[GEMINI] Add unit tests for FormatParser subclasses and ParserFactory

tests/test_forensics.py

@@ -605,3 +605,32 @@ def test_metadata_decoded_hints_cli():
     assert "base64" in result.output
     assert "flag{b64_metadata}" in result.output
 
+# {{{ test_parser_factory_and_classes
+def test_parser_factory_and_classes():
+    """
+    Verifies that ParserFactory selects the correct parser subclass and
+    that individual FormatParser subclasses behave correctly.
+    """
+    from ctf.forensics import ParserFactory, JpegParser, PngParser, GifParser, FallbackParser
+    
+    # Assert JPEG
+    jpeg_parser = ParserFactory.get_parser(b"\xff\xd8\xff\xe0\x00\x10JFIF")
+    assert isinstance(jpeg_parser, JpegParser)
+    
+    # Assert PNG
+    png_parser = ParserFactory.get_parser(b"\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR")
+    assert isinstance(png_parser, PngParser)
+    
+    # Assert GIF
+    gif_parser = ParserFactory.get_parser(b"GIF89a\x01\x00\x01\x00")
+    assert isinstance(gif_parser, GifParser)
+    
+    # Assert Fallback
+    fallback_parser = ParserFactory.get_parser(b"MZ\x90\x00\x03\x00\x00\x00")
+    assert isinstance(fallback_parser, FallbackParser)
+    assert fallback_parser.parse_physical(b"") == {}
+    assert fallback_parser.get_comment(b"") == ""
+    assert fallback_parser.get_exif_tags(b"") == {}
+# }}}
+
+