test: 增加单元测试

Author: ArgoZhang

test/UnitTest/Components/DataTableDynamicContextTest.cs

@@ -0,0 +1,38 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the Apache 2.0 License
+// See the LICENSE file in the project root for more information.
+// Maintainer: Argo Zhang([email protected]) Website: https://www.blazor.zone
+
+using System.Data;
+
+namespace UnitTest.Components;
+
+public class DataTableDynamicContextTest : BootstrapBlazorTestBase
+{
+    [Fact]
+    public void UseCache_Ok()
+    {
+        var table = new DataTable();
+        table.Columns.Add("Id", typeof(int));
+        table.Rows.Add(1);
+        table.AcceptChanges();
+
+        var context = new DataTableDynamicContext(table);
+        Assert.True(context.UseCache);
+
+        var data = context.GetItems();
+        Assert.Single(data);
+        Assert.Equal(1, data.First().GetValue("Id"));
+
+        // 增加数据
+        table.Rows.Add(2);
+        var data2 = context.GetItems();
+        Assert.Equal(data, data2);
+
+        // 关闭缓存
+        context.UseCache = false;
+        table.Rows.Add(3);
+        data2 = context.GetItems();
+        Assert.Equal(3, data2.Count());
+    }
+}