mirror of https://github.com/catchorg/Catch2.git
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
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#!/usr/bin/env python3
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import subprocess
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import sys
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import xml.etree.ElementTree as ET
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def list_tests(self_test_exe, tags, rng_seed):
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cmd = [self_test_exe, '--reporter', 'xml', '--list-tests', '--order', 'rand',
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'--rng-seed', str(rng_seed)]
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tags_arg = ','.join('[{}]'.format(t) for t in tags)
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if tags_arg:
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cmd.append(tags_arg + '~[.]')
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process = subprocess.Popen(
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cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = process.communicate()
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if stderr:
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raise RuntimeError("Unexpected error output:\n" + process.stderr)
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root = ET.fromstring(stdout)
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result = [elem.text for elem in root.findall('./TestCase/Name')]
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if len(result) < 2:
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raise RuntimeError("Unexpectedly few tests listed (got {})".format(
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len(result)))
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return result
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def check_is_sublist_of(shorter, longer):
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assert len(shorter) < len(longer)
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assert len(set(longer)) == len(longer)
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indexes_in_longer = {s: i for i, s in enumerate(longer)}
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for s1, s2 in zip(shorter, shorter[1:]):
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assert indexes_in_longer[s1] < indexes_in_longer[s2], (
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'{} comes before {} in longer list.\n'
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'Longer: {}\nShorter: {}'.format(s2, s1, longer, shorter))
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def main():
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self_test_exe, = sys.argv[1:]
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list_one_tag = list_tests(self_test_exe, ['generators'], 1)
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list_two_tags = list_tests(self_test_exe, ['generators', 'matchers'], 1)
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list_all = list_tests(self_test_exe, [], 1)
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# First, verify that restricting to a subset yields the same order
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check_is_sublist_of(list_two_tags, list_all)
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check_is_sublist_of(list_one_tag, list_two_tags)
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# Second, verify that different seeds yield different orders
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num_seeds = 100
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seeds = range(1, num_seeds + 1) # Avoid zero since that's special
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lists = {tuple(list_tests(self_test_exe, [], seed)) for seed in seeds}
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assert len(lists) == num_seeds, (
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'Got {} distict lists from {} seeds'.format(len(lists), num_seeds))
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if __name__ == '__main__':
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sys.exit(main())
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