File size: 2,342 Bytes
7ffff7d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | # Licensed under a 3-clause BSD style license - see LICENSE.rst
import pytest
import numpy as np
from astropy.io import fits
try:
import matplotlib # pylint: disable=W0611
import matplotlib.image as mpimg
HAS_MATPLOTLIB = True
from astropy.visualization.scripts.fits2bitmap import fits2bitmap, main
except ImportError:
HAS_MATPLOTLIB = False
@pytest.mark.skipif('not HAS_MATPLOTLIB')
class TestFits2Bitmap:
def setup_class(self):
self.filename = 'test.fits'
self.array = np.arange(16384).reshape((128, 128))
def test_function(self, tmpdir):
filename = tmpdir.join(self.filename).strpath
fits.writeto(filename, self.array)
fits2bitmap(filename)
def test_script(self, tmpdir):
filename = tmpdir.join(self.filename).strpath
fits.writeto(filename, self.array)
main([filename, '-e', '0'])
def test_exten_num(self, tmpdir):
filename = tmpdir.join(self.filename).strpath
hdu1 = fits.PrimaryHDU()
hdu2 = fits.ImageHDU(self.array)
hdulist = fits.HDUList([hdu1, hdu2])
hdulist.writeto(filename)
main([filename, '-e', '1'])
def test_exten_name(self, tmpdir):
filename = tmpdir.join(self.filename).strpath
hdu1 = fits.PrimaryHDU()
extname = 'SCI'
hdu2 = fits.ImageHDU(self.array)
hdu2.header['EXTNAME'] = extname
hdulist = fits.HDUList([hdu1, hdu2])
hdulist.writeto(filename)
main([filename, '-e', extname])
@pytest.mark.parametrize('file_exten', ['.gz', '.bz2'])
def test_compressed_fits(self, tmpdir, file_exten):
filename = tmpdir.join('test.fits' + file_exten).strpath
fits.writeto(filename, self.array)
main([filename, '-e', '0'])
def test_orientation(self, tmpdir):
"""
Regression test to check the image vertical orientation/origin.
"""
filename = tmpdir.join(self.filename).strpath
out_filename = 'fits2bitmap_test.png'
out_filename = tmpdir.join(out_filename).strpath
data = np.zeros((32, 32))
data[0:16, :] = 1.
fits.writeto(filename, data)
main([filename, '-e', '0', '-o', out_filename])
img = mpimg.imread(out_filename)
assert img[0, 0, 0] == 0
assert img[31, 31, 0] == 1
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