minor style and text fixesdevelop

1 files changed, 4 insertions, 1 deletions

diff --git a/test/extractor/text/test_metrics.py b/test/extractor/text/test_metrics.py
index 9cc6a94..6d87889 100644
--- a/test/extractor/text/test_metrics.py
+++ b/test/extractor/text/test_metrics.py
@@ -55,8 +55,8 @@ class TestTextMetrics(unittest.TestCase):
         path = os.path.join(os.path.dirname(__file__), 'example-en.txt')
         # fetch document
         text = rdr(path)
+        # extracts all specified predicates
         triples = set(ext.extract(subject, text, principals))
-
         self.assertSetEqual({(s,p,o) for s,p,o in triples if p.uri != ns.bse.vocabulary_entropy}, {
             (subject, ext.schema.predicate(ns.bse.num_characters), 21997),
             (subject, ext.schema.predicate(ns.bse.num_paragraphs), 48),
@@ -66,6 +66,9 @@ class TestTextMetrics(unittest.TestCase):
         entropy = {o for s,p,o in triples if p.uri == ns.bse.vocabulary_entropy}
         self.assertEqual(len(entropy), 1)
         self.assertAlmostEqual(list(entropy)[0], 8.830360505)
+        # skip unknown predicates
+        self.assertSetEqual(set(), set(ext.extract(subject, text,
+            {ext.schema.predicate(ns.bsfs.Predicate).child(ns.bse.unknown)})))
 
 ## main ##