Nelmio\Alice\Generator\Instantiator\ExistingInstanceInstantiator::instantiate PHP Метод

    public function instantiate(FixtureInterface $fixture, ResolvedFixtureSet $fixtureSet, GenerationContext $context) : ResolvedFixtureSet
    {
        if ($fixtureSet->getObjects()->has($fixture)) {
            return $fixtureSet;
        }
        return $this->instantiator->instantiate($fixture, $fixtureSet, $context);
    }

 public function testReturnsTheResultOfTheDecoratedInstantiatorIfTheFixtureHasNotBeenInstantiated()
 {
     $fixture = new DummyFixture('dummy');
     $set = ResolvedFixtureSetFactory::create();
     $context = new GenerationContext();
     $context->markIsResolvingFixture('foo');
     $decoratedInstantiatorProphecy = $this->prophesize(InstantiatorInterface::class);
     $decoratedInstantiatorProphecy->instantiate($fixture, $set, $context)->willReturn($expected = $set->withObjects((new ObjectBag())->with(new SimpleObject('dummy', new \stdClass()))));
     /** @var InstantiatorInterface $decoratedInstantiator */
     $decoratedInstantiator = $decoratedInstantiatorProphecy->reveal();
     $instantiator = new ExistingInstanceInstantiator($decoratedInstantiator);
     $actual = $instantiator->instantiate($fixture, $set, $context);
     $this->assertSame($expected, $actual);
     $decoratedInstantiatorProphecy->instantiate(Argument::cetera())->shouldHaveBeenCalledTimes(1);
 }