* Add test for reading in POS tags

tests/test_read_pos.py

@@ -0,0 +1,15 @@
+import py.test
+from spacy.pos_util import realign_tagged
+from spacy.pos_util import _parse_line
+
+def test_realign():
+    rules = ["<SEP>,", "ca<SEP>n't", "``<SEP>"]
+    tagged = "``/`` I/PRP ca/MD n't/RB"
+    assert realign_tagged(rules, tagged) == "``<SEP>I/``_PRP ca<SEP>n't/MD_RB"
+
+
+def test_parse_line():
+    line = "Pierre/NNP Vinken,/NNP_, isn't/VBZ_RB 61/CD years/NNS old./RB_.\n"
+    tokens, tags = _parse_line(line, '/')
+    assert len(tokens) == len(tags)
+    assert len(tokens) == 9