AssetManagerTest\Service\CollectionsResolverTest::testSetGetAggregateResolver PHP Method

    public function testSetGetAggregateResolver()
    {
        $resolver = new CollectionResolver();
        $aggregateResolver = $this->getMock(ResolverInterface::class);
        $aggregateResolver->expects($this->once())->method('resolve')->with('say')->will($this->returnValue('world'));
        $resolver->setAggregateResolver($aggregateResolver);
        $this->assertEquals('world', $resolver->getAggregateResolver()->resolve('say'));
    }