AssetManagerTest\Service\CollectionsResolverTest::testCouldNotResolve PHP Method

    public function testCouldNotResolve()
    {
        $aggregateResolver = $this->getMock(ResolverInterface::class);
        $aggregateResolver->expects($this->once())->method('resolve')->with('bacon')->will($this->returnValue(null));
        $resolver = new CollectionResolver(array('myCollection' => array('bacon')));
        $resolver->setAggregateResolver($aggregateResolver);
        $resolver->resolve('myCollection');
    }