/**
  * @param bool|string $expected
  * @param array $page
  * @param array $rootLine
  * @test
  * @dataProvider selectedCombinedIdentifierIsDeterminedDataProvider
  */
 public function selectedCombinedIdentifierIsDetermined($expected, array $page, array $rootLine)
 {
     $pageId = $page['uid'];
     $this->backendLayoutView->expects($this->once())->method('getPage')->with($this->equalTo($pageId))->will($this->returnValue($page));
     $this->backendLayoutView->expects($this->any())->method('getRootLine')->with($this->equalTo($pageId))->will($this->returnValue($rootLine));
     $selectedCombinedIdentifier = $this->backendLayoutView->_call('getSelectedCombinedIdentifier', $pageId);
     $this->assertEquals($expected, $selectedCombinedIdentifier);
 }