public void GetExpenses()
{
// Arrange
MonthSummary summary = BuildSummary();
// Act
var statements = summary.GetExpenses();
// Assert
Assert.Equal(4, statements.Count);
Assert.Equal(621.10m, statements.Where(x => x.Category.Name == IncomeCategoryName).Sum(x => x.Amount.Value));
Assert.Equal(500.20m, statements.Where(x => x.Category.Name == IncomePaidCategoryName).Sum(x => x.Amount.Value));
}
private IReadOnlyList <ExpenseDto> FormatExpenses() => summary .GetExpenses() .GroupBy(x => x.Category) .Select(x => new ExpenseDto(x.Key, x.Sum(values => values.Amount.Value))) .ToList();