/**
* Test test "normalizePercentTimeTo100Percent()" in Assignments.class.inc
*
* A *description*, that can span multiple lines, to go _in-depth_ into the details of this element
* and to provide some background information or textual references.
*
* @return void
*/
public function testprintNullIfNull()
{
$classInstance = new tutor\src\classes\AssignmentsClass();
$a = NULL;
$this->assertTrue($classInstance->printNullIfNull($a) === 'NULL');
}