Testing garbage allocation of strings and string concatenation in unity

01_ProfilerResults.png

02_NewTestScript.cs

using System.Text;
using NUnit.Framework;
using Unity.Profiling;

namespace Tests
{
    public class NewTestScript
    {
        [Test]
        public void NewTestScriptSimplePasses()
        {
            string oldString, someString, aThirdString;
            using (new ProfilerMarker("MySystem.NewString").Auto())
            {
                someString = "0123456789";
            }

            using (new ProfilerMarker("MySystem.StringConcat").Auto())
            {
                oldString = "01234" + "56789";
            }

            someString = "012345";
            using (new ProfilerMarker("MySystem.StringConcat2").Auto())
            {
                oldString = someString + someString.Substring(0, 4);
            }

            someString = "01234";
            oldString = "56789";
            using (new ProfilerMarker("MySystem.StringConcat3").Auto())
            {
                aThirdString = someString + oldString;
            }


            StringBuilder builder = new StringBuilder(64); // make sure its large enough

            using (new ProfilerMarker("MySystem.BuilderAppend").Auto())
            {
                builder.Append("0123456789");
            }

            using (new ProfilerMarker("MySystem.BuilderAppend2").Auto())
            {
                builder.Append("0123456789");
            }

            using (new ProfilerMarker("MySystem.BuilderAppendLine").Auto())
            {
                builder.AppendLine("0123456789");
            }

            using (new ProfilerMarker("MySystem.BuilderClear").Auto())
            {
                builder.Clear();
            }

            using (new ProfilerMarker("MySystem.BuilderAppendAC").Auto())
            {
                builder.Append("0123456789");
            }

            using (new ProfilerMarker("MySystem.BuilderAppend2AC").Auto())
            {
                builder.Append("0123456789");
            }

            using (new ProfilerMarker("MySystem.BuilderAppendLineAC").Auto())
            {
                builder.AppendLine("0123456789");
            }




        }
    }
}