public void GetAllExpensesTest()
{
var expense1 = GetNewMockExpense(collaborator.CollaboratorId, expenseStory.ExpenseStoryId);
var expense2 = GetNewMockExpense(collaborator.CollaboratorId, expenseStory.ExpenseStoryId);
var expense3 = GetNewMockExpense(collaborator.CollaboratorId, expenseStory.ExpenseStoryId);
var expectedExpenseCount = 3;
expenseManager.AddExpense(expense1);
expenseManager.AddExpense(expense2);
expenseManager.AddExpense(expense3);
var allExpenses = expenseManager.GetAllExpenses(expenseStory.ExpenseStoryId);
Assert.IsNotNull(allExpenses);
Assert.AreEqual(expectedExpenseCount, allExpenses.Count());
}