Add regression test for #686

spacy/tests/regression/test_issue686.py

@@ -0,0 +1,13 @@
+# coding: utf8
+from __future__ import unicode_literals
+
+import pytest
+
+
+@pytest.mark.xfail
+@pytest.mark.models
+@pytest.mark.parametrize('text', ["He is the man.", "They are the men."])
+def test_issue686(EN, text):
+    """Test that pronoun lemmas are assigned correctly."""
+    tokens = EN(text)
+    assert tokens[0].lemma_ == "-PRON-"