[testlib] Validators

Правка en2, от I_love_Hoang_Yen, 2015-06-09 12:04:31

If you have written some tasks, and have prepared test cases, you will probably experience the terrible feeling that some test cases may be invalid (meaning it does not agree with the constraints in problem statement): upper bound can be violated, your graph not satisfied connectivity requirements or is not at tree. It is a reasonable to feel that way. Even experienced problem setters make mistakes sometimes (for example, in the pretigious ACM ICPC World final 2007).

The validator in testlib is a good tool to help you prevent such mistakes. It is very easy to use.

Example

Following is the validator of validator, which I used in a problem I prepared: 100541A - Stock Market:

#include "testlib.h"
#include <bits/stdc++.h>
using namespace std;

int main() {
    registerValidation();
    int test = inf.readInt(1, 10);
    inf.readEoln();
    
    while (test--) {
        int n = inf.readInt(1, 100);
        inf.readChar(' ');
        int w = inf.readInt(1, 1000000);
        inf.readEoln();

        for(int i = 0; i < n; ++i) {
            inf.readInt(1, 1000);
            if (i < n-1) inf.readChar(' ');
            else inf.readEoln();
        }
    }

    inf.readEof();
    return 0;
}

List of available methods:

Following is the methods available:

  • registerValidation: this method must be called at the beginning of your code in order to use validator.
  • readInt(L, R): read an integer and check if it is in range [L, R]. Throw error if input is invalid.
  • readEof: read end of file. Throw error if end of file is not reached.
  • readEoln: read end of line. Throw error if next character is not end of line.
  • readChar(C): read a character

[more content to be added]

Теги testlib, validator, validators, polygon

История

 
 
 
 
Правки
 
 
  Rev. Язык Кто Когда Δ Комментарий
ru11 Русский KAN 2022-07-07 20:21:26 2128
en24 Английский KAN 2022-07-07 20:16:48 4201 Tiny change: 'alidation()` which d' -> 'alidation(argc, argv)` which d'
ru10 Русский KAN 2022-07-07 19:00:36 2066 added global methods
ru9 Русский KAN 2022-07-07 18:43:02 2171 updated functions
ru8 Русский MikeMirzayanov 2018-12-29 14:28:59 20 Мелкая правка: ' readLong(int L, int R)|Аналог' -> ' readLong(long long L, long long R)|Аналог'
ru7 Русский arsijo 2018-11-02 01:08:48 527
en23 Английский arsijo 2018-11-02 01:01:28 400
ru6 Русский Zlobober 2016-10-01 20:36:24 32
en22 Английский Zlobober 2016-02-24 02:54:05 32
en21 Английский I_love_Hoang_Yen 2015-06-18 14:09:58 20 Tiny change: ' readLong(int L, int R)|Same a' -> ' readLong(long long L, long long R)|Same a'
ru5 Русский riadwaw 2015-06-10 22:35:00 20
en20 Английский I_love_Hoang_Yen 2015-06-10 21:00:28 20
ru4 Русский MikeMirzayanov 2015-06-10 12:29:16 118
en19 Английский MikeMirzayanov 2015-06-10 12:27:46 410
en18 Английский PrinceOfPersia 2015-06-10 08:57:32 218
ru3 Русский MikeMirzayanov 2015-06-10 02:25:07 67
en17 Английский MikeMirzayanov 2015-06-10 02:24:34 67
ru2 Русский MikeMirzayanov 2015-06-10 02:20:24 3
ru1 Русский elena 2015-06-10 02:18:13 7940 Первая редакция перевода на Русский
en16 Английский elena 2015-06-10 01:13:44 30 Tiny change: 'inus sign), note that it will match '-0'.\n - *' -> 'inus sign).\n - *'
en15 Английский MikeMirzayanov 2015-06-09 17:33:29 1546
en14 Английский PrinceOfPersia 2015-06-09 17:16:10 56
en13 Английский I_love_Hoang_Yen 2015-06-09 14:08:48 125
en12 Английский I_love_Hoang_Yen 2015-06-09 14:06:24 246 Tiny change: '| Same as readChar(' ').|\n|void ' -> '| Same as `readChar(' ')`.|\n|void '
en11 Английский I_love_Hoang_Yen 2015-06-09 13:56:28 86 Update styling
en10 Английский I_love_Hoang_Yen 2015-06-09 13:53:23 1840 (published)
en9 Английский I_love_Hoang_Yen 2015-06-09 13:38:13 291
en8 Английский I_love_Hoang_Yen 2015-06-09 13:34:33 28 Tiny change: ' C/C++)|\n\n|readInt' -
en7 Английский I_love_Hoang_Yen 2015-06-09 13:01:14 3 Tiny change: 'readInt(), readIntege' -> 'readInt(),\nreadIntege'
en6 Английский I_love_Hoang_Yen 2015-06-09 12:54:26 2 Tiny change: ' in range [L, R].|\n|readS' -> ' in range $[L, R]$.|\n|readS'
en5 Английский I_love_Hoang_Yen 2015-06-09 12:54:01 60
en4 Английский I_love_Hoang_Yen 2015-06-09 12:52:57 1888
en3 Английский I_love_Hoang_Yen 2015-06-09 12:34:31 206
en2 Английский I_love_Hoang_Yen 2015-06-09 12:04:31 331
en1 Английский I_love_Hoang_Yen 2015-06-09 12:01:01 1478 Initial revision (saved to drafts)