Add test for Issue #1537

spacy/tests/regression/test_issue1537.py

@@ -0,0 +1,30 @@
+'''Test Span.as_doc() doesn't segfault'''
+from ...tokens import Doc 
+from ...vocab import Vocab
+from ... import load as load_spacy
+
+
+def test_issue1537():
+    string = 'The sky is blue . The man is pink . The dog is purple .'
+    doc = Doc(Vocab(), words=string.split())
+    doc[0].sent_start = True
+    for word in doc[1:]:
+        if word.nbor(-1).text == '.':
+            word.sent_start = True
+        else:
+            word.sent_start = False
+
+    sents = list(doc.sents)
+    sent0 = sents[0].as_doc()
+    sent1 = sents[1].as_doc()
+    assert isinstance(sent0, Doc)
+    assert isinstance(sent1, Doc)
+
+
+# Currently segfaulting, due to l_edge and r_edge misalignment
+#def test_issue1537_model():
+#    nlp = load_spacy('en')
+#    doc = nlp(u'The sky is blue. The man is pink. The dog is purple.')
+#    sents = [s.as_doc() for s in doc.sents]
+#    print(list(sents[0].noun_chunks))
+#    print(list(sents[1].noun_chunks))