Source code for PyMca5.tests.EdfFileTest

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__author__ = "V. Armando Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import unittest
import sys
import os
import gc
import tempfile
import numpy

[docs]class testEdfFile(unittest.TestCase):
[docs] def setUp(self): """ import the EdfFile module """ tmpFile = tempfile.mkstemp(text=False) os.close(tmpFile[0]) self.fname = tmpFile[1] try: from PyMca5.PyMcaIO.EdfFile import EdfFile self.fileClass = EdfFile except: self.fileClass = None
[docs] def tearDown(self): """clean up any possible files""" gc.collect() if self.fileClass is not None: if os.path.exists(self.fname): os.remove(self.fname)
[docs] def testEdfFileImport(self): #"""Test successful import""" self.assertTrue(self.fileClass is not None)
[docs] def testEdfFileReadWrite(self): # create a file self.assertTrue(self.fileClass is not None) data = numpy.arange(10000).astype(numpy.int32) data.shape = 100, 100 edf = self.fileClass(self.fname, 'wb+') edf.WriteImage({'Title': "title", 'key': 'key'}, data) edf = None # read it edf = self.fileClass(self.fname, 'rb') # the number of images nImages = edf.GetNumImages() self.assertEqual(nImages, 1) # the header information header = edf.GetHeader(0) self.assertEqual(header['Title'], "title") self.assertEqual(header['key'], "key") #the data information readData = edf.GetData(0) self.assertEqual(readData.dtype, numpy.int32, 'Read type %s instead of %s' %\ (readData.dtype, numpy.int32)) self.assertEqual(readData[10,20], data[10,20]) self.assertEqual(readData[20,10], data[20,10]) edf =None # add a second Image edf = self.fileClass(self.fname, 'rb+') edf.WriteImage({'Title': "title2", 'key': 'key2'}, data.astype(numpy.float32), Append=1) edf = None # read it edf = self.fileClass(self.fname, 'rb') # the number of images nImages = edf.GetNumImages() self.assertEqual(nImages, 2) # the header information header = edf.GetHeader(1) self.assertEqual(header['Title'], "title2") self.assertEqual(header['key'], "key2") # the data information readData = edf.GetData(1) self.assertEqual(readData.dtype, numpy.float32) self.assertTrue(abs(readData[10,20]-data[10,20]) < 0.00001) self.assertTrue(abs(readData[20,10]-data[20,10]) < 0.00001) edf =None gc.collect()
[docs]def getSuite(auto=True): testSuite = unittest.TestSuite() if auto: testSuite.addTest(\ unittest.TestLoader().loadTestsFromTestCase(testEdfFile)) else: # use a predefined order testSuite.addTest(testEdfFile("testEdfFileImport")) testSuite.addTest(testEdfFile("testEdfFileReadWrite")) return testSuite
[docs]def test(auto=False): unittest.TextTestRunner(verbosity=2).run(getSuite(auto=auto))
if __name__ == '__main__': test()