feat: add self test

Dalamud/Interface/Internal/Windows/SelfTest/AgingSteps/LuminaAgingStep.cs

@@ -0,0 +1,39 @@
+using System.Collections.Generic;
+using System.Linq;
+
+using Dalamud.Utility;
+using Lumina.Excel;
+
+namespace Dalamud.Interface.Internal.Windows.SelfTest.AgingSteps
+{
+    /// <summary>
+    /// Test setup for Lumina.
+    /// </summary>
+    /// <typeparam name="T">ExcelRow to run test on.</typeparam>
+    internal class LuminaAgingStep<T> : IAgingStep
+        where T : ExcelRow
+    {
+        private int step = 0;
+        private List<T> rows;
+
+        /// <inheritdoc/>
+        public string Name => "Test Lumina";
+
+        /// <inheritdoc/>
+        public SelfTestStepResult RunStep(Dalamud dalamud)
+        {
+            this.rows ??= dalamud.Data.GetExcelSheet<T>().ToList();
+
+            Util.ShowObject(this.rows[this.step]);
+
+            this.step++;
+            return this.step >= this.rows.Count ? SelfTestStepResult.Pass : SelfTestStepResult.Waiting;
+        }
+
+        /// <inheritdoc/>
+        public void CleanUp(Dalamud dalamud)
+        {
+            // ignored
+        }
+    }
+}