adding missing tests (no download)

tests/formatters/test_mute_formatter.py

@@ -0,0 +1,43 @@
+"""
+Tests for the MuteFormatter module
+"""
+
+import pytest
+from auto_archiver.core.metadata import Metadata
+
+
+@pytest.fixture
+def mute_formatter(setup_module):
+    return setup_module("mute_formatter")
+
+
+class TestMuteFormatter:
+    """Test the MuteFormatter functionality."""
+
+    def test_format_returns_none(self, mute_formatter, make_item):
+        """Test that format always returns None (mutes output)."""
+        item = make_item("https://example.com/test")
+        item.set("title", "Test Title")
+
+        result = mute_formatter.format(item)
+
+        assert result is None
+
+    def test_format_with_empty_metadata(self, mute_formatter):
+        """Test format with empty metadata."""
+        item = Metadata().set_url("https://example.com/empty")
+
+        result = mute_formatter.format(item)
+
+        assert result is None
+
+    def test_format_with_media(self, mute_formatter, make_item):
+        """Test that format still returns None even with media attached."""
+        from auto_archiver.core.media import Media
+
+        item = make_item("https://example.com/with-media")
+        item.add_media(Media(filename="test.mp4"))
+
+        result = mute_formatter.format(item)
+
+        assert result is None