From ac9e3a4a8beec9bfa849aa2c0d64788e58e9999f Mon Sep 17 00:00:00 2001
From: Matthew Honnibal <honnibal+gh@gmail.com>
Date: Sun, 30 Dec 2018 13:15:54 +0100
Subject: [PATCH] Add test for #1773

---
 spacy/tests/regression/test_issue1773.py | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 spacy/tests/regression/test_issue1773.py

diff --git a/spacy/tests/regression/test_issue1773.py b/spacy/tests/regression/test_issue1773.py
new file mode 100644
index 000000000..5b4307b44
--- /dev/null
+++ b/spacy/tests/regression/test_issue1773.py
@@ -0,0 +1,9 @@
+from __future__ import unicode_literals
+
+
+def test_issue1773(en_tokenizer):
+    """Test that spaces don't receive a POS but no TAG. This is the root cause
+    of the serialization issue reported in #1773."""
+    doc = en_tokenizer('\n')
+    if doc[0].pos_ == 'SPACE':
+        assert doc[0].tag_ != ""