/** * @covers \Magento\Cms\Model\Page::checkIdentifier */ public function testCheckIdentifier() { $identifier = 1; $storeId = 2; $fetchOneResult = 'some result'; $this->resourcePageMock->expects($this->atLeastOnce())->method('checkIdentifier')->with($identifier, $storeId)->willReturn($fetchOneResult); $this->assertInternalType('string', $this->thisMock->checkIdentifier($identifier, $storeId)); }