Switch to new add API in PhraseMatcher unpickle

spacy/matcher/phrasematcher.pyx

@@ -332,7 +332,7 @@ def unpickle_matcher(vocab, docs, callbacks, attr):
     matcher = PhraseMatcher(vocab, attr=attr)
     for key, specs in docs.items():
         callback = callbacks.get(key, None)
-        matcher.add(key, callback, *specs)
+        matcher.add(key, specs, on_match=callback)
     return matcher
 
 

spacy/tests/matcher/test_phrase_matcher.py

@@ -2,6 +2,7 @@
 from __future__ import unicode_literals
 
 import pytest
+import srsly
 from mock import Mock
 from spacy.matcher import PhraseMatcher
 from spacy.tokens import Doc
@@ -266,3 +267,26 @@ def test_phrase_matcher_basic_check(en_vocab):
     pattern = Doc(en_vocab, words=["hello", "world"])
     with pytest.raises(ValueError):
         matcher.add("TEST", pattern)
+
+
+def test_phrase_matcher_pickle(en_vocab):
+    matcher = PhraseMatcher(en_vocab)
+    mock = Mock()
+    matcher.add("TEST", [Doc(en_vocab, words=["test"])])
+    matcher.add("TEST2", [Doc(en_vocab, words=["test2"])], on_match=mock)
+    doc = Doc(en_vocab, words=["these", "are", "tests", ":", "test", "test2"])
+    assert len(matcher) == 2
+
+    b = srsly.pickle_dumps(matcher)
+    matcher_unpickled = srsly.pickle_loads(b)
+
+    # call after pickling to avoid recursion error related to mock
+    matches = matcher(doc)
+    matches_unpickled = matcher_unpickled(doc)
+
+    assert len(matcher) == len(matcher_unpickled)
+    assert matches == matches_unpickled
+
+    # clunky way to vaguely check that callback is unpickled
+    (vocab, docs, callbacks, attr) = matcher_unpickled.__reduce__()[1]
+    assert isinstance(callbacks.get("TEST2"), Mock)