public async Task CalculateMontlyRateAsync_ParametersOk_Calculate(decimal mortgageLoan,
double annualInterest, uint numberOfPayments, decimal rate)
{
var logFactoryMock = new Mock <ILoggerFactory>();
var logMock = new Mock <ILogger>();
logFactoryMock
.Setup(e => e.CreateLogger(nameof(MortgageCalculator)))
.Returns(logMock.Object);
var target = new MortgageCalculator(logFactoryMock.Object);
var actual = await target.CalculateMontlyRateAsync(mortgageLoan, annualInterest, numberOfPayments);
Assert.True(actual.Succeed);
Assert.Null(actual.Error);
Assert.Equal(actual.Result.Value, rate);
}
public async Task CalculateMontlyRateAsync_AnnualInterestLessThanZero_Error()
{
decimal mortgageLoan = 100000;
double annualInterest = -10;
uint numberOfPayments = 10;
var logFactoryMock = new Mock <ILoggerFactory>();
var logMock = new Mock <ILogger>();
logFactoryMock
.Setup(e => e.CreateLogger(nameof(MortgageCalculator)))
.Returns(logMock.Object);
var target = new MortgageCalculator(logFactoryMock.Object);
var actual = await target.CalculateMontlyRateAsync(mortgageLoan, annualInterest, numberOfPayments);
Assert.False(actual.Succeed);
Assert.NotNull(actual.Error);
Assert.Equal(actual.Error.Code, MortgageCalculatorErrors.AnnualInterestNotValid);
}