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test_coordinatesystem.py
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1# This file is part of gauss2d.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
21
22import lsst.gauss2d as g2d
23
24import math
25import pytest
26
27
29 for value_bad in (0., math.inf, math.nan):
30 with pytest.raises(ValueError):
31 g2d.CoordinateSystem(value_bad)
32 with pytest.raises(ValueError):
33 g2d.CoordinateSystem(1.0, value_bad)
34
35 for value_bad in (math.inf, math.nan):
36 with pytest.raises(ValueError):
37 print(value_bad)
38 g2d.CoordinateSystem(1.0, 1.0, value_bad)
39 g2d.CoordinateSystem(1.0, 1.0, 1.0, value_bad)
40
41 coordsys1 = g2d.CoordinateSystem(1.0, 3.0, -10., 23.)
42 coordsys2 = g2d.CoordinateSystem(1.0, 3.0, -10., 23.)
43
44 assert coordsys1 == coordsys2
45 str_cs1 = "CoordinateSystem(dx1=1.000000e+00, dy2=3.000000e+00, x_min=-1.000000e+01, y_min=2.300000e+01)"
46 assert str(coordsys1) == str_cs1
47 assert repr(coordsys1) == "lsst.gauss2d." + str_cs1
A coordinate system specifying image scale and orientation.