public function testUsingFacetManager() { $facetManagerMock = $this->getMockForAbstractClass('\\AboutYou\\SDK\\Model\\FacetManager\\FacetManagerInterface'); $facetManagerMock->expects($this->atLeastOnce())->method('getFacet'); FacetGroupSet::setFacetManager($facetManagerMock); $facetGroupSet = new FacetGroupSet(array(0 => array(123))); $facetGroup = $facetGroupSet->getGroups(); }