public void CanIGetANumberEqualThanOneHundredMillion()
{
var siblingNumber = new SiblingNumber();
var result = siblingNumber.Largest(100000000);
Assert.AreEqual(100000000, result);
}
public void CanISendANumberBiggerThanOneHundredMillion()
{
var siblingNumber = new SiblingNumber();
var result = siblingNumber.Largest(100000001);
Assert.AreEqual(-1, result);
}
public void LargestSiblingNumberCanSatisfyBasicTestPart4()
{
var siblingNumber = new SiblingNumber();
var result = siblingNumber.Largest(123);
Assert.AreEqual(321, result);
}
public void LargestSiblingNumberCanSatisfyBasicTestPart2()
{
var siblingNumber = new SiblingNumber();
var result = siblingNumber.Largest(535);
Assert.AreEqual(553, result);
}
private static int Calculate()
{
Console.WriteLine("Please enter a number to discover your largest sibling number or -1 to exit");
var result = Console.ReadLine();
var inputNumber = Convert.ToInt32(result);
if (inputNumber != -1)
{
var siblingNumber = new SiblingNumber();
var largestSiblingNumber = siblingNumber.Largest(inputNumber);
if (largestSiblingNumber == -1)
{
Console.WriteLine("The result exceeds 100,000,000");
Console.ReadLine();
return(largestSiblingNumber);
}
Console.WriteLine($"The sibling number is {largestSiblingNumber}");
return(largestSiblingNumber);
}
return(inputNumber);
}
public void CanISendNegativeNumber()
{
var siblingNumber = new SiblingNumber();
var result = siblingNumber.Largest(-1);
}