wavelength
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with data.create_cxi(tmp_path / 'test_add_source.cxi') as f:
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data.add_source(f, wavelength)
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with h5py.File(tmp_path / 'test_add_source.cxi') as f:
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# Check this directly since we want to make sure it saved
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# the wavelength and energy
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read_wavelength = f['entry_1/instrument_1/source_1/wavelength'][()]
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read_energy = f['entry_1/instrument_1/source_1/energy'][()]
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assert np.isclose( wavelength, read_wavelength)
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assert np.isclose( energy, read_energy)
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def test_add_detector(tmp_path):
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distance = 0.34
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basis = np.array([[0,-30e-6,0],
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[-20e-6,0,0]]).astype(np.float32).transpose()
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corner = np.array((2550e-6,3825e-6,0.3)).astype(np.float32)
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with data.create_cxi(tmp_path / 'test_add_detector.cxi') as f:
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data.add_detector(f, distance, basis, corner=corner)
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with h5py.File(tmp_path / 'test_add_detector.cxi') as f:
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# Check this directly since we want to make sure it saved
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# the pixel sizes
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d1 = f['entry_1/instrument_1/detector_1']
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read_basis = np.array(d1['basis_vectors'])
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read_x_pix = np.float32(d1['x_pixel_size'])
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read_y_pix = np.float32(d1['y_pixel_size'])
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read_distance = np.float32(d1['distance'])
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read_corner = np.array(d1['corner_position'])
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assert np.isclose(distance, read_distance)
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assert np.allclose(basis, read_basis)
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assert np.isclose(np.linalg.norm(basis[:,1]), read_x_pix)
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assert np.isclose(np.linalg.norm(basis[:,0]), read_y_pix)
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assert np.allclose(corner,read_corner)
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def test_add_mask(tmp_path):
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mask = (np.random.rand(350,600) > 0.1).astype(np.uint8)
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with data.create_cxi(tmp_path / 'test_add_mask.cxi') as f:
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data.add_mask(f, mask)
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with h5py.File(tmp_path / 'test_add_mask.cxi') as f:
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read_mask = data.get_mask(f)
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assert np.all(mask == read_mask)
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def test_add_dark(tmp_path):
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dark = np.random.rand(350,620)
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with data.create_cxi(tmp_path / 'test_add_dark.cxi') as f:
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data.add_dark(f, dark)
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with h5py.File(tmp_path / 'test_add_dark.cxi') as f:
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read_dark = data.get_dark(f)
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print(dark.shape)
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assert np.allclose(dark, read_dark)
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def test_add_data(tmp_path):
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# First test from numpy, with axes
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fake_data = np.random.rand(100,256,256)
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axes = ['translation','y','x']
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with data.create_cxi(tmp_path / 'test_add_data.cxi') as f:
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data.add_data(f, fake_data, axes)
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with h5py.File(tmp_path / 'test_add_data.cxi') as f:
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# Check this directly since we want to make sure it saved
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# it in all the places it should have
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read_data_1 = np.array(f['entry_1/data_1/data'])
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read_data_2 = np.array(f['entry_1/instrument_1/detector_1/data'])
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read_axes = str(f['entry_1/instrument_1/detector_1/data'].attrs['axes'].decode())
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assert np.allclose(fake_data, read_data_1)
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assert np.allclose(fake_data, read_data_2)
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assert 'translation:y:x' == read_axes
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# Then test from torch, without axes
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fake_data = t.from_numpy(fake_data)
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with data.create_cxi(tmp_path / 'test_add_data_torch.cxi') as f:
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data.add_data(f, fake_data)
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with h5py.File(tmp_path / 'test_add_data_torch.cxi') as f:
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read_data, axes = data.get_data(f)
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assert np.allclose(fake_data.numpy(),read_data)
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def test_add_ptycho_translations(tmp_path):
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translations = np.random.rand(3,100)
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with data.create_cxi(tmp_path / 'test_add_ptycho_translations.cxi') as f:
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data.add_ptycho_translations(f, translations)
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with h5py.File(tmp_path / 'test_add_ptycho_translations.cxi') as f:
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# Check this directly since we want to make sure it saved
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# it in all the places it should have
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read_translations_1 = np.array(f['entry_1/data_1/translation'])
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read_translations_2 = np.array(f['entry_1/instrument_1/detector_1/translation'])
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read_translations_3 = np.array(f['entry_1/sample_1/geometry_1/translation'])
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assert np.allclose(-translations, read_translations_1)
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assert np.allclose(-translations, read_translations_2)
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assert np.allclose(-translations, read_translations_3)
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