Added regression test for zip file open bug

fs/tests/zipfs_binary_test.py

+"""
+Test case for ZipFS binary file reading/writing
+Passes ok on Linux, fails on Windows (tested: Win7, 64-bit):
+
+AssertionError: ' \r\n' != ' \n'
+"""
+
+import unittest
+from fs.zipfs import ZipFS
+import os
+
+class ZipFsBinaryWriteRead(unittest.TestCase):
+    test_content = chr(32) + chr(10)
+    
+    def setUp(self):
+        self.z = ZipFS('test.zip', 'w')
+    
+    def tearDown(self):
+        try:
+            os.remove('test.zip')
+        except:
+            pass
+
+    def test_binary_write_read(self):
+        # GIVEN zipfs
+        z = self.z
+
+        # WHEN binary data is written to a test file in zipfs
+        f = z.open('test.data', 'wb')
+        f.write(self.test_content)
+        f.close()
+        z.close()
+
+        # THEN the same binary data is retrieved when opened again
+        z = ZipFS('test.zip', 'r')
+        f = z.open('test.data', 'rb')
+        content = f.read()
+        f.close()
+        z.close()
+        self.assertEqual(content, self.test_content)
+
+if __name__ == '__main__':
+    unittest.main()