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/string/duval.cpp | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 test/string/duval.cpp (limited to 'test/string/duval.cpp') diff --git a/test/string/duval.cpp b/test/string/duval.cpp new file mode 100644 index 0000000..58b4a44 --- /dev/null +++ b/test/string/duval.cpp @@ -0,0 +1,85 @@ +#include "../util.h" +#pragma GCC diagnostic ignored "-Wreturn-type" +#include + +constexpr int N = 20'000'000; + +bool isLyndon(string_view s) { + string t = string(s) + string(s); + for (ll i = 1; i < sz(s); i++) { + if (s >= t.substr(i, sz(s))) return false; + } + return !s.empty(); +} + +void stress_test_duval() { + ll queries = 0; + for (int i = 0; i < 10'000; i++) { + int n = Random::integer(1, 100); + auto s = Random::string(n, "abc"); + vector> got = duval(s); + if (got.empty()) cerr << "error: a" << FAIL; + if (got.front().first != 0) cerr << "error: b" << FAIL; + if (got.back().second != n) cerr << "error: c" << FAIL; + for (int j = 1; j < sz(got); j++) { + if (got[j - 1].second != got[j].first) cerr << "error: d" << FAIL; + } + for (auto [l, r] : got) { + if (!isLyndon(string_view(s).substr(l, r-l))) cerr << "error: e" << FAIL; + } + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +void performance_test_duval() { + timer t; + auto s = Random::string(N, "a") + Random::string(N, "ab") + Random::string(N, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$#"); + t.start(); + auto got = duval(s); + t.stop(); + hash_t hash = 0; + for (auto [l, r] : got) hash += l + r; + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int naive(string s) { + ll n = sz(s); + s += s; + int res = 0; + for (int i = 0; i < n; i++) { + if (string_view(s).substr(i, n) <= string_view(s).substr(res, n)) res = i; + } + return res; +} + +void stress_test_minrotation() { + ll queries = 0; + for (int i = 0; i < 10'000; i++) { + int n = Random::integer(1, 100); + auto s = Random::string(n, "abc"); + int got = minrotation(s); + auto expected = naive(s); + if (got != expected) cerr << s << ": got: " << got << ", expected: " << expected << FAIL; + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +void performance_test_minrotation() { + timer t; + auto s = Random::string(N, "a") + Random::string(N, "ab") + Random::string(N, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$#"); + t.start(); + hash_t hash = minrotation(s); + t.stop(); + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + stress_test_duval(); + performance_test_duval(); + stress_test_minrotation(); + performance_test_minrotation(); +} -- cgit v1.2.3