<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: StreamDecoratorTraitTest.php</h2><form method='post'>
        <textarea name='content' rows='20' cols='100'>&lt;?php

namespace GuzzleHttp\Tests\Psr7;

use GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\StreamDecoratorTrait;
use Psr\Http\Message\StreamInterface;

class Str implements StreamInterface
{
    use StreamDecoratorTrait;
}

/**
 * @covers GuzzleHttp\Psr7\StreamDecoratorTrait
 */
class StreamDecoratorTraitTest extends BaseTest
{
    /** @var StreamInterface */
    private $a;
    /** @var StreamInterface */
    private $b;
    /** @var resource */
    private $c;

    /**
     * @before
     */
    public function setUpTest()
    {
        $this-&gt;c = fopen('php://temp', 'r+');
        fwrite($this-&gt;c, 'foo');
        fseek($this-&gt;c, 0);
        $this-&gt;a = Psr7\Utils::streamFor($this-&gt;c);
        $this-&gt;b = new Str($this-&gt;a);
    }

    public function testCatchesExceptionsWhenCastingToString()
    {
        $s = $this-&gt;getMockBuilder('Psr\Http\Message\StreamInterface')
            -&gt;setMethods(['read'])
            -&gt;getMockForAbstractClass();
        $s-&gt;expects(self::once())
            -&gt;method('read')
            -&gt;will(self::throwException(new \Exception('foo')));
        $msg = '';
        set_error_handler(function ($errNo, $str) use (&amp;$msg) {
            $msg = $str;
        });
        echo new Str($s);
        restore_error_handler();
        $this-&gt;assertStringContainsStringGuzzle('foo', $msg);
    }

    public function testToString()
    {
        self::assertSame('foo', (string) $this-&gt;b);
    }

    public function testHasSize()
    {
        self::assertSame(3, $this-&gt;b-&gt;getSize());
    }

    public function testReads()
    {
        self::assertSame('foo', $this-&gt;b-&gt;read(10));
    }

    public function testCheckMethods()
    {
        self::assertSame($this-&gt;a-&gt;isReadable(), $this-&gt;b-&gt;isReadable());
        self::assertSame($this-&gt;a-&gt;isWritable(), $this-&gt;b-&gt;isWritable());
        self::assertSame($this-&gt;a-&gt;isSeekable(), $this-&gt;b-&gt;isSeekable());
    }

    public function testSeeksAndTells()
    {
        $this-&gt;b-&gt;seek(1);
        self::assertSame(1, $this-&gt;a-&gt;tell());
        self::assertSame(1, $this-&gt;b-&gt;tell());
        $this-&gt;b-&gt;seek(0);
        self::assertSame(0, $this-&gt;a-&gt;tell());
        self::assertSame(0, $this-&gt;b-&gt;tell());
        $this-&gt;b-&gt;seek(0, SEEK_END);
        self::assertSame(3, $this-&gt;a-&gt;tell());
        self::assertSame(3, $this-&gt;b-&gt;tell());
    }

    public function testGetsContents()
    {
        self::assertSame('foo', $this-&gt;b-&gt;getContents());
        self::assertSame('', $this-&gt;b-&gt;getContents());
        $this-&gt;b-&gt;seek(1);
        self::assertSame('oo', $this-&gt;b-&gt;getContents());
    }

    public function testCloses()
    {
        $this-&gt;b-&gt;close();
        self::assertFalse(is_resource($this-&gt;c));
    }

    public function testDetaches()
    {
        $this-&gt;b-&gt;detach();
        self::assertFalse($this-&gt;b-&gt;isReadable());
    }

    public function testWrapsMetadata()
    {
        self::assertSame($this-&gt;b-&gt;getMetadata(), $this-&gt;a-&gt;getMetadata());
        self::assertSame($this-&gt;b-&gt;getMetadata('uri'), $this-&gt;a-&gt;getMetadata('uri'));
    }

    public function testWrapsWrites()
    {
        $this-&gt;b-&gt;seek(0, SEEK_END);
        $this-&gt;b-&gt;write('foo');
        self::assertSame('foofoo', (string) $this-&gt;a);
    }

    public function testThrowsWithInvalidGetter()
    {
        $this-&gt;expectExceptionGuzzle('UnexpectedValueException');

        $this-&gt;b-&gt;foo;
    }

    public function testThrowsWhenGetterNotImplemented()
    {
        $s = new BadStream();

        $this-&gt;expectExceptionGuzzle('BadMethodCallException');

        $s-&gt;stream;
    }
}

class BadStream
{
    use StreamDecoratorTrait;

    public function __construct()
    {
    }
}
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