Add unit tests for GeneralUpdate.Core

src/c#/GeneralUpdate.sln

@@ -31,56 +31,162 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExtensionTest", "ExtensionT
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GeneralUpdate.Ext", "GeneralUpdate.Ext\GeneralUpdate.Ext.csproj", "{27028918-925E-45D4-BD72-199349B6E6AA}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CoreTest", "..\..\tests\CoreTest\CoreTest.csproj", "{D8B45203-B939-4628-AC77-C477A4AC5F45}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
 		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|x64.Build.0 = Debug|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Debug|x86.Build.0 = Debug|Any CPU
 		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|x64.ActiveCfg = Release|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|x64.Build.0 = Release|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|x86.ActiveCfg = Release|Any CPU
+		{35BFF228-5EE4-49A6-B721-FB0122E967A0}.Release|x86.Build.0 = Release|Any CPU
 		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|x64.Build.0 = Debug|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Debug|x86.Build.0 = Debug|Any CPU
 		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|x64.ActiveCfg = Release|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|x64.Build.0 = Release|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|x86.ActiveCfg = Release|Any CPU
+		{BAEFF926-6B2C-46F1-BB73-AA2AB1355565}.Release|x86.Build.0 = Release|Any CPU
 		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|x64.Build.0 = Debug|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Debug|x86.Build.0 = Debug|Any CPU
 		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|x64.ActiveCfg = Release|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|x64.Build.0 = Release|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|x86.ActiveCfg = Release|Any CPU
+		{40BDA496-7614-4213-92D0-3B1B187675D3}.Release|x86.Build.0 = Release|Any CPU
 		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|x64.Build.0 = Debug|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Debug|x86.Build.0 = Debug|Any CPU
 		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|x64.ActiveCfg = Release|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|x64.Build.0 = Release|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|x86.ActiveCfg = Release|Any CPU
+		{E1F9FF93-CA63-4A9C-82F0-450F09ED81F9}.Release|x86.Build.0 = Release|Any CPU
 		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|x64.Build.0 = Debug|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Debug|x86.Build.0 = Debug|Any CPU
 		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|x64.ActiveCfg = Release|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|x64.Build.0 = Release|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|x86.ActiveCfg = Release|Any CPU
+		{7779FB4A-D121-48CC-B033-C3D36BD5D4FF}.Release|x86.Build.0 = Release|Any CPU
 		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|x64.Build.0 = Debug|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Debug|x86.Build.0 = Debug|Any CPU
 		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|x64.ActiveCfg = Release|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|x64.Build.0 = Release|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|x86.ActiveCfg = Release|Any CPU
+		{D14E59CD-404B-467B-9C6D-91EFC5994D37}.Release|x86.Build.0 = Release|Any CPU
 		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|x64.Build.0 = Debug|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Debug|x86.Build.0 = Debug|Any CPU
 		{49D0687D-1321-48E9-84C3-936B10532367}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{49D0687D-1321-48E9-84C3-936B10532367}.Release|Any CPU.Build.0 = Release|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Release|x64.ActiveCfg = Release|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Release|x64.Build.0 = Release|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Release|x86.ActiveCfg = Release|Any CPU
+		{49D0687D-1321-48E9-84C3-936B10532367}.Release|x86.Build.0 = Release|Any CPU
 		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|x64.Build.0 = Debug|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Debug|x86.Build.0 = Debug|Any CPU
 		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|x64.ActiveCfg = Release|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|x64.Build.0 = Release|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|x86.ActiveCfg = Release|Any CPU
+		{1BA0EEDF-D75A-49E9-9244-EA32DFA130B3}.Release|x86.Build.0 = Release|Any CPU
 		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|x64.Build.0 = Debug|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Debug|x86.Build.0 = Debug|Any CPU
 		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|x64.ActiveCfg = Release|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|x64.Build.0 = Release|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|x86.ActiveCfg = Release|Any CPU
+		{7B8E164F-C2D8-4C5F-8E20-450FB56AEB34}.Release|x86.Build.0 = Release|Any CPU
 		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|x64.Build.0 = Debug|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Debug|x86.Build.0 = Debug|Any CPU
 		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|x64.ActiveCfg = Release|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|x64.Build.0 = Release|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|x86.ActiveCfg = Release|Any CPU
+		{3FA78F9A-A942-4F7E-A30D-70DF42E8A83D}.Release|x86.Build.0 = Release|Any CPU
 		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|x64.Build.0 = Debug|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Debug|x86.Build.0 = Debug|Any CPU
 		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|x64.ActiveCfg = Release|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|x64.Build.0 = Release|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|x86.ActiveCfg = Release|Any CPU
+		{27028918-925E-45D4-BD72-199349B6E6AA}.Release|x86.Build.0 = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|x64.Build.0 = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Debug|x86.Build.0 = Debug|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|x64.ActiveCfg = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|x64.Build.0 = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|x86.ActiveCfg = Release|Any CPU
+		{D8B45203-B939-4628-AC77-C477A4AC5F45}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

