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LoanExam.cs
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LoanExam.cs
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using System;
using VSharp.Test;
namespace IntegrationTests;
public enum CreditPurpose
{
ConsumerCredit,
Realty,
ReCrediting
}
public enum Deposit
{
Realty,
OldCar,
NewCar,
Guarantee,
None
}
public enum Employment
{
Contract,
OwnIndividualEntrepreneurship,
Freelancer,
Pensioner,
Unemployed
}
public class CreditResult
{
public bool CreditIssued { get; set; }
public double Percent { get; set; }
}
public class CreditInfo
{
public CreditPurpose Purpose { get; set; }
public decimal Sum { get; set; }
public Deposit Deposit { get; set; }
}
public class Personality
{
public string FirstName { get; set; }
public string SecondName { get; set; }
public string Patronymic { get; set; }
public int Age { get; set; }
public Employment Employment { get; set; }
}
public class Passport
{
public string Series { get; set; }
public string Number { get; set; }
public DateTime IssueDate { get; set; }
public string IssuedBy { get; set; }
public string Registration { get; set; }
public static bool operator ==(Passport x, Passport y)
{
return x.Number == y.Number && x.Series == y.Series;
}
public static bool operator !=(Passport x, Passport y)
{
return !(x == y);
}
}
public static class IntExtensions
{
public static bool Between(this int src, int left, int right)
{
return src >= left && src <= right;
}
}
public record Request(
Personality Personality,
CreditInfo CreditInfo,
Passport Passport,
bool CertificateOfNoCriminalRecord,
bool OtherCredits
);
[TestSvmFixture]
public class LoanExam
{
private int CalculateByAge(int age, CreditInfo creditInfo)
{
var SumPoints = 0;
if (age.Between(21, 28))
{
switch (creditInfo.Sum)
{
case < 1_000_000:
return 12;
case > 3_000_000:
return 0;
default:
return 9;
}
}
if (age.Between(29, 59))
{
SumPoints += 14;
return SumPoints;
}
SumPoints += creditInfo.Deposit == Deposit.None
? 0
: 8;
return SumPoints;
}
private int CalculateByCriminal(bool certificateOfNoCriminalRecord)
{
return certificateOfNoCriminalRecord
? 15
: 0;
}
private int CalculateByEmployment(Employment employment, int age)
{
return employment switch
{
Employment.Contract => 14,
Employment.OwnIndividualEntrepreneurship => 12,
Employment.Freelancer => 8,
Employment.Pensioner when age < 70 => 5,
Employment.Pensioner => 0,
Employment.Unemployed => 0,
_ => throw new ArgumentOutOfRangeException(nameof(employment), employment, null)
};
}
private int CalculateByCreditInfo(CreditInfo creditInfo)
{
var SumPoints = 0;
SumPoints += creditInfo.Sum switch
{
<= 1_000_000 => 12,
<= 5_000_000 => 14,
<= 10_000_000 => 8,
_ => throw new ArgumentOutOfRangeException()
};
SumPoints += creditInfo.Deposit switch
{
Deposit.Guarantee => 12,
Deposit.Realty => 14,
Deposit.OldCar => 3,
Deposit.NewCar => 8,
Deposit.None => 0,
_ => throw new ArgumentOutOfRangeException()
};
SumPoints += creditInfo.Purpose switch
{
CreditPurpose.Realty => 8,
CreditPurpose.ConsumerCredit => 14,
CreditPurpose.ReCrediting => 12,
_ => throw new ArgumentOutOfRangeException()
};
return SumPoints;
}
private int CalculateByOtherCredits(bool otherCredits, CreditPurpose creditPurpose)
{
if (!otherCredits)
{
return creditPurpose == CreditPurpose.ReCrediting ? 0 : 15;
}
else
{
return 0;
}
}
[TestSvm(92, 0, stepsLimit: 40000, strat: SearchStrategy.ExecutionTreeContributedCoverage, randomSeed: 0, coverageZone: CoverageZone.Class, releaseBranches: false)]
public CreditResult Build(Request request)
{
var SumPoints = 0;
SumPoints += CalculateByAge(request.Personality.Age, request.CreditInfo);
SumPoints += CalculateByCriminal(request.CertificateOfNoCriminalRecord);
SumPoints += CalculateByEmployment(request.Personality.Employment, request.Personality.Age);
SumPoints += CalculateByCreditInfo(request.CreditInfo!);
SumPoints += CalculateByOtherCredits(request.OtherCredits, request.CreditInfo!.Purpose);
var result = new CreditResult
{
Percent = 0,
CreditIssued = SumPoints >= 80
};
if (SumPoints < 80)
{
return result;
}
result.Percent = SumPoints switch
{
< 84 => 30,
< 88 => 26,
< 92 => 22,
< 96 => 19,
< 100 => 15,
100 => 12.5,
_ => throw new ArgumentOutOfRangeException()
};
result.CreditIssued = true;
SumPoints = 0;
return result;
}
}