public void FindNextBiggerNumber_ReturnNumberIsBiggerThanHighestInteger_MinusOneReturned(int initialNumber)
{
int actual = NumericUtils.FindNextBiggerNumber(initialNumber);
int expected = -1;
Assert.AreEqual(expected, actual);
}
public void FindNextBiggerNumber_CorrectNumberPassed_ExecutionTimeIsApproximatelyCorrect(int initialNumber)
{
Stopwatch sw = new Stopwatch();
sw.Start();
NumericUtils.FindNextBiggerNumber(initialNumber, out long actualMilliseconds);
sw.Stop();
Assert.That(sw.ElapsedMilliseconds, Is.InRange(actualMilliseconds, actualMilliseconds + 1));
}
public void FindNextBiggerNumber_NonPositiveNumberPassed_ArgumentOutOfRangeExceptionThrown(int initialNumber)
{
Assert.Throws <ArgumentOutOfRangeException>(() => NumericUtils.FindNextBiggerNumber(initialNumber));
}
public void FindNextBiggerNumber_CorrectNumberPassed_WorksCorrectly(int initialNumber, int expected)
{
int actual = NumericUtils.FindNextBiggerNumber(initialNumber);
Assert.AreEqual(expected, actual);
}