From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: Test (#4) * update * moved content in subdir * rename file * add test setup * add test setup * add github action * automaticly test all cpp files * timeout after 10s * setulimit and dont zero memory * test build pdf * install latexmk * update * update * ngerman * fonts * removed old code * add first test * added tests * test in sorted order * more tests * simplified test * more tests * fix suffix tree * fixes and improvements * done ust lst directly * fix swap * add links to pdf * fix constants * add primorial * add comment * various improvements * more tests * added missing stuf * more tests * fix tests * more tests * more tests * more tests * fix recursion? * test trie * more tests * only use python temporarily for listings * only use python temporarily for listings * more tests * fix longestCommonSubstring * more tests * more tests * made code more similiar * fix? * more tests * more tests * more tests * add ahoCorasick test + limit 4GB stack size * more tests * fix test * add additional test * more tests * more tests * fix? * better fix * fix virtual tree * more tests * more tests * recursive closest pair * more tests * decrease limit * new tests * more tests * fix name * more tests * add test * new test * more tests * more tests * more tests * more tests * new test and content * new code * new code * larger tests * fix and test * new test * new test * update pdf * remove comments * new test * more tests * more testcases * more tests * increased limit * more tests * more tests * more tests * new tests * more tests * shortened code * new test * add basic tests for bigint * more tests * removed old files * new test * ignore some files * more auto more ccw * fix test * more tests * fix * new tests * more tests * more tests * stronger test * actually verify delaunay... * more tests * fix header * more tests * run tests parallel? * test parralel? * add --missing * separate workflows * test * is the pdf checked? * separate workflows * fix workflow * more workflows --------- Co-authored-by: Yidi --- test/geometry/antipodalPoints.cpp | 70 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 test/geometry/antipodalPoints.cpp (limited to 'test/geometry/antipodalPoints.cpp') diff --git a/test/geometry/antipodalPoints.cpp b/test/geometry/antipodalPoints.cpp new file mode 100644 index 0000000..d20dfb6 --- /dev/null +++ b/test/geometry/antipodalPoints.cpp @@ -0,0 +1,70 @@ +#include "../util.h" +constexpr ll EPS = 0; +#define double ll +#define polar polar +#include +#undef polar +#undef double +#include +#include "../geometry.h" + +vector> naive(vector ps) { + ll n = sz(ps); + auto test = [&](int i, int j){ + if (dot(ps[j] - ps[i], ps[i - 1] - ps[i]) <= 0) return false; + if (dot(ps[j] - ps[i], ps[i + 1] - ps[i]) <= 0) return false; + return true; + }; + ps.push_back(ps[0]); + ps.push_back(ps[1]); + vector> res; + for (ll i = 1; i <= n; i++) { + for (ll j = 1; j < i; j++) { + if (test(i, j) && test(j, i)) res.emplace_back(i % n, j % n); + } + } + return res; +} + +void stress_test(ll range) { + ll queries = 0; + for (int tries = 0; tries < 100'000; tries++) { + int n = Random::integer(3, 30); + auto ps = Random::convex(n, range); + + auto got = antipodalPoints(ps); + for (auto& [a, b] : got) if (a > b) swap(a, b); + sort(all(got)); + + auto expected = naive(ps); + for (auto& [a, b] : expected) if (a > b) swap(a, b); + + for (auto x : expected) { + auto it = lower_bound(all(got), x); + if (it == got.end() || *it != x) cerr << "error" << FAIL; + } + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 99'000; +void performance_test() { + timer t; + + auto ps = Random::convex(N, 1'000'000'000); + + t.start(); + auto got = antipodalPoints(ps); + t.stop(); + + hash_t hash = sz(got); + if (t.time > 50) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + stress_test(100); + stress_test(1'000'000'000); + performance_test(); +} -- cgit v1.2.3