* Add test for multithreading

spacy/tests/website/test_home.py

@@ -160,3 +160,15 @@ def test_efficient_binary_serialization(doc):
     for byte_string in Doc.read_bytes(open('moby_dick.bin', 'rb')):
        doc = Doc(nlp.vocab)
        doc.from_bytes(byte_string)
+
+
+@pytest.mark.models
+def test_multithreading(nlp):
+    texts = [
+        u'One document.',
+        u'A second document.',
+        u'Another document (you should use a generator!).'
+    ]
+    for doc in nlp.pipe(texts, batch_size=1000, n_threads=4):
+        assert doc.is_parsed
+