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        <textarea name='content' rows='20' cols='100'>&lt;?php

namespace GuzzleHttp\Tests\Psr7;

use GuzzleHttp\Psr7;
use GuzzleHttp\Psr7\MultipartStream;

class MultipartStreamTest extends BaseTest
{
    public function testCreatesDefaultBoundary()
    {
        $b = new MultipartStream();
        self::assertNotEmpty($b-&gt;getBoundary());
    }

    public function testCanProvideBoundary()
    {
        $b = new MultipartStream([], 'foo');
        self::assertSame('foo', $b-&gt;getBoundary());
    }

    public function testIsNotWritable()
    {
        $b = new MultipartStream();
        self::assertFalse($b-&gt;isWritable());
    }

    public function testCanCreateEmptyStream()
    {
        $b = new MultipartStream();
        $boundary = $b-&gt;getBoundary();
        self::assertSame(&quot;--{$boundary}--\r\n&quot;, $b-&gt;getContents());
        self::assertSame(strlen($boundary) + 6, $b-&gt;getSize());
    }

    public function testValidatesFilesArrayElement()
    {
        $this-&gt;expectExceptionGuzzle('InvalidArgumentException');

        new MultipartStream([['foo' =&gt; 'bar']]);
    }

    public function testEnsuresFileHasName()
    {
        $this-&gt;expectExceptionGuzzle('InvalidArgumentException');

        new MultipartStream([['contents' =&gt; 'bar']]);
    }

    public function testSerializesFields()
    {
        $b = new MultipartStream([
            [
                'name'     =&gt; 'foo',
                'contents' =&gt; 'bar'
            ],
            [
                'name' =&gt; 'baz',
                'contents' =&gt; 'bam'
            ]
        ], 'boundary');
        self::assertSame(
            &quot;--boundary\r\nContent-Disposition: form-data; name=\&quot;foo\&quot;\r\nContent-Length: 3\r\n\r\n&quot;
            . &quot;bar\r\n--boundary\r\nContent-Disposition: form-data; name=\&quot;baz\&quot;\r\nContent-Length: 3&quot;
            . &quot;\r\n\r\nbam\r\n--boundary--\r\n&quot;,
            (string) $b
        );
    }

    public function testSerializesNonStringFields()
    {
        $b = new MultipartStream([
            [
                'name'     =&gt; 'int',
                'contents' =&gt; (int) 1
            ],
            [
                'name' =&gt; 'bool',
                'contents' =&gt; (boolean) false
            ],
            [
                'name' =&gt; 'bool2',
                'contents' =&gt; (boolean) true
            ],
            [
                'name' =&gt; 'float',
                'contents' =&gt; (float) 1.1
            ]
        ], 'boundary');
        self::assertSame(
            &quot;--boundary\r\nContent-Disposition: form-data; name=\&quot;int\&quot;\r\nContent-Length: 1\r\n\r\n&quot;
            . &quot;1\r\n--boundary\r\nContent-Disposition: form-data; name=\&quot;bool\&quot;\r\n\r\n\r\n--boundary&quot;
            . &quot;\r\nContent-Disposition: form-data; name=\&quot;bool2\&quot;\r\nContent-Length: 1\r\n\r\n&quot;
            . &quot;1\r\n--boundary\r\nContent-Disposition: form-data; name=\&quot;float\&quot;\r\nContent-Length: 3&quot;
            . &quot;\r\n\r\n1.1\r\n--boundary--\r\n&quot;,
            (string) $b
        );
    }

    public function testSerializesFiles()
    {
        $f1 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('foo'), [
            'getMetadata' =&gt; function () {
                return '/foo/bar.txt';
            }
        ]);

        $f2 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('baz'), [
            'getMetadata' =&gt; function () {
                return '/foo/baz.jpg';
            }
        ]);

        $f3 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('bar'), [
            'getMetadata' =&gt; function () {
                return '/foo/bar.gif';
            }
        ]);

        $b = new MultipartStream([
            [
                'name'     =&gt; 'foo',
                'contents' =&gt; $f1
            ],
            [
                'name' =&gt; 'qux',
                'contents' =&gt; $f2
            ],
            [
                'name'     =&gt; 'qux',
                'contents' =&gt; $f3
            ],
        ], 'boundary');

        $expected = &lt;&lt;&lt;EOT
--boundary
Content-Disposition: form-data; name=&quot;foo&quot;; filename=&quot;bar.txt&quot;
Content-Length: 3
Content-Type: text/plain

foo
--boundary
Content-Disposition: form-data; name=&quot;qux&quot;; filename=&quot;baz.jpg&quot;
Content-Length: 3
Content-Type: image/jpeg

baz
--boundary
Content-Disposition: form-data; name=&quot;qux&quot;; filename=&quot;bar.gif&quot;
Content-Length: 3
Content-Type: image/gif

bar
--boundary--

EOT;

        self::assertSame($expected, str_replace(&quot;\r&quot;, '', $b));
    }

    public function testSerializesFilesWithCustomHeaders()
    {
        $f1 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('foo'), [
            'getMetadata' =&gt; function () {
                return '/foo/bar.txt';
            }
        ]);

        $b = new MultipartStream([
            [
                'name' =&gt; 'foo',
                'contents' =&gt; $f1,
                'headers'  =&gt; [
                    'x-foo' =&gt; 'bar',
                    'content-disposition' =&gt; 'custom'
                ]
            ]
        ], 'boundary');

        $expected = &lt;&lt;&lt;EOT
--boundary
x-foo: bar
content-disposition: custom
Content-Length: 3
Content-Type: text/plain

foo
--boundary--

EOT;

        self::assertSame($expected, str_replace(&quot;\r&quot;, '', $b));
    }

    public function testSerializesFilesWithCustomHeadersAndMultipleValues()
    {
        $f1 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('foo'), [
            'getMetadata' =&gt; function () {
                return '/foo/bar.txt';
            }
        ]);

        $f2 = Psr7\FnStream::decorate(Psr7\Utils::streamFor('baz'), [
            'getMetadata' =&gt; function () {
                return '/foo/baz.jpg';
            }
        ]);

        $b = new MultipartStream([
            [
                'name'     =&gt; 'foo',
                'contents' =&gt; $f1,
                'headers'  =&gt; [
                    'x-foo' =&gt; 'bar',
                    'content-disposition' =&gt; 'custom'
                ]
            ],
            [
                'name'     =&gt; 'foo',
                'contents' =&gt; $f2,
                'headers'  =&gt; ['cOntenT-Type' =&gt; 'custom'],
            ]
        ], 'boundary');

        $expected = &lt;&lt;&lt;EOT
--boundary
x-foo: bar
content-disposition: custom
Content-Length: 3
Content-Type: text/plain

foo
--boundary
cOntenT-Type: custom
Content-Disposition: form-data; name=&quot;foo&quot;; filename=&quot;baz.jpg&quot;
Content-Length: 3

baz
--boundary--

EOT;

        self::assertSame($expected, str_replace(&quot;\r&quot;, '', $b));
    }
}
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