public void FindsTwoPairsWhenAdjacent()
{
string value = "()()";
var finder = new BracketPairFinder(BracketPairType.Round);
BracketPairCollection pairs = finder.FindPairs(value);
Assert.Equal(2, pairs.Count);
var pair = pairs.FindLeftByIndex(0);
Assert.NotNull(pair);
Assert.Equal(1, pair.RightIndex);
pair = pairs.FindLeftByIndex(2);
Assert.NotNull(pair);
Assert.Equal(3, pair.RightIndex);
}