Nelmio\Alice\ParameterBagTest::testWithersReturnNewModifiedObject PHP Метод

    public function testWithersReturnNewModifiedObject()
    {
        $bag = new ParameterBag(['foo' => 'bar']);
        $newBag = $bag->with(new Parameter('ping', 'pong'));
        $this->assertEquals(new ParameterBag(['foo' => 'bar']), $bag);
        $this->assertEquals(new ParameterBag(['foo' => 'bar', 'ping' => 'pong']), $newBag);
    }