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import os
import pytest
import numpy as np
from pynpoint.core.pypeline import Pypeline
from pynpoint.readwrite.fitsreading import FitsReadingModule
from pynpoint.readwrite.fitswriting import FitsWritingModule
from pynpoint.util.tests import create_config, create_star_data, remove_test_data
class TestFitsWriting:
def setup_class(self) -> None:
self.limit = 1e-10
self.test_dir = os.path.dirname(__file__) + '/'
create_star_data(self.test_dir+'fits_data')
create_config(self.test_dir+'PynPoint_config.ini')
self.pipeline = Pypeline(self.test_dir, self.test_dir, self.test_dir)
def teardown_class(self) -> None:
remove_test_data(self.test_dir, folders=['fits_data'], files=['test.fits'])
def test_fits_reading(self) -> None:
module = FitsReadingModule(name_in='read',
input_dir=self.test_dir+'fits_data',
image_tag='images',
overwrite=True,
check=True)
self.pipeline.add_module(module)
self.pipeline.run_module('read')
data = self.pipeline.get_data('images')
assert np.sum(data) == pytest.approx(105.54278879805277, rel=self.limit, abs=0.)
assert data.shape == (10, 11, 11)
def test_fits_writing(self) -> None:
module = FitsWritingModule(file_name='test.fits',
name_in='write1',
output_dir=None,
data_tag='images',
data_range=None,
overwrite=True)
self.pipeline.add_module(module)
self.pipeline.run_module('write1')
def test_filename_extension(self) -> None:
with pytest.raises(ValueError) as error:
FitsWritingModule(file_name='test.dat',
name_in='write3',
output_dir=None,
data_tag='images',
data_range=None,
overwrite=True,
subset_size=None)
assert str(error.value) == 'Output \'file_name\' requires the FITS extension.'
def test_data_range(self) -> None:
module = FitsWritingModule(file_name='test.fits',
name_in='write4',
output_dir=None,
data_tag='images',
data_range=(0, 10),
overwrite=True,
subset_size=None)
self.pipeline.add_module(module)
self.pipeline.run_module('write4')
def test_not_overwritten(self) -> None:
module = FitsWritingModule(file_name='test.fits',
name_in='write5',
output_dir=None,
data_tag='images',
data_range=None,
overwrite=False,
subset_size=None)
self.pipeline.add_module(module)
with pytest.warns(UserWarning) as warning:
self.pipeline.run_module('write5')
assert len(warning) == 1
assert warning[0].message.args[0] == 'Filename already present. Use overwrite=True ' \
'to overwrite an existing FITS file.'
def test_subset_size(self) -> None:
module = FitsWritingModule(file_name='test.fits',
name_in='write6',
output_dir=None,
data_tag='images',
data_range=None,
overwrite=True,
subset_size=10)
self.pipeline.add_module(module)
self.pipeline.run_module('write6')
def test_subset_size_data_range(self) -> None:
module = FitsWritingModule(file_name='test.fits',
name_in='write7',
output_dir=None,
data_tag='images',
data_range=(8, 18),
overwrite=True,
subset_size=10)
self.pipeline.add_module(module)
self.pipeline.run_module('write7')
def test_attribute_length(self) -> None:
text = 'long_text_long_text_long_text_long_text_long_text_long_text_long_text_long_text'
self.pipeline.set_attribute('images', 'short', 'value', static=True)
self.pipeline.set_attribute('images', 'longer_than_eight1', 'value', static=True)
self.pipeline.set_attribute('images', 'longer_than_eight2', text, static=True)
module = FitsWritingModule(file_name='test.fits',
name_in='write8',
output_dir=None,
data_tag='images',
data_range=None,
overwrite=True,
subset_size=None)
self.pipeline.add_module(module)
with pytest.warns(UserWarning) as warning:
self.pipeline.run_module('write8')
assert len(warning) == 1
assert warning[0].message.args[0] == 'Key \'hierarch longer_than_eight2\' with value ' \
'\'long_text_long_text_long_text_long_text_long_' \
'text_long_text_long_text_long_text\' is too ' \
'long for the FITS format. To avoid an error, ' \
'the value was truncated to \'long_text_long_text' \
'_long_text_long_text_long_tex\'.'
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