public void ForDate_WithEarlierDateThanFirstBudget_ShouldReturnNull()
{
BudgetCollection subject = Arrange();
BudgetModel result = subject.ForDate(DateTime.MinValue);
Assert.IsNull(result);
}
public void ForDate_25_1_2014_ShouldReturnBudget2()
{
BudgetCollection subject = Arrange();
BudgetModel result = subject.ForDate(new DateTime(2014, 1, 25));
Assert.AreSame(subject.First(b => b.Name == TestDataConstants.Budget2Name), result);
}
private static decimal CalculateBudgetedTotalAmount(DateTime beginDate,
Func <BudgetModel, decimal> whichBudgetBucket, BudgetCollection budgets,
OverallPerformanceBudgetResult result)
{
if (!result.UsesMultipleBudgets)
{
return(whichBudgetBucket(budgets.ForDate(beginDate)) * result.DurationInMonths);
}
decimal budgetedAmount = 0;
for (var month = 0; month < result.DurationInMonths; month++)
{
var budget = budgets.ForDate(beginDate.AddMonths(month));
budgetedAmount += whichBudgetBucket(budget);
}
return(budgetedAmount);
}
private static void CalculateTotalsAndAverage(DateTime beginDate, StatementModel statement,
BudgetCollection budgets, OverallPerformanceBudgetResult result)
{
// First total the expenses without the saved up for expenses.
var totalExpensesSpend = statement.Transactions
.Where(t => t.BudgetBucket is ExpenseBucket)
.Sum(t => t.Amount);
var totalSurplusSpend = statement.Transactions
.Where(t => t.BudgetBucket is SurplusBucket)
.Sum(t => t.Amount);
result.AverageSpend = totalExpensesSpend / result.DurationInMonths; // Expected to be negative
result.AverageSurplus = totalSurplusSpend / result.DurationInMonths; // Expected to be negative
for (var month = 0; month < result.DurationInMonths; month++)
{
var budget = budgets.ForDate(beginDate.AddMonths(month));
result.TotalBudgetExpenses += budget.Expenses.Sum(e => e.Amount);
}
result.OverallPerformance = result.AverageSpend + result.TotalBudgetExpenses;
}
private static void CalculateTotalsAndAverage(DateTime beginDate, StatementModel statement,
BudgetCollection budgets, OverallPerformanceBudgetResult result)
{
// First total the expenses without the saved up for expenses.
var totalExpensesSpend = statement.Transactions
.Where(t => t.BudgetBucket is ExpenseBucket)
.Sum(t => t.Amount);
var totalSurplusSpend = statement.Transactions
.Where(t => t.BudgetBucket is SurplusBucket)
.Sum(t => t.Amount);
result.AverageSpend = totalExpensesSpend / result.DurationInMonths; // Expected to be negative
result.AverageSurplus = totalSurplusSpend / result.DurationInMonths; // Expected to be negative
for (var month = 0; month < result.DurationInMonths; month++)
{
var budget = budgets.ForDate(beginDate.AddMonths(month));
result.TotalBudgetExpenses += budget.Expenses.Sum(e => e.Amount);
}
result.OverallPerformance = result.AverageSpend + result.TotalBudgetExpenses;
}
private static decimal CalculateBudgetedTotalAmount(DateTime beginDate,
Func<BudgetModel, decimal> whichBudgetBucket, BudgetCollection budgets,
OverallPerformanceBudgetResult result)
{
if (!result.UsesMultipleBudgets)
{
return whichBudgetBucket(budgets.ForDate(beginDate)) * result.DurationInMonths;
}
decimal budgetedAmount = 0;
for (var month = 0; month < result.DurationInMonths; month++)
{
var budget = budgets.ForDate(beginDate.AddMonths(month));
budgetedAmount += whichBudgetBucket(budget);
}
return budgetedAmount;
}
