test: 增加单元测试

Author: ArgoZhang

test/UnitTest/Components/FilterProviderTest.cs

@@ -0,0 +1,36 @@
+// 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(argo@live.ca) Website: https://www.blazor.zone
+
+namespace UnitTest.Components;
+
+public class FilterProviderTest : BootstrapBlazorTestBase
+{
+    [Fact]
+    public async Task FilterProvider_Ok()
+    {
+        var cut = Context.RenderComponent<FilterProvider>(pb =>
+        {
+            pb.Add(a => a.ShowMoreButton, true);
+            pb.AddChildContent<MockFilter>();
+        });
+
+        var filter = cut.FindComponent<MockFilter>();
+        var context = filter.Instance.GetFilterContext();
+        Assert.NotNull(context);
+        Assert.Equal(0, context.Count);
+
+        // 点击 +
+        var plus = cut.Find(".card-footer button");
+        await cut.InvokeAsync(() => plus.Click());
+        context = filter.Instance.GetFilterContext();
+        Assert.NotNull(context);
+        Assert.Equal(1, context.Count);
+    }
+
+    class MockFilter : StringFilter
+    {
+        public FilterContext? GetFilterContext() => FilterContext;
+    }
+}