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()); }