public void Init()
{
var initiatedAt = new DateTime(2019, 1, 1);
var downpayment = 82000.00M;
var mortgageAmount = 328000.00M;
var preferredInterestRate = 0.0319M;
var initialCash = 10000.00M;
var initialDebt = 5000.00M;
CashFlow = new DummyCashFlow(89.86M);
Subject = new Activity(initialCash, initialDebt, CashFlow, initiatedAt);
{
var purchasedAt = initiatedAt;
var mortgage = new FixedRateMortgage(
mortgageAmount,
preferredInterestRate,
300,
purchasedAt
);
FirstHome = new Home(
"first home",
purchasedAt,
downpayment + mortgageAmount,
downpayment,
mortgage
);
Subject.Buy(FirstHome, purchasedAt);
}
// Sell the first home
{
var soldAt = new DateTime(2020, 1, 3);
Subject.Sell(FirstHome, 500000.00M, soldAt);
}
{
var purchasedAt = new DateTime(2020, 2, 3);
var mortgage = new FixedRateMortgage(
mortgageAmount,
preferredInterestRate,
300,
purchasedAt
);
SecondHome = new Home(
"second home",
purchasedAt,
downpayment + mortgageAmount,
downpayment,
mortgage
);
Subject.Buy(SecondHome, purchasedAt);
}
}
public void Test_PeriodicMonthlyInterestRate(decimal interestRate, int amortisationPeriodInMonths, decimal expected)
{
var purchasedAt = new DateTime(2019, 1, 1);
var subject = new FixedRateMortgage(new Money(100000, purchasedAt), interestRate, 300, purchasedAt);
Assert.That(
decimal.Round(Convert.ToDecimal(subject.PeriodicMonthlyInterestRate), 12),
Is.EqualTo(expected)
);
}
public void Test_Constructor(int year, int month, int day, int expectedYear, int expectedMonth, int expectedDay)
{
var date = new DateTime(year, month, day);
var money = new Money(0.00M, date);
var mortgage = new FixedRateMortgage(money, 0.0314M, 300, date);
Assert.That(mortgage.InitiatedAt.Year, Is.EqualTo(expectedYear));
Assert.That(mortgage.InitiatedAt.Month, Is.EqualTo(expectedMonth));
Assert.That(mortgage.InitiatedAt.Day, Is.EqualTo(expectedDay));
}
public void Init()
{
var purchasedAt = new DateTime(2019, 1, 1);
var mortgageAmount = 328000.00M;
var preferredInterestRate = 0.0319M;
Mortgage = new FixedRateMortgage(mortgageAmount, preferredInterestRate, 300, purchasedAt);
Subject = new Financier.Common.Liabilities.PrepayableMortgage(Mortgage, 0.10M);
Subject.AddPrepayment(new DateTime(2019, 12, 31), 32800.00M);
Subject.AddPrepayment(new DateTime(2020, 12, 31), 32800.00M);
}
public BuildTest()
{
var purchasedAt = new DateTime(2019, 1, 1);
var mortgageAmount = 328000.00M;
var mortgageAmountMoney = new Money(mortgageAmount, purchasedAt);
var preferredInterestRate = 0.0319M;
BaseMortgage = new FixedRateMortgage(mortgageAmountMoney, preferredInterestRate, 300, purchasedAt);
Subject = new PrepayableMortgageBuilder(BaseMortgage);
Result = Subject.Build();
}
public void Test_Constructor(int year, int month, int day, int expectedYear, int expectedMonth, int expectedDay)
{
var date = new DateTime(year, month, day);
var downpayment = 100.00M;
var baseMortgage = new FixedRateMortgage(downpayment, 0.0314M, 300, date);
var mortgage = new InsuredMortgage(baseMortgage, 20.00M);
Assert.That(mortgage.InitiatedAt.Year, Is.EqualTo(expectedYear));
Assert.That(mortgage.InitiatedAt.Month, Is.EqualTo(expectedMonth));
