diff -r 2e484bdea8c4 -r b86a448a2965 contrib/python-zstandard/tests/test_cffi.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/python-zstandard/tests/test_cffi.py	Thu Nov 10 22:15:58 2016 -0800
@@ -0,0 +1,35 @@
+import io
+
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
+import zstd
+
+try:
+    import zstd_cffi
+except ImportError:
+    raise unittest.SkipTest('cffi version of zstd not available')
+
+
+class TestCFFIWriteToToCDecompressor(unittest.TestCase):
+    def test_simple(self):
+        orig = io.BytesIO()
+        orig.write(b'foo')
+        orig.write(b'bar')
+        orig.write(b'foobar' * 16384)
+
+        dest = io.BytesIO()
+        cctx = zstd_cffi.ZstdCompressor()
+        with cctx.write_to(dest) as compressor:
+            compressor.write(orig.getvalue())
+
+        uncompressed = io.BytesIO()
+        dctx = zstd.ZstdDecompressor()
+        with dctx.write_to(uncompressed) as decompressor:
+            decompressor.write(dest.getvalue())
+
+        self.assertEqual(uncompressed.getvalue(), orig.getvalue())
+
+