Model a test that expects an exception for one input shape.

Expected Exception

ExpectedException.cs
using System;

class Program
{
    static int Divide(int numerator, int denominator)
    {
        return numerator / denominator;
    }

    static void Main()
    {
        int denominator = ;
        bool expectedException = denominator == 0;
        bool sawException = false;
        string outcome = "completed";

        try
        {
            int value = Divide(10, denominator);
            outcome = $"value={value}";
        }
        catch (DivideByZeroException)
        {
            sawException = true;
            outcome = "divide-by-zero";
        }

        bool testPassed = sawException == expectedException;

        Console.WriteLine($"expectedException={expectedException}");
        Console.WriteLine($"sawException={sawException}");
        Console.WriteLine($"outcome={outcome}");
        Console.WriteLine($"testPassed={testPassed}");
    }
}
using System;

class Program
{
    static int Divide(int numerator, int denominator)
    {
        return numerator / denominator;
    }

    static void Main()
    {
        int denominator = ;
        bool expectedException = denominator == 0;
        bool sawException = false;
        string outcome = "completed";

        try
        {
            int value = Divide(10, denominator);
            outcome = $"value={value}";
        }
        catch (DivideByZeroException)
        {
            sawException = true;
            outcome = "divide-by-zero";
        }

        bool testPassed = sawException == expectedException;

        Console.WriteLine($"expectedException={expectedException}");
        Console.WriteLine($"sawException={sawException}");
        Console.WriteLine($"outcome={outcome}");
        Console.WriteLine($"testPassed={testPassed}");
    }
}
using System;

class Program
{
    static int Divide(int numerator, int denominator)
    {
        return numerator / denominator;
    }

    static void Main()
    {
        int denominator = ;
        bool expectedException = denominator == 0;
        bool sawException = false;
        string outcome = "completed";

        try
        {
            int value = Divide(10, denominator);
            outcome = $"value={value}";
        }
        catch (DivideByZeroException)
        {
            sawException = true;
            outcome = "divide-by-zero";
        }

        bool testPassed = sawException == expectedException;

        Console.WriteLine($"expectedException={expectedException}");
        Console.WriteLine($"sawException={sawException}");
        Console.WriteLine($"outcome={outcome}");
        Console.WriteLine($"testPassed={testPassed}");
    }
}
testing Exception tests pass when the expected exception is observed and fail when the code completes unexpectedly.