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spotdl/metadata/tests/test_embedder_base.py

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+from spotdl.metadata import EmbedderBase
+
+import pytest
+
+class EmbedderKid(EmbedderBase):
+    def __init__(self):
+        super().__init__()
+
+
+class TestEmbedderBaseABC:
+    def test_error_base_class_embedderbase(self):
+        with pytest.raises(TypeError):
+            # This abstract base class must be inherited from
+            # for instantiation
+            EmbedderBase()
+
+    def test_inherit_abstract_base_class_streamsbase(self):
+        EmbedderKid()
+
+
+class TestMethods:
+    @pytest.fixture(scope="module")
+    def embedderkid(self):
+        return EmbedderKid()
+
+    def test_target_formats(self, embedderkid):
+        assert embedderkid.supported_formats == ()
+
+    @pytest.mark.parametrize("path, expect_encoding", (
+        ("/a/b/c/file.mp3", "mp3"),
+        ("music/pop/1.wav", "wav"),
+        ("/a path/with spaces/track.m4a", "m4a"),
+    ))
+    def test_get_encoding(self, embedderkid, path, expect_encoding):
+        assert embedderkid.get_encoding(path) == expect_encoding
+
+    def test_apply_metadata_with_explicit_encoding(self, embedderkid):
+        with pytest.raises(TypeError):
+            embedderkid.apply_metadata("/path/to/music.mp3", {}, cached_albumart="imagedata", encoding="mp3")
+
+    def test_apply_metadata_with_implicit_encoding(self, embedderkid):
+        with pytest.raises(TypeError):
+            embedderkid.apply_metadata("/path/to/music.wav", {}, cached_albumart="imagedata")
+
+    class MockHTTPResponse:
+        """
+        This mocks `urllib.request.urlopen` for custom response text.
+        """
+        response_file = ""
+
+        def __init__(self, url):
+            pass
+
+        def read(self):
+            pass
+
+    def test_apply_metadata_without_cached_image(self, embedderkid, monkeypatch):
+        monkeypatch.setattr("urllib.request.urlopen", self.MockHTTPResponse)
+        metadata = {"album": {"images": [{"url": "http://animageurl.com"},]}}
+        with pytest.raises(TypeError):
+            embedderkid.apply_metadata("/path/to/music.wav", metadata, cached_albumart=None)
+
+    @pytest.mark.parametrize("fmt_method_suffix", (
+        "as_mp3",
+        "as_opus",
+        "as_flac",
+    ))
+    def test_embed_formats(self, fmt_method_suffix, embedderkid):
+        method = eval("embedderkid." + fmt_method_suffix)
+        with pytest.raises(NotImplementedError):
+            method("/a/random/path", {})
+