public function testDisplay() { $profilerOutputOne = $this->getMockForAbstractClass('Magento_Profiler_OutputAbstract'); $profilerOutputOne->expects($this->exactly(2))->method('display'); $profilerOutputTwo = $this->getMockForAbstractClass('Magento_Profiler_OutputAbstract'); $profilerOutputTwo->expects($this->once())->method('display'); Magento_Profiler::registerOutput($profilerOutputOne); Magento_Profiler::display(); Magento_Profiler::disable(); Magento_Profiler::registerOutput($profilerOutputTwo); Magento_Profiler::display(); }