Adding support for audio items with no derivatives

iiify/resolver.py

@@ -703,7 +703,12 @@ def create_manifest3(identifier, domain=None, page=None):
                         body.items.append(r)
             else:
                 # todo: deal with instances where there are no derivatives for whatever reason
-                pass
+                body = ResourceItem(
+                            id=f"https://archive.org/download/{identifier}/{file['name'].replace(' ', '%20')}",
+                            type='Sound',
+                            format=to_mimetype(file['format']),
+                            label={"none": [file['format']]},
+                            duration=float(file['length']))
 
             anno.body = body
             ap.add_item(anno)

tests/test_audio.py

@@ -0,0 +1,19 @@
+import os
+
+import unittest
+import math
+from flask.testing import FlaskClient
+from iiify.app import app
+
+class TestAudio(unittest.TestCase):
+
+    def setUp(self) -> None:
+        os.environ["FLASK_CACHE_DISABLE"] = "true"
+        self.test_app = FlaskClient(app)
+
+    def test_audio_no_derivatives(self):
+        resp = self.test_app.get("/iiif/3/kaled_jalil/manifest.json")
+        self.assertEqual(resp.status_code, 200)
+        manifest = resp.json
+
+        self.assertEqual(len(manifest['items']),114,f"Expected 114 canvases but got: {len(manifest['items'])}")