# tests/forensics/test_parsers.py
# {{{ imports
from ctf.forensics import ParserFactory, JpegParser, PngParser, GifParser, FallbackParser
# }}}

# {{{ 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.
    """
    # 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"") == {}
# }}}