issue #2959: pdfParser selftest

Tests/test_file_pdf.py

@@ -1,5 +1,5 @@
 from helper import unittest, PillowTestCase, hopper
-from PIL import Image
+from PIL import Image, pdfParser
 import os.path
 
 
@@ -97,6 +97,9 @@ class TestFilePdf(PillowTestCase):
         self.assertTrue(os.path.isfile(outfile))
         self.assertGreater(os.path.getsize(outfile), 0)
 
+    def test_pdf_parser(self):
+        pdfParser.selftest()
+
 
 if __name__ == '__main__':
     unittest.main()