def METHOD_NAME(rootdir):
    files = get_matching_files(rootdir / "test-root", exclude_patterns=["halibut/**"])
    assert sorted(files) == [
        'Makefile', '_templates/contentssb.html', '_templates/customsb.html',
        '_templates/layout.html', 'autodoc.txt', 'autodoc_target.py', 'bom.txt', 'conf.py',
        'extapi.txt', 'extensions.txt', 'file_with_special_#_chars.xyz', 'footnote.txt',
        'images.txt', 'img.foo.png', 'img.gif', 'img.pdf', 'img.png', 'includes.txt',
        'index.txt', 'lists.txt', 'literal.inc', 'literal_orig.inc', 'markup.txt', 'math.txt',
        'objects.txt', 'otherext.foo', 'parsermod.py', 'quotes.inc', 'rimg.png',
        'special/api.h', 'special/code.py', 'subdir/excluded.txt', 'subdir/images.txt',
        'subdir/img.png', 'subdir/include.inc', 'subdir/includes.txt', 'subdir/simg.png',
        'svgimg.pdf', 'svgimg.svg', 'tabs.inc', 'test.inc', 'wrongenc.inc',
    ]