Add test for Issue #955

spacy/tests/regression/test_issue995.py

@@ -0,0 +1,20 @@
+import pytest
+from ... import load as load_spacy
+
+@pytest.fixture
+def doc():
+    nlp = load_spacy('en')
+    return nlp('Does flight number three fifty-four require a connecting flight'
+               ' to get to Boston?')
+
+
+@pytest.mark.models
+def test_issue955(doc):
+    '''Test that we don't have any nested noun chunks'''
+    seen_tokens = set()
+    for np in doc.noun_chunks:
+        print(np.text, np.root.text, np.root.dep_, np.root.tag_)
+        for word in np:
+            key = (word.i, word.text)
+            assert key not in seen_tokens
+            seen_tokens.add(key)