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Filename : IsTypeTest.php
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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 PHPUnit\Framework\Assert;
use PHPUnit\Framework\ExpectationFailedException;
use PHPUnit\Framework\TestFailure;

/**
 * @small
 */
final class IsTypeTest extends ConstraintTestCase
{
    public function testConstraintIsType(): void
    {
        $constraint = Assert::isType('string');

        $this->assertFalse($constraint->evaluate(0, '', true));
        $this->assertTrue($constraint->evaluate('', '', true));
        $this->assertEquals('is of type "string"', $constraint->toString());
        $this->assertCount(1, $constraint);

        try {
            $constraint->evaluate(new \stdClass);
        } catch (ExpectationFailedException $e) {
            $this->assertStringMatchesFormat(
                <<<EOF
Failed asserting that stdClass Object &%x () is of type "string".

EOF
                ,
                $this->trimnl(TestFailure::exceptionToString($e))
            );

            return;
        }

        $this->fail();
    }

    public function testConstraintIsType2(): void
    {
        $constraint = Assert::isType('string');

        try {
            $constraint->evaluate(new \stdClass, 'custom message');
        } catch (ExpectationFailedException $e) {
            $this->assertStringMatchesFormat(
                <<<EOF
custom message
Failed asserting that stdClass Object &%x () is of type "string".

EOF
                ,
                $this->trimnl(TestFailure::exceptionToString($e))
            );

            return;
        }

        $this->fail();
    }

    /**
     * @dataProvider resources
     */
    public function testConstraintIsResourceTypeEvaluatesCorrectlyWithResources($resource): void
    {
        $constraint = Assert::isType('resource');

        $this->assertTrue($constraint->evaluate($resource, '', true));

        if (\is_resource($resource)) {
            @\fclose($resource);
        }
    }

    public function resources()
    {
        $fh = \fopen(__FILE__, 'r');
        \fclose($fh);

        return [
            'open resource'     => [\fopen(__FILE__, 'r')],
            'closed resource'   => [$fh],
        ];
    }

    public function testIterableTypeIsSupported(): void
    {
        $constraint = Assert::isType('iterable');

        $this->assertFalse($constraint->evaluate('', '', true));
        $this->assertTrue($constraint->evaluate([], '', true));
        $this->assertEquals('is of type "iterable"', $constraint->toString());
    }

    public function testTypeCanBeNull(): void
    {
        $constraint = Assert::isType('null');

        $this->assertNull($constraint->evaluate(null));
        $this->assertEquals('is of type "null"', $constraint->toString());
    }

    public function testTypeCanNotBeAnUndefinedOne(): void
    {
        try {
            Assert::isType('diverse');
        } catch (\PHPUnit\Framework\Exception $e) {
            $this->assertEquals(
                <<<EOF
PHPUnit\Framework\Exception: Type specified for PHPUnit\Framework\Constraint\IsType <diverse> is not a valid type.

EOF
                ,
                TestFailure::exceptionToString($e)
            );
        }
    }

    /**
     * Removes spaces in front of newlines
     *
     * @param string $string
     *
     * @return string
     */
    private function trimnl($string)
    {
        return \preg_replace('/[ ]*\n/', "\n", $string);
    }
}