Commit inicial

Habia trabajado un buen poco pero como vi que tenia que separar los
repositorios perdi bastante la historia :c

fetcher/tests.py

@@ -0,0 +1,44 @@
+import redis
+from django.test import TestCase
+
+from fetcher import musicbrainz
+
+
+class MusicBrainzTestCase(TestCase):
+
+    def setUp(self):
+        redis.Redis().flushall()
+
+    def test_can_do_basic_request(self):
+        artist_url = 'https://musicbrainz.org/ws/2/artist/65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
+        musicbrainz._do_request(artist_url)
+
+    def test_do_request_response_format(self):
+        artist_url = 'https://musicbrainz.org/ws/2/artist/65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
+        response = musicbrainz._do_request(artist_url)
+        self.assertIsInstance(response, dict)
+        self.assertEquals(response['status'], 200)
+        self.assertIsInstance(response['response'], dict)
+
+    def test_do_request_input_validation(self):
+        artist_url = 'https://musicbrainz.org/ws/2/artist/65f4f0c5-ef9e-490c-aee3-909e7ae6b2ab'
+        self.assertRaises(ValueError, musicbrainz._do_request, None)
+        self.assertRaises(ValueError, musicbrainz._do_request, '')
+        musicbrainz._headers['user-agent'] = None
+        self.assertRaises(ValueError, musicbrainz._do_request, artist_url)
+
+    def test_cache(self):
+        def fun():
+            return {}
+
+        musicbrainz.cache(fun)()
+        self.assertTrue(redis.Redis().keys('*') is not None)
+        self.assertEquals(musicbrainz.cache(fun)(), {})
+
+        redis.Redis().set('fun, [[], {}]', '{"test": true}')
+        self.assertEquals(musicbrainz.cache(fun)(), {"test": True})
+
+        def fun(a, b):
+            return {}
+
+        musicbrainz.cache(fun)('word', [''])