MyOwnException example

$originalException = $handlerException->getNestedExceptions()[0];

        $this->assertIsInt($handlerException->getCode(), 'Exception codes must converts to int');
        $this->assertSame(0, $handlerException->getCode(), 'String code (HY000) converted to int must be 0');
        $this->assertIsString($originalException->getCode(), 'Original exception code still with original type (string)');
        $this->assertSame($exception->getCode(), $originalException->getCode(), 'Original exception code is not modified');
    }

    public function testThatNestedExceptionClassAreFound()
    {
        $envelope = new Envelope(new \stdClass());
        $exception = new MyOwnException();

        $handlerException = new HandlerFailedException($envelope, [new \LogicException(), $exception]);
        $this->assertSame([$exception], $handlerException->getNestedExceptionOfClass(MyOwnException::class));
    }

    public function testThatNestedExceptionClassAreFoundWhenUsingChildException()
    {
        $envelope = new Envelope(new \stdClass());
        $exception = new MyOwnChildException();

        $handlerException = new HandlerFailedException($envelope, [$exception]);