Add tests for encoders

and some refactoring

spotdl/encode/encoders/tests/test_avconv.py

@@ -0,0 +1,58 @@
+from spotdl.encode import EncoderBase
+from spotdl.encode.exceptions import AvconvNotFoundError
+from spotdl.encode.encoders import EncoderAvconv
+
+import pytest
+
+
+class TestEncoderAvconv:
+    def test_subclass(self):
+        assert issubclass(EncoderAvconv, EncoderBase)
+
+    def test_avconv_not_found_error(self):
+        with pytest.raises(AvconvNotFoundError):
+            EncoderAvconv(encoder_path="/a/nonexistent/path")
+
+
+class TestEncodingDefaults:
+    def encode_command(input_file, output_file):
+        command = [
+            'avconv', '-y', '-loglevel', '0',
+            '-i', input_file,
+            '-ab', '192k',
+            output_file,
+        ]
+        return command
+
+    @pytest.mark.parametrize("files, expected_command", [
+        (("test.m4a", "test.mp3"), encode_command("test.m4a", "test.mp3")),
+        (("abc.m4a", "cba.webm"), encode_command("abc.m4a", "cba.webm")),
+        (("bla bla.m4a", "ble ble.m4a"), encode_command("bla bla.m4a", "ble ble.m4a")),
+        (("😛.m4a", "• tongue.flac"), encode_command("😛.m4a", "• tongue.flac")),
+    ])
+    def test_generate_encode_command(self, files, expected_command):
+        encoder = EncoderAvconv()
+        assert encoder._generate_encode_command(*files) == expected_command
+
+
+class TestEncodingInDebugMode:
+    def debug_encode_command(input_file, output_file):
+        command = [
+            'avconv', '-y', '-loglevel', 'debug',
+            '-i', input_file,
+            '-ab', '192k',
+            output_file,
+        ]
+        return command
+
+    @pytest.mark.parametrize("files, expected_command", [
+        (("test.m4a", "test.mp3"), debug_encode_command("test.m4a", "test.mp3")),
+        (("abc.m4a", "cba.webm"), debug_encode_command("abc.m4a", "cba.webm")),
+        (("bla bla.m4a", "ble ble.m4a"), debug_encode_command("bla bla.m4a", "ble ble.m4a")),
+        (("😛.m4a", "• tongue.flac"), debug_encode_command("😛.m4a", "• tongue.flac")),
+    ])
+    def test_generate_encode_command_with_debug(self, files, expected_command):
+        encoder = EncoderAvconv()
+        encoder.set_debuglog()
+        assert encoder._generate_encode_command(*files) == expected_command
+