File: pathological-tests.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import re
import argparse
import sys
import platform
from prog import Prog
from timeit import default_timer as timer

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Run Markdown tests.')
    parser.add_argument('-p', '--program', dest='program', nargs='?', default=None,
            help='program to test')
    args = parser.parse_args(sys.argv[1:])

# list of pairs consisting of input and a regex that must match the output.
pathological = {
    # note - some pythons have limit of 65535 for {num-matches} in re.
    "U+0000":
            ("abc\u0000de\u0000",
            re.compile("abc\ufffd?de\ufffd?")),
    "U+FEFF (Unicode BOM)":
            ("\ufefffoo",
            re.compile("<p>foo</p>")),
    "nested strong emph":
            (("*a **a " * 65000) + "b" + (" a** a*" * 65000),
            re.compile("(<em>a <strong>a ){65000}b( a</strong> a</em>){65000}")),
    "many emph closers with no openers":
            (("a_ " * 65000),
            re.compile("(a[_] ){64999}a_")),
    "many emph openers with no closers":
            (("_a " * 65000),
            re.compile("(_a ){64999}_a")),
    "many 3-emph openers with no closers":
            (("a***" * 65000),
            re.compile("(a<em><strong>a</strong></em>){32500}")),
    "many link closers with no openers":
            (("a]" * 65000),
            re.compile("(a\]){65000}")),
    "many link openers with no closers":
            (("[a" * 65000),
            re.compile("(\[a){65000}")),
    "mismatched openers and closers":
            (("*a_ " * 50000),
            re.compile("([*]a[_] ){49999}[*]a_")),
    "openers and closers multiple of 3":
            (("a**b" + ("c* " * 50000)),
            re.compile("a[*][*]b(c[*] ){49999}c[*]")),
    "link openers and emph closers":
            (("[ a_" * 50000),
            re.compile("(\[ a_){50000}")),
    "hard link/emph case":
            ("**x [a*b**c*](d)",
            re.compile("\\*\\*x <a href=\"d\">a<em>b\\*\\*c</em></a>")),
    "nested brackets":
            (("[" * 50000) + "a" + ("]" * 50000),
            re.compile("\[{50000}a\]{50000}")),
    "nested block quotes":
            ((("> " * 50000) + "a"),
            re.compile("(<blockquote>\r?\n){50000}")),
    "backticks":
            ("".join(map(lambda x: ("e" + "`" * x), range(1,1000))),
            re.compile("^<p>[e`]*</p>\r?\n$")),
    "many links":
            ("[t](/u) " * 50000,
            re.compile("(<a href=\"/u\">t</a> ?){50000}")),
    "many references":
            ("".join(map(lambda x: ("[" + str(x) + "]: u\n"), range(1,20000 * 16))) + "[0] " * 20000,
            re.compile("(\[0\] ){19999}")),
    "deeply nested lists":
            ("".join(map(lambda x: ("  " * x + "* a\n"), range(0,1000))),
            re.compile("<ul>\r?\n(<li>a<ul>\r?\n){999}<li>a</li>\r?\n</ul>\r?\n(</li>\r?\n</ul>\r?\n){999}")),
    "many html openers and closers":
            (("<>" * 50000),
            re.compile("(&lt;&gt;){50000}")),
    "many html proc. inst. openers":
            (("x" + "<?" * 50000),
            re.compile("x(&lt;\\?){50000}")),
    "many html CDATA openers":
            (("x" + "<![CDATA[" * 50000),
            re.compile("x(&lt;!\\[CDATA\\[){50000}")),
    "many backticks and escapes":
            (("\\``" * 50000),
            re.compile("(``){50000}")),
    "many broken link titles":
            (("[ (](" * 50000),
            re.compile("(\[ \(\]\(){50000}")),
    "broken thematic break":
            (("* " * 50000 + "a"),
            re.compile("<ul>\r?\n(<li><ul>\r?\n){49999}<li>a</li>\r?\n</ul>\r?\n(</li>\r?\n</ul>\r?\n){49999}")),
    "nested invalid link references":
            (("[" * 50000 + "]" * 50000 + "\n\n[a]: /b"),
            re.compile("\[{50000}\]{50000}")),
    "many broken permissive autolinks":
            (("www._" * 50000 + "x"),
            re.compile("<p>(www._){50000}x</p>"),
            "--fpermissive-www-autolinks"),
    "huge table":
            (("th|" * 10000 + "\n" + "-|" * 10000 + "\n" + "td\n" * 10000),
            re.compile(""),
            "--ftables")
}

whitespace_re = re.compile('/s+/')
passed = 0
errored = 0
failed = 0

#print("Testing pathological cases:")
for description in pathological:
    if len(pathological[description]) == 2:
        (inp, regex) = pathological[description]
        prog = Prog(cmdline=args.program)
    else:
        (inp, regex, default_options) = pathological[description]
        prog = Prog(cmdline=args.program, default_options=default_options)

    start = timer()
    [rc, actual, err] = prog.to_html(inp)
    end = timer()
    if rc != 0:
        errored += 1
        print('{:35} [ERRORED (exit code {})]'.format(description, rc))
        print(err)
    elif regex.search(actual):
        print('{:35} [PASSED] {:.3f} secs'.format(description, end-start))
        passed += 1
    else:
        print('{:35} [FAILED]'.format(description))
        print(repr(actual))
        failed += 1

print("%d passed, %d failed, %d errored" % (passed, failed, errored))
if (failed == 0 and errored == 0):
    exit(0)
else:
    exit(1)