* Add tests for canon_case

tests/test_canon_case.py

@@ -0,0 +1,20 @@
+from __future__ import unicode_literals
+
+import py.test
+
+from spacy.orth import canon_case as cc
+
+def test_nasa():
+    assert cc('Nasa', 0.0, 0, {'upper': 0.6, 'title': 0.3, 'lower': 0.1}, {}) == 'NASA'
+
+
+def test_john():
+    assert cc('john', 0.0, 0, {'title': 0.6, 'upper': 0.3, 'lower': 0.1}, {}) == 'John'
+
+
+def test_apple():
+    assert cc('apple', 0.0, 0, {'lower': 0.6, 'title': 0.3, 'upper': 0.1}, {}) == 'apple'
+
+
+def test_tie():
+    assert cc('I', 0.0, 0, {'lower': 0.0, 'title': 0.0, 'upper': 0.0}, {}) == 'I'