Test ZString performance

TestString.cs

using UnityEngine;
using Cysharp.Text;
using TMPro;
using System;

public class TestString : MonoBehaviour
{
    [SerializeField] private int loopAmount = 1000;
    [SerializeField] private TMP_Text tmp;
    
    private readonly string[] _baseString = new[]
        {"Prince of Endia", "Guardian of the Kingdom", "Arrow of the North", "Endia's Sword"};

    private readonly string[] _templateString = new[]
    {
        "Jave throws a Justice flag to nearby location that increases allies' attack speed by {0}% for a short duration.",
        "Restores {0} HP (+ {1}% HP of Lyna) to all nearby troops and heroes.",
        "Arryn's attack speed is increased by {0}% (+{1}% for every {2} points of Arryn's max attack).",
        "Dealing {0} (+{1}% Jave's maximum attack) physical damage to nearby enemies and stun them for {2} seconds.{3} enemy damaged by this ability will lower its cooldown by 3 second."
    };

    private Utf8ValueStringBuilder _sbUtf8 = ZString.CreateUtf8StringBuilder();

    public void Test_All()
    {
        GC.Collect();
        Test_String_Format();
        GC.Collect();
        Test_ZString_Format();
        GC.Collect();
        Test_ZString_Utf8StringBuilder_Member();
        GC.Collect();
        Test_ZString_Utf8StringBuilder_Local();
        GC.Collect();
        Test_TMPro_Text();
        GC.Collect();
        Test_TMPro_SetText();
        GC.Collect();
        Test_TMPro_SetTextFormat();
        GC.Collect();
    }

    public void Test_String_Format()
    {
        for (var i = 0; i < loopAmount; i++)
        {
            String_Format();
        }
    }

    public void Test_ZString_Format()
    {
        for (var i = 0; i < loopAmount; i++)
        {
            ZString_Format();
        }
    }

    public void Test_ZString_Utf8StringBuilder_Local()
    {
        for (var i = 0; i < loopAmount; i++)
        {
            ZString_Utf8StringBuilder_Local();
        }
    }

    public void Test_ZString_Utf8StringBuilder_Member()
    {
        for (var i = 0; i < loopAmount; i++)
        {
            ZString_Utf8StringBuilder_Member();
        }
    }

    public void Test_TMPro_Text()
    {
        for (int i = 0; i < loopAmount; i++)
        {
            TMPro_ZString_Format_Text();
        }
    }

    public void Test_TMPro_SetText()
    {
        for (int i = 0; i < loopAmount; i++)
        {
            TMPro_ZString_Format_SetText();
        }
    }

    public void Test_TMPro_SetTextFormat()
    {
        for (var i = 0; i < loopAmount; i++)
        {
            TMPro_ZString_SetTextFormat();
        }
    }

    private void String_Format()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];
        var result = "";

        switch (templateIndex)
        {
            case 0:
                result = string.Format(templateString, GetRandomBaseString());
                break;
            case 1:
                result = string.Format(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                result = string.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                result = string.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }
    }

    private void ZString_Format()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];
        var result = "";

        switch (templateIndex)
        {
            case 0:
                result = ZString.Format(templateString, GetRandomBaseString());
                break;
            case 1:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }
    }

    private void ZString_Utf8StringBuilder_Local()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];

        using var sb = ZString.CreateUtf8StringBuilder();

        switch (templateIndex)
        {
            case 0:
                sb.AppendFormat(templateString, GetRandomBaseString());
                break;
            case 1:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }
    }

    private void ZString_Utf8StringBuilder_Member()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];

        var sb = _sbUtf8;
        sb.Clear();

        switch (templateIndex)
        {
            case 0:
                sb.AppendFormat(templateString, GetRandomBaseString());
                break;
            case 1:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                sb.AppendFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }
    }

    private void TMPro_ZString_Format_Text()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];
        var result = "";

        switch (templateIndex)
        {
            case 0:
                result = ZString.Format(templateString, GetRandomBaseString());
                break;
            case 1:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }

        tmp.text = result;
    }


    private void TMPro_ZString_Format_SetText()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];
        var result = "";

        switch (templateIndex)
        {
            case 0:
                result = ZString.Format(templateString, GetRandomBaseString());
                break;
            case 1:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                result = ZString.Format(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }

        tmp.SetText(result);
    }

    private void TMPro_ZString_SetTextFormat()
    {
        var templateIndex = UnityEngine.Random.Range(0, _templateString.Length);
        var templateString = _templateString[templateIndex];
        switch (templateIndex)
        {
            case 0:
                tmp.SetTextFormat(templateString, GetRandomBaseString());
                break;
            case 1:
                tmp.SetTextFormat(templateString, GetRandomBaseString(), GetRandomBaseString());
                break;
            case 2:
                tmp.SetTextFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
            case 3:
                tmp.SetTextFormat(templateString, GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString(), GetRandomBaseString());
                break;
        }
    }
    
    private string GetRandomBaseString()
    {
        var randomIndex = UnityEngine.Random.Range(0, _baseString.Length);
        return _baseString[randomIndex];
    }
}