Write tests for YouTube metadata

spotdl/metadata/tests/test_provider_base.py

@@ -0,0 +1,60 @@
+from spotdl.metadata import ProviderBase
+from spotdl.metadata import StreamsBase
+
+import pytest
+
+class TestStreamsBaseABC:
+    def test_error_abstract_base_class_streamsbase(self):
+        with pytest.raises(TypeError):
+            # This abstract base class must be inherited from
+            # for instantiation
+            StreamsBase()
+
+    def test_inherit_abstract_base_class_streamsbase(self):
+        class StreamsKid(StreamsBase):
+            def __init__(self, streams):
+                super().__init__(streams)
+
+        streams = ("stream1", "stream2", "stream3")
+        kid = StreamsKid(streams)
+        assert kid.all == streams
+
+
+class TestMethods:
+    class StreamsKid(StreamsBase):
+        def __init__(self, streams):
+            super().__init__(streams)
+
+
+    @pytest.fixture(scope="module")
+    def streamskid(self):
+        streams = ("stream1", "stream2", "stream3")
+        streamskid = self.StreamsKid(streams)
+        return streamskid
+
+    def test_getbest(self, streamskid):
+        best_stream = streamskid.getbest()
+        assert best_stream == "stream1"
+
+    def test_getworst(self, streamskid):
+        worst_stream = streamskid.getworst()
+        assert worst_stream == "stream3"
+
+
+class TestProviderBaseABC:
+    def test_error_abstract_base_class_providerbase(self):
+        with pytest.raises(TypeError):
+            # This abstract base class must be inherited from
+            # for instantiation
+            ProviderBase()
+
+    def test_inherit_abstract_base_class_providerbase(self):
+        class ProviderKid(ProviderBase):
+            def from_url(self, query):
+                pass
+
+            def metadata_to_standard_form(self, metadata):
+                pass
+
+        ProviderKid()
+