tests/CoreTest/Bootstrap/GeneralUpdateBootstrapTests.cs

@@ -0,0 +1,210 @@
+using GeneralUpdate.Common.Download;
+using GeneralUpdate.Common.Internal;
+using GeneralUpdate.Common.Shared.Object;
+using GeneralUpdate.Core;
+using Xunit;
+
+namespace CoreTest.Bootstrap
+{
+    /// <summary>
+    /// Contains test cases for the GeneralUpdateBootstrap class.
+    /// Tests the main orchestrator for platform-agnostic update process.
+    /// </summary>
+    public class GeneralUpdateBootstrapTests
+    {
+        /// <summary>
+        /// Tests that GeneralUpdateBootstrap can be instantiated.
+        /// </summary>
+        [Fact]
+        public void Constructor_CreatesInstance()
+        {
+            // Act
+            var bootstrap = new GeneralUpdateBootstrap();
+
+            // Assert
+            Assert.NotNull(bootstrap);
+        }
+
+        /// <summary>
+        /// Tests that SetConfig returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void SetConfig_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            var configInfo = new Configinfo
+            {
+                InstallPath = "/test/install",
+                MainAppName = "TestApp.exe",
+                UpdateUrl = "https://example.com/update",
+                ClientVersion = "1.0.0"
+            };
+
+            // Act
+            var result = bootstrap.SetConfig(configInfo);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that SetFieldMappings returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void SetFieldMappings_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            var fieldMappings = new Dictionary<string, string>
+            {
+                { "field1", "value1" }
+            };
+
+            // Act
+            var result = bootstrap.SetFieldMappings(fieldMappings);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that SetCustomSkipOption returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void SetCustomSkipOption_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Func<bool> skipFunc = () => false;
+
+            // Act
+            var result = bootstrap.SetCustomSkipOption(skipFunc);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that AddListenerMultiAllDownloadCompleted returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void AddListenerMultiAllDownloadCompleted_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, MultiAllDownloadCompletedEventArgs> callback = (sender, e) => { };
+
+            // Act
+            var result = bootstrap.AddListenerMultiAllDownloadCompleted(callback);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that AddListenerMultiDownloadCompleted returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void AddListenerMultiDownloadCompleted_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, MultiDownloadCompletedEventArgs> callback = (sender, e) => { };
+
+            // Act
+            var result = bootstrap.AddListenerMultiDownloadCompleted(callback);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that AddListenerMultiDownloadError returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void AddListenerMultiDownloadError_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, MultiDownloadErrorEventArgs> callback = (sender, e) => { };
+
+            // Act
+            var result = bootstrap.AddListenerMultiDownloadError(callback);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that AddListenerMultiDownloadStatistics returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void AddListenerMultiDownloadStatistics_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, MultiDownloadStatisticsEventArgs> callback = (sender, e) => { };
+
+            // Act
+            var result = bootstrap.AddListenerMultiDownloadStatistics(callback);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that AddListenerException returns the bootstrap instance for chaining.
+        /// </summary>
+        [Fact]
+        public void AddListenerException_ReturnsBootstrapInstance()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, ExceptionEventArgs> callback = (sender, e) => { };
+
+            // Act
+            var result = bootstrap.AddListenerException(callback);
+
+            // Assert
+            Assert.Same(bootstrap, result);
+        }
+
+        /// <summary>
+        /// Tests that null callback throws ArgumentNullException.
+        /// </summary>
+        [Fact]
+        public void AddListener_WithNullCallback_ThrowsArgumentNullException()
+        {
+            // Arrange
+            var bootstrap = new GeneralUpdateBootstrap();
+            Action<object, ExceptionEventArgs>? callback = null;
+
+            // Act & Assert
+            Assert.Throws<ArgumentNullException>(() => bootstrap.AddListenerException(callback!));
+        }
+
+        /// <summary>
+        /// Tests method chaining pattern for configuration.
+        /// </summary>
+        [Fact]
+        public void MethodChaining_ConfigureBootstrap_ReturnsCorrectInstance()
+        {
+            // Arrange & Act
+            var bootstrap = new GeneralUpdateBootstrap()
+                .SetConfig(new Configinfo
+                {
+                    InstallPath = "/test/install",
+                    MainAppName = "TestApp.exe",
+                    UpdateUrl = "https://example.com/update",
+                    ClientVersion = "1.0.0"
+                })
+                .SetFieldMappings(new Dictionary<string, string> { { "key", "value" } })
+                .SetCustomSkipOption(() => false)
+                .AddListenerException((sender, e) => { });
+
+            // Assert
+            Assert.NotNull(bootstrap);
+        }
+    }
+}