添加项目文件。

TestProject1/TestProject1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="HslCommunication" Version="12.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.8" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.8" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
+  </ItemGroup>
+
+</Project>

TestProject1/UnitTest1.cs

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+using HslCommunication.Profinet.Siemens;
+
+namespace TestProject1
+{
+    [TestClass]
+    public class UnitTest1
+    {
+        [TestMethod]
+        public void TestMethod1()
+        {
+            SiemensS7Net plc_Conv = new SiemensS7Net(SiemensPLCS.S1500, "127.0.0.1");
+            plc_Conv.ConnectTimeOut = 3;
+            OperateResult res = plc_Conv.ConnectServer();
+
+            if (res.IsSuccess)
+            {
+                Console.WriteLine(1);
+            }
+            else
+            {
+                Console.WriteLine(2);
+            }
+
+            Console.ReadKey();
+        }
+
+    }
+
+
+
+}

TestProject1/Usings.cs

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+global using Microsoft.VisualStudio.TestTools.UnitTesting;
+global using HslCommunication;