Coverage for tests/test_matplotlibFormatter.py: 42%

43 statements  

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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/>. 

21 

22"""Tests for MatplotlibFormatter. 

23""" 

24 

25import os 

26import tempfile 

27import unittest 

28from random import Random 

29 

30try: 

31 import matplotlib 

32 

33 matplotlib.use("Agg") # noqa:E402 

34 from matplotlib import pyplot 

35except ImportError: 

36 pyplot = None 

37 

38import filecmp 

39 

40from lsst.daf.butler import Butler, DatasetType 

41from lsst.daf.butler.tests.utils import makeTestTempDir, removeTestTempDir 

42 

43TESTDIR = os.path.abspath(os.path.dirname(__file__)) 

44 

45 

46@unittest.skipIf(pyplot is None, "skipping test because matplotlib import failed") 

47class MatplotlibFormatterTestCase(unittest.TestCase): 

48 """Test for MatplotlibFormatter.""" 

49 

50 RANDOM_SEED = 10 

51 

52 def setUp(self): 

53 self.root = makeTestTempDir(TESTDIR) 

54 Butler.makeRepo(self.root) 

55 # Create a random image for testing 

56 self.rng = Random(self.RANDOM_SEED) 

57 

58 def tearDown(self): 

59 removeTestTempDir(self.root) 

60 

61 def testMatplotlibFormatter(self): 

62 butler = Butler(self.root, run="testrun") 

63 datasetType = DatasetType("test_plot", [], "Plot", universe=butler.registry.dimensions) 

64 butler.registry.registerDatasetType(datasetType) 

65 # Does not have to be a random image 

66 pyplot.imshow( 

67 [ 

68 self.rng.sample(range(50), 10), 

69 self.rng.sample(range(50), 10), 

70 self.rng.sample(range(50), 10), 

71 ] 

72 ) 

73 ref = butler.put(pyplot.gcf(), datasetType) 

74 uri = butler.getURI(ref) 

75 

76 # Following test needs a local file 

77 with uri.as_local() as local: 

78 with tempfile.NamedTemporaryFile(suffix=".png") as file: 

79 pyplot.gcf().savefig(file.name) 

80 self.assertTrue(filecmp.cmp(local.ospath, file.name, shallow=True)) 

81 self.assertTrue(butler.datasetExists(ref)) 

82 with self.assertRaises(ValueError): 

83 butler.get(ref) 

84 butler.pruneDatasets([ref], unstore=True, purge=True) 

85 with self.assertRaises(LookupError): 

86 butler.datasetExists(ref) 

87 

88 

89if __name__ == "__main__": 89 ↛ 90line 89 didn't jump to line 90, because the condition on line 89 was never true

90 unittest.main()