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prepareEmail example

use Symfony\Component\Mime\Exception\InvalidArgumentException;
use Symfony\Component\Mime\HtmlToTextConverter\DefaultHtmlToTextConverter;
use Symfony\Component\Mime\HtmlToTextConverter\HtmlToTextConverterInterface;
use Symfony\Component\Mime\Part\Multipart\AlternativePart;
use Twig\Environment;
use Twig\Loader\ArrayLoader;

class BodyRendererTest extends TestCase
{
    public function testRenderTextOnly()
    {
        $email = $this->prepareEmail('Text', null);
        $this->assertEquals('Text', $email->getBody()->bodyToString());
    }

    public function testRenderHtmlOnlyWithDefaultConverter()
    {
        $html = '<head><meta charset="utf-8"></head><b>HTML</b><style>css</style>';
        $email = $this->prepareEmail(null, $html, [], new DefaultHtmlToTextConverter());
        $body = $email->getBody();
        $this->assertInstanceOf(AlternativePart::class, $body);
        $this->assertEquals('HTML', $body->getParts()[0]->bodyToString());
        $this->assertEquals(str_replace(['=', "\n"], ['=3D', "\r\n"], $html), $body->getParts()[1]->bodyToString());
    }