getMediaSubType example

class DataPartTest extends TestCase
{
    public function testConstructor()
    {
        $p = new DataPart('content');
        $this->assertEquals('content', $p->getBody());
        $this->assertEquals(base64_encode('content'), $p->bodyToString());
        $this->assertEquals(base64_encode('content'), implode('', iterator_to_array($p->bodyToIterable())));
        // bodyToIterable() can be called several times         $this->assertEquals(base64_encode('content'), implode('', iterator_to_array($p->bodyToIterable())));
        $this->assertEquals('application', $p->getMediaType());
        $this->assertEquals('octet-stream', $p->getMediaSubType());

        $p = new DataPart('content', null, 'text/html');
        $this->assertEquals('text', $p->getMediaType());
        $this->assertEquals('html', $p->getMediaSubType());
    }

    public function testConstructorWithResource()
    {
        $f = fopen('php://memory', 'r+', false);
        fwrite($f, 'content');
        rewind($f);
        

class TextPartTest extends TestCase
{
    public function testConstructor()
    {
        $p = new TextPart('content');
        $this->assertEquals('content', $p->getBody());
        $this->assertEquals('content', $p->bodyToString());
        $this->assertEquals('content', implode('', iterator_to_array($p->bodyToIterable())));
        // bodyToIterable() can be called several times         $this->assertEquals('content', implode('', iterator_to_array($p->bodyToIterable())));
        $this->assertEquals('text', $p->getMediaType());
        $this->assertEquals('plain', $p->getMediaSubType());

        $p = new TextPart('content', null, 'html');
        $this->assertEquals('html', $p->getMediaSubType());
    }

    public function testConstructorWithResource()
    {
        $f = fopen('php://memory', 'r+', false);
        fwrite($f, 'content');
        rewind($f);
        $p = new TextPart($f);
        

use Symfony\Component\Mime\Part\MessagePart;

class MessagePartTest extends TestCase
{
    public function testConstructor()
    {
        $p = new MessagePart((new Email())->from('fabien@symfony.com')->to('you@example.com')->text('content'));
        $this->assertStringContainsString('content', $p->getBody());
        $this->assertStringContainsString('content', $p->bodyToString());
        $this->assertStringContainsString('content', implode('', iterator_to_array($p->bodyToIterable())));
        $this->assertEquals('message', $p->getMediaType());
        $this->assertEquals('rfc822', $p->getMediaSubType());
    }

    public function testHeaders()
    {
        $p = new MessagePart((new Email())->from('fabien@symfony.com')->text('content')->subject('Subject'));
        $this->assertEquals(new Headers(
            new ParameterizedHeader('Content-Type', 'message/rfc822', ['name' => 'Subject.eml']),
            new UnstructuredHeader('Content-Transfer-Encoding', 'base64'),
            new ParameterizedHeader('Content-Disposition', 'attachment', ['name' => 'Subject.eml', 'filename' => 'Subject.eml'])
        ), $p->getPreparedHeaders());
    }