private static void AssertSumWithIndex(int times, int expected)
{
var sum = 0;
var indexes = new List <int>();
times.Times(index => { ++sum; indexes.Add(index); });
Assert.AreEqual(expected, sum);
Assert.AreEqual(times < 0 ? 0 : times, indexes.Count);
AssertIterator.IndexesGrow(0, indexes);
}
private static void AssertEachWithIndex(string input)
{
var sb = new StringBuilder();
var indexes = new List <int>();
input.Each((ch, i) => {
sb.Append(ch);
indexes.Add(i);
});
Assert.AreEqual(sb.ToString(), input);
AssertIterator.IndexesGrow(0, indexes);
}