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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 unittest 

26import tempfile 

27import os 

28import shutil 

29 

30try: 

31 import matplotlib 

32 matplotlib.use("Agg") # noqa:E402 

33 from matplotlib import pyplot 

34except ImportError: 

35 pyplot = None 

36 

37import numpy as np 

38from lsst.daf.butler import Butler, DatasetType 

39import filecmp 

40 

41TESTDIR = os.path.abspath(os.path.dirname(__file__)) 

42 

43 

44@unittest.skipIf(pyplot is None, 

45 "skipping test because matplotlib import failed") 

46class MatplotlibFormatterTestCase(unittest.TestCase): 

47 """Test for MatplotlibFormatter. 

48 """ 

49 

50 def setUp(self): 

51 self.root = tempfile.mkdtemp(dir=TESTDIR) 

52 Butler.makeRepo(self.root) 

53 

54 def tearDown(self): 

55 if os.path.exists(self.root): 

56 shutil.rmtree(self.root, ignore_errors=True) 

57 

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) 

83 

84 

85if __name__ == "__main__": 85 ↛ 86line 85 didn't jump to line 86, because the condition on line 85 was never true

86 unittest.main()