From a51d51fa2183b725ac25c7c86c42b3686f3be75f Mon Sep 17 00:00:00 2001
From: andy840119 <andy840119@gmail.com>
Date: Sun, 10 Dec 2023 22:27:27 +0800
Subject: [PATCH] Create the TestCaseTextIndexHelper for able to deal with
 time-index format.

---
 .../Helper/TestCaseTextIndexHelper.cs         | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 osu.Framework.Font.Tests/Helper/TestCaseTextIndexHelper.cs

diff --git a/osu.Framework.Font.Tests/Helper/TestCaseTextIndexHelper.cs b/osu.Framework.Font.Tests/Helper/TestCaseTextIndexHelper.cs
new file mode 100644
index 0000000..c3f6107
--- /dev/null
+++ b/osu.Framework.Font.Tests/Helper/TestCaseTextIndexHelper.cs
@@ -0,0 +1,23 @@
+// Copyright (c) karaoke.dev <contact@karaoke.dev>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Text.RegularExpressions;
+using osu.Framework.Graphics.Sprites;
+
+namespace osu.Framework.Font.Tests.Helper;
+
+public class TestCaseTextIndexHelper
+{
+    public static TextIndex ParseTextIndex(string str)
+    {
+        var regex = new Regex("(?<index>[-0-9]+),(?<state>start|end)");
+        var result = regex.Match(str);
+        if (!result.Success)
+            throw new RegexMatchTimeoutException(nameof(str));
+
+        int index = int.Parse(result.Groups["index"].Value);
+        var state = result.Groups["state"].Value == "start" ? TextIndex.IndexState.Start : TextIndex.IndexState.End;
+
+        return new TextIndex(index, state);
+    }
+}