TestTimberImage::testImageAltText PHP Method

    function testImageAltText()
    {
        $upload_dir = wp_upload_dir();
        $thumb_alt = 'Thumb alt';
        $filename = self::copyTestImage('flag.png');
        $wp_filetype = wp_check_filetype(basename($filename), null);
        $post_id = $this->factory->post->create();
        $attachment = array('post_mime_type' => $wp_filetype['type'], 'post_title' => preg_replace('/\\.[^.]+$/', '', basename($filename)), 'post_excerpt' => '', 'post_status' => 'inherit');
        $attach_id = wp_insert_attachment($attachment, $filename, $post_id);
        add_post_meta($post_id, '_thumbnail_id', $attach_id, true);
        add_post_meta($attach_id, '_wp_attachment_image_alt', $thumb_alt, true);
        $data = array();
        $data['post'] = new TimberPost($post_id);
        $this->assertEquals($data['post']->thumbnail()->alt(), $thumb_alt);
    }