function test_getDescription()
 {
     //Arrange
     $description = "Buy book on learning French";
     $project_id = 1;
     $position = 1;
     $test_step = new Step($description, $project_id, $position);
     //Act
     $result = $test_step->getDescription();
     //Assert
     $this->assertEquals($description, $result);
 }