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/sortAround.cpp | 83 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 test/geometry/sortAround.cpp (limited to 'test/geometry/sortAround.cpp') diff --git a/test/geometry/sortAround.cpp b/test/geometry/sortAround.cpp new file mode 100644 index 0000000..a27edc8 --- /dev/null +++ b/test/geometry/sortAround.cpp @@ -0,0 +1,83 @@ +#include "../util.h" +constexpr ll EPS = 0; +#define double ll +#define polar polar +#include +#undef polar +#undef double +#include + +//expected order: +//1 8 7 +//2 . 6 +//3 4 5 +void test_tiny() { + vector expected = { + {-1, 1}, + {-1, 0}, + {-1,-1}, + { 0,-1}, + { 1,-1}, + { 1, 0}, + { 1, 1}, + { 0, 1}, + }; + auto got = expected; + for (int i = 0; i < 100'000; i++) { + shuffle(all(got), Random::rng); + sortAround(0, got); + if (got != expected) cerr << "error" << FAIL; + } + cerr << "tested tiny" << endl; +} + +void stress_test(ll range) { + ll queries = 0; + for (int tries = 0; tries < 100'000; tries++) { + int n = Random::integer(2, 100); + auto ps = Random::points(n, -range, range); + + auto contains = [&](pt p){ + for (pt pp : ps) if (pp == p) return true; + return false; + }; + + pt c; + do { + c = Random::point(-range, range); + } while (contains(c)); + + sortAround(c, ps); + + auto isLeft = [&](pt p){return real(p - c) < 0 || (real(p - c) == 0 && imag(p - c) < 0);}; + auto isCCW = [&](pt a, pt b){return cross(c, a, b) > 0;}; + if (!is_partitioned(all(ps), isLeft)) cerr << "error 1" << FAIL; + auto mid = partition_point(all(ps), isLeft); + if (!is_sorted(ps.begin(), mid, isCCW)) cerr << "error 2" << FAIL; + if (!is_sorted(mid, ps.end(), isCCW)) cerr << "error 3" << FAIL; + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 2'000'000; +void performance_test() { + timer t; + auto ps = Random::points(N, -1'000'000'000, 1'000'000'000); + + t.start(); + sortAround(0, ps); + t.stop(); + + hash_t hash = 0; + for (pt p : ps) hash += real(p) * imag(p); + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + test_tiny(); + stress_test(100); + stress_test(1'000'000'000); + performance_test(); +} -- cgit v1.2.3