public function testGetProductCollection()
{
$this->registry->expects($this->once())->method('registry')->with($this->equalTo('current_category'))->will($this->returnValue($this->category));
$this->category->expects($this->any())->method('getId')->will($this->returnValue(333));
$this->collectionFilter->expects($this->once())->method('filter')->with($this->equalTo($this->collection), $this->equalTo($this->category));
$this->collectionProvider->expects($this->once())->method('getCollection')->with($this->equalTo($this->category))->will($this->returnValue($this->collection));
$result = $this->model->getProductCollection();
$this->assertInstanceOf('\\Magento\\Catalog\\Model\\ResourceModel\\Product\\Collection', $result);
$result = $this->model->getProductCollection();
$this->assertInstanceOf('\\Magento\\Catalog\\Model\\ResourceModel\\Product\\Collection', $result);
}
