using System.Text;

using BenchmarkHelper;

public class BenchmarkDemo
{
    static void Main()
    {
        string[] bits = { "a", "b", "c", "d", "e" };
        // TestSuite.Create is a generic method on the non-generic TestSuite
        // class, which returns an instance of the generic
        // TestSuite<TInput, TOutput> class
        var results = TestSuite.Create("Joining strings", bits, "a b c d e")
            // Each Add call is returning a new TestSuite<string[], string>
            // - the original one is left untouched
            .Add(LoopingWithStringBuilder)
            .Add(LoopingWithStringConcatenation)
            // You don't have to specify a method group - but you'll probably
            // want to give an explicit name if you use
            .Add(input => string.Join(" ", input), "String.Join")
            // This returns a ResultSuite (no generics)
            .RunTests()                          
            // Again, scaling returns a new ResultSuite, with all the results
            // scaled - in this case they'll all have the same number of
            // iterations
            .ScaleByBest(ScalingMode.VaryDuration);
        
        // There are pairs for name and score, iterations or duration - but
        // we want name, duration *and* score
        results.Display(ResultColumns.NameAndDuration | ResultColumns.Score,
                        // Scale the scores to make the best one get 1.0
                        results.FindBest());
    }
    
    static string LoopingWithStringBuilder(string[] input)
    {
        StringBuilder builder = new StringBuilder(input[0]);
        for (int i=1; i < input.Length; i++)
        {
            builder.Append(" ");
            builder.Append(input[i]);
        }
        return builder.ToString();
    }

    static string LoopingWithStringConcatenation(string[] input)
    {
        string ret = input[0];
        for (int i=1; i < input.Length; i++)
        {
            // At least avoid *one* temporary string per iteration
            ret = ret + " " + input[i];
        }
        return ret;
    }
}