test: 更新单元测试

Author: ArgoZhang

test/UnitTest/Components/BreadcrumbsTest.cs

@@ -13,14 +13,15 @@ public void ButtonStyle_Ok()
         var DataSource = new List<BreadcrumbItem>
         {
             new("Library"),
-            new("Data")
+            new("Data", "", "cssClass")
         };
 
         var cut = Context.RenderComponent<Breadcrumb>(pb =>
         {
             pb.Add(b => b.Value, DataSource);
         });
         Assert.Contains("Library", cut.Markup);
+        Assert.Contains("class=\"breadcrumb-item cssClass\"", cut.Markup);
         Assert.DoesNotContain("href", cut.Markup);
 
         DataSource.Add(new BreadcrumbItem("Home", "https://www.blazor.zone/"));