public function testIsValid()
{
$r = new ReflectionClass(ResponseSpeechSO::class);
$p0 = $r->getProperty('type');
$p1 = $r->getProperty('text');
$p2 = $r->getProperty('ssml');
$p0->setAccessible(true);
$p1->setAccessible(true);
$p2->setAccessible(true);
$instance = new ResponseSpeechSO();
$this->assertFalse($instance->isValid());
$p0->setValue($instance, $instance::TYPE_PLAIN_TEXT);
$this->assertFalse($instance->isValid());
$p1->setValue($instance, 'test value');
$this->assertTrue($instance->isValid());
$instance = new ResponseSpeechSO();
$p0->setValue($instance, $instance::TYPE_SSML);
$this->assertFalse($instance->isValid());
$p2->setValue($instance, 'test ssml');
$this->assertTrue($instance->isValid());
}
