using System;

public class Program

{

    public static void Main(string[] args)

    {

        var test = new int[] { 1, 2, 3, 4, 5, 6, 8, 9 };

        var testNoEvens = new int[] { 3, 5 };

        var testAllEvens = new int[] { -2, 2, 4, 6, 8 };

        var testNegatives = new int[] { 2, 6, 8, -2, 12, 3, 12, -18, 12, 12, 5 };

        var testToFurtherDescribe = new int[] { 12, -18, 12, 12, 5 };

​

        Console.Out.WriteLine( "Begin SumAllEvens tests" );

        Assert(SumAllEvens(test), 20, "FAIL - Expected Result is 20");

        Assert(SumAllEvens(testNoEvens), 0, "FAIL - Expected Result is 0");

        Assert(SumAllEvens(testAllEvens), 18, "FAIL - Expected Result is 18");

        Assert(SumAllEvens(testNegatives), 44, "FAIL - Expected Result is 44");

        Assert(SumAllEvens(testToFurtherDescribe), 18, "FAIL - Expected Result is 18");

​

        Console.Out.WriteLine();

        Console.Out.WriteLine( "Begin BiggestSumFromSequenceOfEvens tests" );

        Assert(BiggestSumFromSequenceOfEvens(test), 14, "FAIL - Expected Result is 14 ( 6 + 8 )");

        Assert(BiggestSumFromSequenceOfEvens(testNoEvens), 0, "FAIL - Expected Result is 0");

        Assert(BiggestSumFromSequenceOfEvens(testAllEvens), 20, "FAIL - Expected Result is 20 ( 2 + 4 + 6 + 8 )");

        Assert(BiggestSumFromSequenceOfEvens(testNegatives), 26, "FAIL - Expected Result is 26 ( 2 + 6 + 8 -2 + 12 )");

        Assert(BiggestSumFromSequenceOfEvens(testToFurtherDescribe), 24, "FAIL - Expected Result is 24 ( 12 + 12 )");

    }

​

    //Sums all even values in the provided array

    public static int SumAllEvens(int[] naNumbers)

    {

        return 0;

    }

​

    //Returns the greatest sum of continuus even numbers in the provided array

    public static int BiggestSumFromSequenceOfEvens(int[] naNumbers)

    {

        return 0;

    }

​

    // Helper function because rextester does not support Debug.Assert

    public static void Assert(int actual, int expected, string strMessage)

    {

        Console.Out.Write("Result: " + actual);

        if (actual == expected)

            Console.Out.WriteLine(" - PASS. ");

        else

            Console.Out.WriteLine(" - FAIL. " + strMessage);

    }

}