Modifying test_util to work in the windows environment (scikit-bio#2068)

* modifying test_util to work on the windows environment

* fixing errors in test_registry.py

skbio/io/tests/test_registry.py

@@ -1710,8 +1710,8 @@ def writer(obj, fh):
             for line in iterator:
                 fh.write(line)
 
-        self.registry.write(obj, format='format1', into=fp, compression='bz2')
-        self.registry.write(obj, format='format1', into=f, compression='bz2')
+        self.registry.write(obj, format='format1', into=fp, compression='bz2', newline='\n')
+        self.registry.write(obj, format='format1', into=f, compression='bz2', newline='\n')
         expected = (
             b'BZh91AY&SY\x03\x89\x0c\xa6\x00\x00\x01\xc1\x00\x00\x108\x00 \x00'
             b'!\x9ah3M\x1c\xb7\x8b\xb9"\x9c(H\x01\xc4\x86S\x00')

skbio/io/tests/test_util.py

@@ -313,11 +313,12 @@ def check_closed(self, file, expected):
 
     def check_open_state_contents(self, file, contents, is_binary,
                                   **kwargs):
-        result = skbio.io.open(file, mode='w', **kwargs)
         if is_binary:
+            result = skbio.io.open(file, mode='w', **kwargs)
             self.assertIsInstance(result, (io.BufferedWriter,
                                            io.BufferedRandom))
         else:
+            result = skbio.io.open(file, mode='w', **kwargs, newline='')
             self.assertIsInstance(result, io.TextIOBase)
         self.assertTrue(result.writable())
 
@@ -396,11 +397,11 @@ def setUp(self):
         self._dir = tempfile.mkdtemp()
 
         with io.open(get_data_path('example_file'), mode='rb') as f:
-            self.binary_contents = f.read()
+            self.binary_contents = f.read().decode('utf8').replace("\r\n", "\n", -1).encode('utf8')
         self.binary_file = self._make_file('example_file')
 
         with io.open(get_data_path('big5_file'), mode='rb') as f:
-            self.encoded_contents = f.read()
+            self.encoded_contents = f.read().decode('big5').replace("\r\n", "\n", -1).encode('big5')
         self.big5_file = self._make_file('big5_file')
 
         with io.open(get_data_path('example_file.gz'), mode='rb') as f: