public function setUp()
{
vfsStream::setup('Foo');
$this->resourceStreamWrapper = new ResourceStreamWrapper();
$this->mockPackageManager = $this->createMock(PackageManagerInterface::class);
$this->inject($this->resourceStreamWrapper, 'packageManager', $this->mockPackageManager);
$this->mockResourceManager = $this->getMockBuilder(ResourceManager::class)->disableOriginalConstructor()->getMock();
$this->inject($this->resourceStreamWrapper, 'resourceManager', $this->mockResourceManager);
}