test adding condorcet vote

2022-09-21 12:39:11 +02:00
parent 1e8adfa5d5
commit 0a30f39eb4
349 changed files with 36658 additions and 0 deletions
--- a/include/Condorcet/Tests/src/Algo/Tools/CombinationsTest.php
+++ b/include/Condorcet/Tests/src/Algo/Tools/CombinationsTest.php
@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CondorcetPHP\Condorcet\Tests\Algo\Tools;
+
+use CondorcetPHP\Condorcet\Algo\Tools\Combinations;
+use CondorcetPHP\Condorcet\Throwable\Internal\{CondorcetInternalException, IntegerOverflowException};
+use PHPUnit\Framework\TestCase;
+
+class CombinationsTest extends TestCase
+{
+    protected function tearDown(): void
+    {
+        Combinations::$useBigIntegerIfAvailable = true;
+    }
+
+    public function testCountPossibleCombinationsResultWithBigInt(): void
+    {
+        // Usual permutation for CPO STV 11 candidates and 3 seats left
+        self::assertSame(
+            13_530,
+            Combinations::getPossibleCountOfCombinations(
+                count: Combinations::getPossibleCountOfCombinations(
+                    count: 11,
+                    length: 3
+                ),
+                length: 2
+            )
+        );
+
+        self::assertSame(2_598_960, Combinations::getPossibleCountOfCombinations(52, 5)); // Card Game
+
+        self::assertSame(4_367_914_309_753_280, Combinations::getPossibleCountOfCombinations(78, 15)); // Tarot Card Game - 5 players
+        self::assertSame(212_566_476_905_162_380, Combinations::getPossibleCountOfCombinations(78, 18)); // Tarot Card Game - 4 players
+
+        $this->expectException(IntegerOverflowException::class);
+        Combinations::getPossibleCountOfCombinations(78, 24); // Tarot Card Game - 3 players - Result is 79_065_487_387_985_398_300, it's above PHP_MAX_INT
+    }
+
+    public function testCountPossibleCombinationsResultWithoutBigInt(): void
+    {
+        Combinations::$useBigIntegerIfAvailable = false;
+
+        // Usual permutation for CPO STV 11 candidates and 3 seats left
+        self::assertSame(
+            13_530,
+            Combinations::getPossibleCountOfCombinations(
+                count: Combinations::getPossibleCountOfCombinations(
+                    count: 11,
+                    length: 3
+                ),
+                length: 2
+            )
+        );
+
+        self::assertSame(2_598_960, Combinations::getPossibleCountOfCombinations(52, 5)); // Card Game - Result is - 4_367_914_309_753_280
+
+        $this->expectException(IntegerOverflowException::class);
+        Combinations::getPossibleCountOfCombinations(78, 15); // Tarot Card Game - 5 players -  - Result is 4_367_914_309_753_280, it's NOT above PHP_MAX_INT but the intermediate calculations are.
+    }
+
+    public function testCountPossibleCombinationsBadParameters1(): void
+    {
+        $this->expectException(CondorcetInternalException::class);
+
+        Combinations::getPossibleCountOfCombinations(2, 3);
+    }
+
+    public function testIntegerOverflow(): void
+    {
+        $this->expectException(IntegerOverflowException::class);
+
+        Combinations::getPossibleCountOfCombinations(\PHP_INT_MAX - 1, 2);
+    }
+}