Coverage for tests/test_matplotlibFormatter.py: 49%
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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 os
27from random import Random
28import tempfile
30try:
31 import matplotlib
32 matplotlib.use("Agg") # noqa:E402
33 from matplotlib import pyplot
34except ImportError:
35 pyplot = None
37from lsst.daf.butler import Butler, DatasetType
38from lsst.daf.butler.tests.utils import makeTestTempDir, removeTestTempDir
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 = makeTestTempDir(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 removeTestTempDir(self.root)
60 def testMatplotlibFormatter(self):
61 butler = Butler(self.root, run="testrun")
62 datasetType = DatasetType("test_plot", [], "Plot",
63 universe=butler.registry.dimensions)
64 butler.registry.registerDatasetType(datasetType)
65 # Does not have to be a random image
66 pyplot.imshow([self.rng.sample(range(50), 10),
67 self.rng.sample(range(50), 10),
68 self.rng.sample(range(50), 10),
69 ])
70 ref = butler.put(pyplot.gcf(), datasetType)
71 uri = butler.getURI(ref)
73 # Following test needs a local file
74 with uri.as_local() as local:
75 with tempfile.NamedTemporaryFile(suffix=".png") as file:
76 pyplot.gcf().savefig(file.name)
77 self.assertTrue(
78 filecmp.cmp(
79 local.ospath,
80 file.name,
81 shallow=True
82 )
83 )
84 self.assertTrue(butler.datasetExists(ref))
85 with self.assertRaises(ValueError):
86 butler.get(ref)
87 butler.pruneDatasets([ref], unstore=True, purge=True)
88 with self.assertRaises(LookupError):
89 butler.datasetExists(ref)
92if __name__ == "__main__": 92 ↛ 93line 92 didn't jump to line 93, because the condition on line 92 was never true
93 unittest.main()