Coverage for tests/test_matplotlibFormatter.py : 48%

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1# This file is part of daf_butler.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (http://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 <http://www.gnu.org/licenses/>.
22"""Tests for MatplotlibFormatter.
23"""
25import unittest
26import tempfile
27import os
28import shutil
30try:
31 import matplotlib
32 matplotlib.use("Agg") # noqa:E402
33 from matplotlib import pyplot
34except ImportError:
35 pyplot = None
37import numpy as np
38from lsst.daf.butler import Butler, DatasetType
39import filecmp
40import urllib
42TESTDIR = os.path.abspath(os.path.dirname(__file__))
45@unittest.skipIf(pyplot is None,
46 "skipping test because matplotlib import failed")
47class MatplotlibFormatterTestCase(unittest.TestCase):
48 """Test for MatplotlibFormatter.
49 """
51 def setUp(self):
52 self.root = tempfile.mkdtemp(dir=TESTDIR)
53 Butler.makeRepo(self.root)
55 def tearDown(self):
56 if os.path.exists(self.root):
57 shutil.rmtree(self.root, ignore_errors=True)
59 def testMatplotlibFormatter(self):
60 butler = Butler(self.root, run="testrun")
61 datasetType = DatasetType("test_plot", [], "Plot",
62 universe=butler.registry.dimensions)
63 butler.registry.registerDatasetType(datasetType)
64 pyplot.imshow(np.random.randn(3, 4))
65 ref = butler.put(pyplot.gcf(), datasetType)
66 parsed = urllib.parse.urlparse(butler.getUri(ref))
67 with tempfile.NamedTemporaryFile(suffix=".png") as file:
68 pyplot.gcf().savefig(file.name)
69 self.assertTrue(
70 filecmp.cmp(
71 parsed.path,
72 file.name,
73 shallow=True
74 )
75 )
76 self.assertTrue(butler.datasetExists(ref))
77 with self.assertRaises(ValueError):
78 butler.get(ref)
79 butler.pruneDatasets([ref], unstore=True, purge=True)
80 with self.assertRaises(LookupError):
81 butler.datasetExists(ref)
84if __name__ == "__main__": 84 ↛ 85line 84 didn't jump to line 85, because the condition on line 84 was never true
85 unittest.main()