test: 增加 IsWasm 单元测试

Author: ArgoZhang

test/UnitTest/Extensions/HostEnvironmentExtensionsTest.cs

@@ -0,0 +1,30 @@
+// 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 Microsoft.Extensions.FileProviders;
+using Microsoft.Extensions.Hosting;
+
+namespace UnitTest.Extensions;
+
+public class HostEnvironmentExtensionsTest
+{
+    [Fact]
+    public void IsWasm_Ok()
+    {
+        var hostEnvironment = new MockWasmHostEnvironment();
+        Assert.False(hostEnvironment.IsWasm());
+    }
+
+    class MockWasmHostEnvironment : IHostEnvironment
+    {
+        public string EnvironmentName { get; set; } = "Development";
+
+        public string ApplicationName { get; set; } = "BootstrapBlazor";
+
+        public string ContentRootPath { get; set; } = "";
+
+        public IFileProvider ContentRootFileProvider { get; set; } = null!;
+    }
+}