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
29from random import Random
31try:
32 import matplotlib
33 matplotlib.use("Agg") # noqa:E402
34 from matplotlib import pyplot
35except ImportError:
36 pyplot = None
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 """
49 RANDOM_SEED = 10
51 def setUp(self):
52 self.root = tempfile.mkdtemp(dir=TESTDIR)
53 Butler.makeRepo(self.root)
54 # Create a random image for testing
55 self.rng = Random(self.RANDOM_SEED)
57 def tearDown(self):
58 if os.path.exists(self.root):
59 shutil.rmtree(self.root, ignore_errors=True)
61 def testMatplotlibFormatter(self):
62 butler = Butler(self.root, run="testrun")
63 datasetType = DatasetType("test_plot", [], "Plot",
64 universe=butler.registry.dimensions)
65 butler.registry.registerDatasetType(datasetType)
66 # Does not have to be a random image
67 pyplot.imshow([self.rng.sample(range(50), 10),
68 self.rng.sample(range(50), 10),
69 self.rng.sample(range(50), 10),
70 ])
71 ref = butler.put(pyplot.gcf(), datasetType)
72 uri = butler.getURI(ref)
74 # Following test needs a local file
75 with uri.as_local() as local:
76 with tempfile.NamedTemporaryFile(suffix=".png") as file:
77 pyplot.gcf().savefig(file.name)
78 self.assertTrue(
79 filecmp.cmp(
80 local.ospath,
81 file.name,
82 shallow=True
83 )
84 )
85 self.assertTrue(butler.datasetExists(ref))
86 with self.assertRaises(ValueError):
87 butler.get(ref)
88 butler.pruneDatasets([ref], unstore=True, purge=True)
89 with self.assertRaises(LookupError):
90 butler.datasetExists(ref)
93if __name__ == "__main__": 93 ↛ 94line 93 didn't jump to line 94, because the condition on line 93 was never true
94 unittest.main()