endtoend-test-psl/tests/Psl/Vec/RangeTest.php
2021-02-13 20:16:20 +01:00

38 lines
1.2 KiB
PHP

<?php
declare(strict_types=1);
namespace Psl\Tests\Vec;
use PHPUnit\Framework\TestCase;
use Psl;
use Psl\Vec;
final class RangeTest extends TestCase
{
public function testRange(): void
{
static::assertSame([1], Vec\values(Vec\range(1, 1, 1)));
static::assertSame([0, 1, 2, 3, 4, 5], Vec\values(Vec\range(0, 5)));
static::assertSame([5, 4, 3, 2, 1, 0], Vec\values(Vec\range(5, 0)));
static::assertSame([0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0], Vec\values(Vec\range(0.0, 3.0, 0.5)));
static::assertSame([3.0, 2.5, 2.0, 1.5, 1.0, 0.5, 0.0], Vec\values(Vec\range(3.0, 0.0, -0.5)));
}
public function testRandomThrowsIfEndIsGreaterThanStartAndStepIsNegative(): void
{
$this->expectException(Psl\Exception\InvariantViolationException::class);
$this->expectExceptionMessage('If $start < $end, then $step must be positive or null.');
Vec\range(0, 10, -2);
}
public function testRandomThrowsIfStartIsGreaterThanEndAndStepIsPositive(): void
{
$this->expectException(Psl\Exception\InvariantViolationException::class);
$this->expectExceptionMessage('If $start > $end, then $step must be negative or null.');
Vec\range(20, 10, 2);
}
}