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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Framework\Constraint;
use function acos;
use function log;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\Small;
use PHPUnit\Framework\TestCase;
#[CoversClass(IsNan::class)]
#[CoversClass(Constraint::class)]
#[Small]
final class IsNanTest extends TestCase
{
public function testCanBeEvaluated(): void
{
$constraint = new IsNan;
$this->assertTrue($constraint->evaluate(acos(2), returnResult: true));
$this->assertFalse($constraint->evaluate(log(0), returnResult: true));
$this->assertFalse($constraint->evaluate(1, returnResult: true));
}
public function testCanBeRepresentedAsString(): void
{
$this->assertSame('is nan', (new IsNan)->toString());
}
public function testIsCountable(): void
{
$this->assertCount(1, (new IsNan));
}
}
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