Visual Studio
코드 계약

비고

표준 전제 조건

using System.Diagnostics.Contracts;

public int DivideNumbers(int numerator, int denominator)
{
    Contract.Requires(denominator != 0);

    return numerator / denominator;
}

특정 예외를 throw하는 사전 조건

using System.Diagnostics.Contracts;

public int DivideNumbers(int numerator, int denominator)
{
    Contract.Requires<ArgumentOutOfRangeException>(denominator != 0);

    return numerator / denominator;
}

전후 조건

using System.Diagnostics.Contracts;

public int IncrementByRandomAmount(int input)
{   
    Contract.Requires<ArgumentNullException>(input != null); // Don't allow null parameter.
    Contract.Requires<ArgumentOutOfRangeException>(input < int.MaxValue); // We can't do anything if we're given int.MaxValue.
    Contract.Ensures(Contract.Result<int>() > input); // Return value will be greater than input value.

    Random rnd = new Random();
    input += rnd.Next(1, 13); // Creates a number between 1 and 12 and adds it to input.

    return input;
}