René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Improve test coverage for the math module","articleBody":"Sometimes input checks are missing (e.g. L989 of math_1 or L1023 of math_1a), sometimes exceptional cases are not tested (e.g. in fsum), some code is just inaccessible (like L3519 in the perm_comb_small() helper).  See attached coverage report (for `./python -m test test_math`).\r\n\r\nI believe, everything should be tested (except for memory errors and similar special cases).\r\n\r\n[lcov-report.zip](https://github.com/python/cpython/files/11014453/lcov-report.zip)\r\n\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-102523\n* gh-110000\n* gh-111930\n* gh-112029\n* gh-112030\n* gh-112041\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/skirpichev","@type":"Person","name":"skirpichev"},"datePublished":"2023-03-20T05:45:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/102837/cpython/issues/102837"}