Update test

test/test_file_writing.py

@@ -50,6 +50,7 @@ def get_files(self, cliargs):
         all_files = {}
         all_files['test_file.txt'] = """The quick brown fox jumped over the lazy dog. %s""" % cliargs
         all_files['path/to/test_file.txt'] = """The quick brown fox jumped over the lazy dog. %s""" % cliargs
+        all_files['test_file.bin'] = bytes("""The quick brown fox jumped over the lazy dog. %s""" % cliargs, 'utf-8')
         all_files['../outside/path/to/test_file.txt'] = """Path outside directory should be skipped"""
         all_files['/absolute.txt'] = """Absolute file path should be skipped"""
         return all_files
@@ -96,5 +97,11 @@ def test_file_injection(self):
                 self.assertIn('test_key', content)
                 self.assertIn('test_value', content)
 
+            with open(os.path.join(td, 'test_file.bin'), 'r') as fh: # this particular binary file can be read in text mode
+                content = fh.read()
+                self.assertIn('quick brown', content)
+                self.assertIn('test_key', content)
+                self.assertIn('test_value', content)
+
             self.assertFalse(os.path.exists('../outside/path/to/test_file.txt'))
             self.assertFalse(os.path.exists('/absolute.txt'))