# Upload filenames the filesystem cannot hold. Two reached open() and raised,
# a 500 with the booth torn down (r3 heid bug hunt, hulda, 2026-09-24): a NUL,
# and a name over NAME_MAX (255 BYTES) that a 200-CHARACTER cap let through.
# Every row is a change tests/test_booth.py claims to forbid.

unit = "upload names the filesystem can hold"

[[mutation]]
label = "a NUL in an upload name reaches open() (ValueError, a 500)"
file = "booth/app.py"
test = "tests/test_booth.py::test_upload_a_nul_in_a_filename_never_500s"
old = '''
    base = (name or "").replace("\x00", "").replace("\\", "/").split("/")[-1].strip()'''
new = '''
    base = (name or "").replace("\\", "/").split("/")[-1].strip()'''

[[mutation]]
label = "the NUL is stripped after the dot rule (a NUL shields a leading dot)"
file = "booth/app.py"
test = "tests/test_booth.py::test_safe_upload_name_drops_nul_before_the_dot_rule"
old = '''
    base = (name or "").replace("\x00", "").replace("\\", "/").split("/")[-1].strip()
    base = base.lstrip(".")  # a leading dot would hide the file from every listing'''
new = '''
    base = (name or "").replace("\\", "/").split("/")[-1].strip()
    base = base.lstrip(".").replace("\x00", "")  # a leading dot would hide the file from every listing'''

[[mutation]]
label = "the cap counts characters, not bytes (ENAMETOOLONG, a 500)"
file = "booth/app.py"
test = "tests/test_booth.py::test_upload_a_name_over_name_max_in_bytes_never_500s"
old = '''
    base = (head.encode("utf-8", "surrogatepass")[:room]
            + tail.encode("utf-8", "surrogatepass")).decode("utf-8", "ignore")'''
new = '''
    base = base[:200]'''

[[mutation]]
label = "the cut comes out of the whole name (a long .png stops being an image)"
file = "booth/app.py"
test = "tests/test_booth.py::test_safe_upload_name_keeps_the_extension_through_the_cut"
old = '''
    head = stem if tail else base'''
new = '''
    head, tail = base, ""'''