failing test for Issue #3449

spacy/tests/regression/test_issue3449.py

@@ -0,0 +1,22 @@
+import pytest
+
+from spacy.lang.en import English
+
+
+@pytest.mark.xfail(reason="Current default suffix rules avoid one upper-case letter before a dot.")
+def test_issue3449():
+    nlp = English()
+    nlp.add_pipe(nlp.create_pipe('sentencizer'))
+
+    text1 = "He gave the ball to I. Do you want to go to the movies with I?"
+    text2 = "He gave the ball to I.  Do you want to go to the movies with I?"
+    text3 = "He gave the ball to I.\nDo you want to go to the movies with I?"
+
+    t1 = nlp(text1)
+    t2 = nlp(text2)
+    t3 = nlp(text3)
+
+    assert t1[5].text == 'I'
+    assert t2[5].text == 'I'
+    assert t3[5].text == 'I'
+