Add regression test for #740

spacy/tests/regression/test_issue740.py

@@ -0,0 +1,13 @@
+# coding: utf-8
+
+from __future__ import unicode_literals
+
+import pytest
+
+
+@pytest.mark.parametrize('text', ["3/4/2012", "01/12/1900"])
+def test_issue740(en_tokenizer, text):
+    """Test that dates are not split and kept as one token. This behaviour is currently inconsistent, since dates separated by hyphens are still split.
+    This will be hard to prevent without causing clashes with numeric ranges."""
+    tokens = en_tokenizer(text)
+    assert len(tokens) == 1