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/suffixArray.cpp | 61 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 test/string/suffixArray.cpp (limited to 'test/string/suffixArray.cpp') diff --git a/test/string/suffixArray.cpp b/test/string/suffixArray.cpp new file mode 100644 index 0000000..4945d8e --- /dev/null +++ b/test/string/suffixArray.cpp @@ -0,0 +1,61 @@ +#include "../util.h" +#include + +vector naive(string_view s) { + vector SA(sz(s)); + iota(all(SA), 0); + sort(all(SA), [s](int a, int b){ + return s.substr(a) < s.substr(b); + }); + return SA; +} + +int lcp(string_view s, int x, int y) { + int res = 0; + while (x + res < sz(s) && y + res < sz(s) && s[x + res] == s[y + res]) res++; + return res; +} + +void stress_test() { + ll queries = 0; + for (int i = 0; i < 100; i++) { + int n = Random::integer(1, 100); + auto s = Random::string(n, "abc"); + SuffixArray sa(s); + vector got = sa.SA; + vector expected = naive(s); + vector SA(n); + if (got != expected) cerr << "error: SA" << FAIL; + got = sa.LCP; + swap(SA, expected); + for (int x = 0; x < n; x++) { + for (int y = 0; y < n; y++) { + int gotLCP = sa.lcp(x, y); + int expectedLCP = lcp(s, x, y); + if (gotLCP != expectedLCP) cerr << "error: lcp" << FAIL; + } + if (x > 0) expected[x] = lcp(s, SA[x-1], SA[x]); + } + if (got != expected) cerr << "error: LCP" << FAIL; + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 200'000; +void performance_test() { + timer t; + auto s = Random::string(N, "a") + Random::string(N, "ab") + Random::string(N, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$#"); + t.start(); + SuffixArray sa(s); + t.stop(); + hash_t hash = 0; + for (int i = 0; i < sz(sa.SA); i++) hash += i*sa.SA[i]; + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + stress_test(); + performance_test(); +} -- cgit v1.2.3