diff options
| author | mzuenni <mzuenni@users.noreply.github.com> | 2024-07-28 22:54:40 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-28 22:54:40 +0200 |
| commit | 8d11c6c8213f46f0fa19826917c255edd5d43cb1 (patch) | |
| tree | 96d75baff33d5a04b5a60f1a41f514a26c716874 /test/graph/centroid.cpp | |
| parent | 8c33b4e0d3030cfed17fc64b4fe41133339f6d87 (diff) | |
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 <noob999noob999@gmail.com>
Diffstat (limited to 'test/graph/centroid.cpp')
| -rw-r--r-- | test/graph/centroid.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/test/graph/centroid.cpp b/test/graph/centroid.cpp new file mode 100644 index 0000000..41d9d0f --- /dev/null +++ b/test/graph/centroid.cpp @@ -0,0 +1,77 @@ +#include "../util.h" +vector<vector<int>> adj; +#include <graph/centroid.cpp> + +int subtreeSize(int c, int p) { + int res = 1; + for (int x : adj[c]) { + if (x == p) continue; + res += subtreeSize(x, c); + } + return res; +} + +vector<int> naive() { + vector<int> res; + for (int i = 0; i < sz(adj); i++) { + bool isCentroid = true; + for (int j : adj[i]) isCentroid &= 2*subtreeSize(j, i) <= sz(adj); + if (isCentroid) res.push_back(i); + } + return res; +} + +void stress_test() { + ll queries = 0; + for (int tries = 0; tries < 100'000; tries++) { + int n = Random::integer<int>(1, 50); + Graph<NoData> g(n); + g.tree(); + + adj.assign(n, {}); + g.forEdges([&](int a, int b){ + adj[a].push_back(b); + adj[b].push_back(a); + }); + + auto expected = naive(); + sort(all(expected)); + + for (int i = 0; i < n; i++) { + auto [a, b] = find_centroid(i); + vector<int> got; + if (a >= 0) got.push_back(a); + if (b >= 0) got.push_back(b); + sort(all(got)); + + if (got != expected) cerr << "error" << FAIL; + } + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 2'000'000; +void performance_test() { + timer t; + Graph<NoData> g(N); + g.tree(); + + adj.assign(N, {}); + g.forEdges([&](int a, int b){ + adj[a].push_back(b); + adj[b].push_back(a); + }); + + t.start(); + auto [gotA, gotB] = find_centroid(); + t.stop(); + hash_t hash = gotA + gotB; + 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(); +} |