UnitTest

UnitTest.cs

using System;
using System.IO;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace MyTests
{
    [TestClass]
    public class UnitTest1
    {
        private const string LogFileName = "TestOutputLog.txt";
        private static StreamWriter? _logWriter;

        /// <summary>
        /// Test.txt 运行结果顺序:
        /// MyClassInitialize
        /// MyTestInitialize
        /// TestMethod2
        /// MyTestCleanup
        /// MyTestInitialize
        /// TestMethod3
        /// MyTestCleanup
        /// MyTestInitialize
        /// TestMethod1
        /// MyTestCleanup
        /// MyClassCleanup
        /// </summary>

        [ClassInitialize(InheritanceBehavior.BeforeEachDerivedClass)]
        public static void MyClassInitialize(TestContext testContext)
        {
            string logFilePath = Path.Combine(testContext.TestRunResultsDirectory ?? AppDomain.CurrentDomain.BaseDirectory, LogFileName);
            
            try
            {
                _logWriter = new StreamWriter(logFilePath, false);
                _logWriter.WriteLine("MyClassInitialize");
                _logWriter.Flush();
            }
            catch (Exception ex)
            {
                testContext.WriteLine($"Error during ClassInitialize: {ex.Message}");
                _logWriter?.Dispose();
                _logWriter = null;
                Assert.Inconclusive($"Failed to initialize log file at {logFilePath}: {ex.Message}");
            }
        }

        [ClassCleanup()]
        public static void MyClassCleanup()
        {
            if (_logWriter == null) return;
            
            _logWriter.WriteLine("MyClassCleanup");
            _logWriter.Flush();
            
            _logWriter.Dispose();
            _logWriter = null; 
        }

        [TestInitialize()]
        public void MyTestInitialize()
        {
            _logWriter?.WriteLine("MyTestInitialize");
            _logWriter?.Flush();
        }

        [TestCleanup()]
        public void MyTestCleanup()
        {
            _logWriter?.WriteLine("MyTestCleanup");
            _logWriter?.Flush();
        }

        [TestMethod]
        public void TestMethod1()
        {
            _logWriter?.WriteLine("TestMethod1");
            _logWriter?.Flush();
        }

        [TestMethod]
        public void TestMethod2()
        {
            _logWriter?.WriteLine("TestMethod2");
            _logWriter?.Flush();
        }

        [TestMethod]
        public void TestMethod3()
        {
            _logWriter?.WriteLine("TestMethod3");
            _logWriter?.Flush();
        }
    }
}