Coverage for tests/test_matplotlibFormatter.py : 46%

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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
41TESTDIR = os.path.abspath(os.path.dirname(__file__))
44@unittest.skipIf(pyplot is None,
45 "skipping test because matplotlib import failed")
46class MatplotlibFormatterTestCase(unittest.TestCase):
47 """Test for MatplotlibFormatter.
48 """
50 def setUp(self):
51 self.root = tempfile.mkdtemp(dir=TESTDIR)
52 Butler.makeRepo(self.root)
54 def tearDown(self):
55 if os.path.exists(self.root):
56 shutil.rmtree(self.root, ignore_errors=True)
58 def testMatplotlibFormatter(self):
59 butler = Butler(self.root, run="testrun")
60 datasetType = DatasetType("test_plot", [], "Plot",
61 universe=butler.registry.dimensions)
62 butler.registry.registerDatasetType(datasetType)
63 pyplot.imshow(np.random.randn(3, 4))
64 ref = butler.put(pyplot.gcf(), datasetType)
65 uri = butler.getURI(ref)
66 # The test after this will not work if we don't have local file
67 self.assertEqual(uri.scheme, "file", "Testing returned URI: {uri}")
68 with tempfile.NamedTemporaryFile(suffix=".png") as file:
69 pyplot.gcf().savefig(file.name)
70 self.assertTrue(
71 filecmp.cmp(
72 uri.path,
73 file.name,
74 shallow=True
75 )
76 )
77 self.assertTrue(butler.datasetExists(ref))
78 with self.assertRaises(ValueError):
79 butler.get(ref)
80 butler.pruneDatasets([ref], unstore=True, purge=True)
81 with self.assertRaises(LookupError):
82 butler.datasetExists(ref)
85if __name__ == "__main__": 85 ↛ 86line 85 didn't jump to line 86, because the condition on line 85 was never true
86 unittest.main()