Assert.That(mortgage.InitiatedAt.Day, Is.EqualTo(expectedDay));
}
public void Test_InsuranceValue(decimal downPaymentPercentage, decimal expected)
{
var purchasedAt = new DateTime(2019, 1, 1);
var homePrice = 500000.00M;
var downPayment = downPaymentPercentage * homePrice;
var mortgageAmount = (1 - downPaymentPercentage) * homePrice;
var preferredInterestRate = 0.0319M;
var baseMortgage = new FixedRateMortgage(mortgageAmount, preferredInterestRate, 300, purchasedAt);
var subject = new InsuredMortgage(baseMortgage, downPayment);
Assert.That(
subject.Insurance,
Is.EqualTo(expected).Within(15.00M).Percent
);
}
public OneHomeQuery()
{
Field <DecimalGraphType>(
"buyAndSellCondo",
arguments: new QueryArguments(
new QueryArgument <NonNullGraphType <DateGraphType> >
{
Name = Keys.InitiatedAt
},
new QueryArgument <NonNullGraphType <DecimalGraphType> >
{
Name = Keys.DownPayment
},
new QueryArgument <NonNullGraphType <DecimalGraphType> >
{
Name = Keys.PurchasePrice
},
new QueryArgument <IntGraphType>
{
Name = Keys.AmortisationPeriodInMonths,
DefaultValue = 300
},
new QueryArgument <NonNullGraphType <DecimalGraphType> >
{
Name = Keys.InterestRate
}
),
resolve: context =>
{
var purchasedAt = GetInitiatedAt(context);
var purchasePrice = GetPurchasePrice(context);
var downPayment = GetDownPayment(context);
var interestRate = GetInterestRate(context);
var amortisationPeriodInMonths = GetAmortizationPeriodInMonths(context);
var soldAt = purchasedAt.AddMonths(amortisationPeriodInMonths);
var salePrice = Inflations.CondoPriceIndex.GetValueAt(purchasePrice, purchasedAt, soldAt);
// START Validation
// END Validation
var mortgage = new FixedRateMortgage(purchasePrice - downPayment, interestRate, amortisationPeriodInMonths, purchasedAt);
var home = new Home("foobar", purchasedAt, purchasePrice, downPayment, mortgage);
var activity = new Activity(purchasedAt);
activity.Buy(home, purchasedAt);
activity.Sell(home, salePrice, soldAt);
// var year = context.GetArgument<int>(Keys.Year);
// var month = context.GetArgument<int>(Keys.Month);
// var day = context.GetArgument<int>(Keys.Day);
//
// var at = new DateTime(year, month, day);
return(activity.GetNetWorthAt(Inflations.NoopInflation, soldAt.AddDays(1)));
}
);
Field <DecimalGraphType>(
"rentApartment",
arguments: new QueryArguments(
new QueryArgument <NonNullGraphType <DateGraphType> >
{
Name = Keys.InitiatedAt
},
new QueryArgument <IntGraphType>
{
Name = Keys.AmortisationPeriodInMonths,
DefaultValue = 300,
Description = "Rental Period (in months)"
},
new QueryArgument <NonNullGraphType <DecimalGraphType> >
{
Name = Keys.MonthlyRentalRate
}
),
resolve: context =>
{
var startAt = GetInitiatedAt(context);
var rentalPeriod = GetAmortizationPeriodInMonths(context);
var rentalMonthlyRate = GetMonthlyRentalRate(context);
var endAt = startAt.AddMonths(rentalPeriod);
var rental = new RentalHome("foobar", startAt, rentalMonthlyRate);
// START Validation
// END Validation
var activity = new Activity(startAt);
activity.Buy(rental, startAt);
activity.Sell(rental, 0.00M, endAt);
return(activity.GetNetWorthAt(Inflations.NoopInflation, endAt.AddDays(1)));
}
);
}
