public function testApply()
{
$categoryId = 123;
$requestVar = 'test_request_var';
$this->target->setRequestVar($requestVar);
$this->request->expects($this->any())->method('getParam')->will($this->returnCallback(function ($field) use($requestVar, $categoryId) {
$this->assertTrue(in_array($field, [$requestVar, 'id']));
return $categoryId;
}));
$this->dataProvider->expects($this->once())->method('setCategoryId')->with($categoryId)->will($this->returnSelf());
$this->category->expects($this->once())->method('getId')->will($this->returnValue($categoryId));
$this->collection->expects($this->once())->method('addCategoryFilter')->with($this->category)->will($this->returnSelf());
$this->target->apply($this->request);
}
