public void Should_ThrowException_When_ZeroOrNegativePreamble(int preamble)
{
var inputLines = new long[] { 1, 2, 3 };
var sut = new XmasCypherHelpers(inputLines);
Assert.Throws <ArgumentOutOfRangeException>(() => sut.Validate(preamble, out var firstInvalidNumber));
}
public void Should_ThrowException_When_ZeroOrNegativeTarget(long target)
{
var inputLines = new long[] { 1, 2, 3 };
var preamble = 1;
var sut = new XmasCypherHelpers(inputLines);
Assert.Throws <ArgumentOutOfRangeException>(() => sut.FindContiguousSetAddingUpTo(target));
}
public void Should_Validate_When_ValidInput()
{
var inputLines = new long[] { 35, 20, 15, 25, 47, 40, 62, 55, 65, 95, 102, 117, 150, 182 };
var preamble = 5;
var sut = new XmasCypherHelpers(inputLines);
Assert.That(sut.Validate(preamble, out var firstInvalidNumber), Is.EqualTo(true));
}
public void Should_FindContiguousSetAddingUpTo_When_ValidInput()
{
var inputLines = new long[]
{
35, 20, 15, 25, 47, 40, 62, 55, 65, 95, 102, 117, 150, 182, 127, 219, 299, 277, 309, 576
};
const long target = 127;
var expectedSet = new long[] { 15, 25, 47, 40 };
var sut = new XmasCypherHelpers(inputLines);
Assert.That(sut.FindContiguousSetAddingUpTo(target), Is.EqualTo(expectedSet));
}
public void Should_FindFirstInvalidNumber_When_InvalidInput()
{
var inputLines = new long[]
{
35, 20, 15, 25, 47, 40, 62, 55, 65, 95, 102, 117, 150, 182, 127, 219, 299, 277, 309, 576
};
var preamble = 5;
var sut = new XmasCypherHelpers(inputLines);
sut.Validate(preamble, out var actualFirstInvalidNumber);
var expectedFirstInvalidNumber = 127;
Assert.That(actualFirstInvalidNumber == expectedFirstInvalidNumber);
}
