Nelmio\Alice\ParameterBagTest::testIsImmutable PHP Метод

    public function testIsImmutable()
    {
        $bag = new ParameterBag(['foo' => $std = new \stdClass()]);
        // Mutate injected object
        $std->foo = 'bar';
        // Mutate retrieved object
        $bag->get('foo')->foo = 'baz';
        $this->assertEquals(new ParameterBag(['foo' => new \stdClass()]), $bag);
    }