public void ShouldHandleZeroLength()
{
var roundRobinIndex = new RoundRobinArrayIndex();
int index = roundRobinIndex.Next(0);
index.Should().Be(-1);
}
public void ShouldHandleOverflow()
{
int arrayLength = 10;
RoundRobinArrayIndex roundRobinIndex = new RoundRobinArrayIndex(Int32.MaxValue - 2);
roundRobinIndex.Next(arrayLength).Should().Be((Int32.MaxValue - 1) % arrayLength);
roundRobinIndex.Next(arrayLength).Should().Be(Int32.MaxValue % arrayLength);
roundRobinIndex.Next(arrayLength).Should().Be(0);
roundRobinIndex.Next(arrayLength).Should().Be(1);
roundRobinIndex.Next(arrayLength).Should().Be(2);
}
public void ShouldReturnIndexesInRoundRobinOrder()
{
RoundRobinArrayIndex roundRobinIndex = new RoundRobinArrayIndex();
for (int i = 0; i < 10; i++)
{
int index = roundRobinIndex.Next(10);
index.Should().Be(i);
}
for (int i = 0; i < 5; i++)
{
int index = roundRobinIndex.Next(5);
index.Should().Be(i);
}
}