php-ml/tests/Phpml/Math/SetTest.php

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