| |
|
|
| import pytest |
| import numpy as np |
|
|
| from astropy.io import fits |
|
|
| try: |
| import matplotlib |
| 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 |
|
|
