public void CreateStringForDictTest()
{
//Arrange
CalculationMethod calculationMethod = new CalculationMethod();
//Act
var exp = expenseRepository.GetAllExpenses(1)[0];
string name = exp.Name;
List <string> membersInvolved = exp.NamesOfMembersInvolved.Split(',').ToList();
string singleStringForDict = calculationMethod.CreateStringForDictionary(membersInvolved, name, 0);
string expectedString = "Igor_Adam";
//Assert
Assert.AreEqual(expectedString, singleStringForDict);
}