public function testSave() { for ($i = 0; $i < 3; $i++) { /** @var \Magento\Framework\Object|\PHPUnit_Framework_MockObject_MockObject $item */ $item = $this->getMock('Magento\\Framework\\Object', ['save']); $item->expects($this->once())->method('save'); $this->uut->addItem($item); } $this->assertTrue($this->uut->save() instanceof Uut); }