Add unittest for Meta object

diff --git a/tests/test_meta.py b/tests/test_meta.py
new file mode 100644 (file)
index 0000000..031999f
--- /dev/null
+++ b/tests/test_meta.py
@@ -0,0 +1,123 @@
+# -*- coding: utf-8 -*-
+
+import unittest
+
+from sima.lib.meta import Meta, Artist, is_uuid4
+from sima.lib.meta import WrongUUID4, MetaException
+
+VALID = '110E8100-E29B-41D1-A716-116655250000'
+
+class TestMetaObject(unittest.TestCase):
+
+    def test_uuid_integrity(self):
+        Meta(mbid=VALID, name='test')
+        Meta(mbid=VALID.lower(), name='test')
+        wrong = VALID +'a'
+        self.assertRaises(WrongUUID4, is_uuid4, wrong)
+        #  test UUID4 format validation
+        self.assertRaises(WrongUUID4, is_uuid4, VALID.replace('4', '3'))
+        self.assertRaises(WrongUUID4, is_uuid4, VALID.replace('A', 'Z'))
+
+    def test_init(self):
+        for args in [
+                {'mbid':VALID},
+                {'name': None},
+                {},
+                ]:
+            with self.assertRaises(MetaException,
+                                   msg='{} does not raise an except.'.format(args)):
+                Meta(**args)
+
+    def test_equality(self):
+        a = Meta(mbid=VALID, name='a')
+        b = Meta(mbid=VALID, name='b')
+        self.assertEqual(a, b)
+
+    def test_hash(self):
+        a = Meta(mbid=VALID, name='a')
+        b = Meta(mbid=VALID, name='b')
+        c = Meta(mbid=VALID, name='c')
+        self.assertTrue(len({a,b,c}) == 1)
+        self.assertTrue(a in [c, b])
+        self.assertTrue(a in {c, b})
+        # mbid is immutable
+        self.assertRaises(AttributeError, a.__setattr__, 'mbid', VALID)
+
+    def test_identity(self):
+        a = Meta(mbid=VALID, name='a')
+        b = Meta(mbid=VALID, name='a')
+        self.assertTrue(a is not b)
+
+    def test_aliases(self):
+        art0 = Meta(name='Silver Mt. Zion')
+        art0.add_alias('A Silver Mt. Zion')
+        art0.add_alias(art0)
+
+        # Controls 'Silver Mt. Zion' is not in aliases
+        self.assertTrue('Silver Mt. Zion' not in art0.aliases)
+
+        # test equality str with Obj.__aliases
+        self.assertTrue(art0 == 'A Silver Mt. Zion')
+        self.assertTrue('A Silver Mt. Zion' == art0)
+        # test equality Obj.__name with OgjBis.__aliases
+        self.assertTrue(art0 == Meta(name='A Silver Mt. Zion'))
+
+    def test_union(self):
+        art00 = Meta(name='Aphex Twin',
+                           mbid='f22942a1-6f70-4f48-866e-238cb2308fbd')
+        art02 = Meta(name='Some Other Name not even close, avoid fuzzy match',
+                           mbid='f22942a1-6f70-4f48-866e-238cb2308fbd')
+
+        self.assertTrue(len({art00, art02}) == 1)
+        art00._Meta__name = art02._Meta__name = 'Aphex Twin'
+        self.assertTrue(len({art00, art02}) == 1)
+
+        # >>> len({Artist(name='Name'), Artist(name='Name', mbid=<UUID4>)}) == 2
+        art00._Meta__mbid = None
+        self.assertTrue(len({art00, art02}) == 2,
+                        'wrong: hash({!r}) == hash({!r})'.format(art00, art02))
+        # equivalent: self.assertTrue(hash(art00) != hash(art02))
+
+        # >>> len({Artist(name='Name'), Artist(name='Name')}) == 1
+        art00._Meta__mbid = art02._Meta__mbid = None
+        # equivalent: self.assertTrue(hash(art00) == hash(art02))
+        self.assertTrue(len({art00, art02}) == 1,
+                        'wrong: hash({!r}) != hash({!r})'.format(art00, art02))
+
+    def test_comparison(self):
+        art00 = Meta(name='Aphex Twin',
+                     mbid='f22942a1-6f70-4f48-866e-238cb2308fbd')
+        art01 = Meta(name='Aphex Twin',)
+        art02 = Meta(name='Some Other Name not even close, avoid fuzzy match',
+                     mbid='f22942a1-6f70-4f48-866e-238cb2308fbd')
+        art10 = Meta(name='Aphex Twin',
+                     mbid='d22942a1-6f70-4f48-866e-238cb2308fbd')
+        # testing name/mbid == name/None
+        self.assertTrue(art00 == art01, 'wrong: %r != %r' % (art00, art01))
+        # testing name/mbid == other_name/mbid
+        self.assertTrue(art00 == art02, 'wrong: %r != %r' % (art00, art02))
+        #  testing name/mbid != name/other_mbid
+        self.assertTrue(art00 != art10, 'wrong: %r == %r' % (art00, art10))
+        # Testing name/None == name/None
+        art10._Meta__mbid = None
+        self.assertTrue(art01 == art10, 'wrong: %r != %r' % (art00, art01))
+
+
+class TestArtistObject(unittest.TestCase):
+
+    def test_init(self):
+        artist = {'artist': ['Name featuring', 'Feature'],
+                  'albumartist': 'Name',
+                  'musicbrainz_artistid': VALID,
+                  'musicbrainz_albumartistid': VALID.replace('11', '22'),
+                  }
+        art = Artist(**artist)
+        self.assertTrue(art.name == 'Name')
+        self.assertTrue(art.mbid == VALID.replace('11', '22'))
+        artist.pop('musicbrainz_albumartistid')
+        art = Artist(**artist)
+        self.assertTrue(art.mbid == VALID)
+        artist.pop('albumartist')
+        art = Artist(**artist)
+
+# vim: ai ts=4 sw=4 sts=4 expandtab