Added: tests for extracting tests from pdfs with Type3 fonts (#205)

samples/README

@@ -20,6 +20,17 @@ jo.pdf:
   (File generated from jo.tex by LaTeX and dvi2pdfm)
 
 --
+contrib/matplotlib.pdf
+  Copyright 2018, James R Barlow
+  Example file created in matplotlib to add a Type3 font to the samples
+  Released under the terms of the "LICENSE" file
+
+--
+nonfree/cmp_itext_logo.pdf
+  Bruno Lowagie
+  "iText Logo - Type 3 font"
+  http://gitlab.itextsupport.com/itext/sandbox/raw/master/cmpfiles/fonts/cmp_itext_logo.pdf
+
 nonfree/dmca.pdf: 
   U.S. Copyright Office
   The Digital Millenium Copyright Act

tests/test_tools_pdf2txt.py

@@ -112,5 +112,14 @@ class TestDumpImages(object):
         assert image_files[0].endswith('.jb2')
 
 
+    def test_contrib_matplotlib(self):
+        """Test a pdf with Type3 font"""
+        run('../samples/contrib/', 'matplotlib')
+
+    def test_nonfree_cmp_itext_logo(self):
+        """Test a pdf with Type3 font"""
+        run('../samples/nonfree/', 'cmp_itext_logo')
+
+
 if __name__ == '__main__':
     nose.runmodule()