92 lines
2.4 KiB
PHP
92 lines
2.4 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Phpml\Tests\Math;
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use Phpml\Math\Set;
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use PHPUnit\Framework\TestCase;
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class SetTest extends TestCase
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{
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public function testUnion(): void
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{
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$union = Set::union(new Set([3, 1]), new Set([3, 2, 2]));
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self::assertEquals(new Set([1, 2, 3]), $union);
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self::assertEquals(3, $union->cardinality());
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}
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public function testIntersection(): void
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{
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$intersection = Set::intersection(new Set(['C', 'A']), new Set(['B', 'C']));
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self::assertEquals(new Set(['C']), $intersection);
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self::assertEquals(1, $intersection->cardinality());
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}
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public function testDifference(): void
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{
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$difference = Set::difference(new Set(['C', 'A', 'B']), new Set(['A']));
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self::assertEquals(new Set(['B', 'C']), $difference);
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self::assertEquals(2, $difference->cardinality());
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}
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public function testPower(): void
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{
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$power = Set::power(new Set(['A', 'B']));
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self::assertEquals([new Set(), new Set(['A']), new Set(['B']), new Set(['A', 'B'])], $power);
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self::assertCount(4, $power);
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}
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public function testCartesian(): void
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{
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$cartesian = Set::cartesian(new Set(['A']), new Set([1, 2]));
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self::assertEquals([new Set(['A', 1]), new Set(['A', 2])], $cartesian);
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self::assertCount(2, $cartesian);
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}
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public function testContains(): void
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{
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$set = new Set(['B', 'A', 2, 1]);
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self::assertTrue($set->contains('B'));
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self::assertTrue($set->containsAll(['A', 'B']));
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self::assertFalse($set->contains('C'));
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self::assertFalse($set->containsAll(['A', 'B', 'C']));
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}
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public function testRemove(): void
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{
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$set = new Set(['B', 'A', 2, 1]);
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self::assertEquals((new Set([1, 2, 2, 2, 'B']))->toArray(), $set->remove('A')->toArray());
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}
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public function testAdd(): void
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{
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$set = new Set(['B', 'A', 2, 1]);
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$set->addAll(['foo', 'bar']);
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self::assertEquals(6, $set->cardinality());
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}
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public function testEmpty(): void
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{
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$set = new Set([1, 2]);
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$set->removeAll([2, 1]);
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self::assertEquals(new Set(), $set);
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self::assertTrue($set->isEmpty());
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}
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public function testToArray(): void
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{
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$set = new Set([1, 2, 2, 3, 'A', false, '', 1.1, -1, -10, 'B']);
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self::assertEquals([-10, '', -1, 'A', 'B', 1, 1.1, 2, 3], $set->toArray());
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}
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}
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