Fix Chapter05 network tests to handle DNS blocking and broader network exceptions

Co-authored-by: BenjaminMichaelis <[email protected]>

Author: Copilot

src/Chapter05.Tests/Listing05.15.PassingCommandLineArgumentsToMain.Tests.cs

@@ -33,7 +33,23 @@ public void Main_IntelliTectIndexHtmlArgs_DownloadFile()
             IntelliTect.TestTools.Console.ConsoleAssert.Expect(
                 expected, () => result = Program.Main(args));
         }
-        catch (AggregateException exception) when (exception.InnerException is System.Net.Http.HttpRequestException)
+        catch (AggregateException exception) when (
+            exception.InnerException is System.Net.Http.HttpRequestException ||
+            exception.InnerException is System.Net.Sockets.SocketException ||
+            exception.InnerException is TaskCanceledException ||
+            exception.InnerException is System.Net.NetworkInformation.NetworkInformationException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (System.Net.Http.HttpRequestException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (System.Net.Sockets.SocketException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (TaskCanceledException)
         {
             Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
         }
@@ -48,7 +64,23 @@ public void Main_GoodArgs_DownloadFile()
         {
             Assert.AreEqual(0, Program.Main(args));
         }
-        catch (AggregateException exception) when (exception.InnerException is System.Net.Http.HttpRequestException)
+        catch (AggregateException exception) when (
+            exception.InnerException is System.Net.Http.HttpRequestException ||
+            exception.InnerException is System.Net.Sockets.SocketException ||
+            exception.InnerException is TaskCanceledException ||
+            exception.InnerException is System.Net.NetworkInformation.NetworkInformationException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your Internet connection.");
+        }
+        catch (System.Net.Http.HttpRequestException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your Internet connection.");
+        }
+        catch (System.Net.Sockets.SocketException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your Internet connection.");
+        }
+        catch (TaskCanceledException)
         {
             Assert.Inconclusive("Unable to download the file.  Check your Internet connection.");
         }

src/Chapter05.Tests/Listing05.33.CustomParameterValidation.Tests.cs

@@ -175,7 +175,23 @@ public void Main_IntelliTectIndexHtmlArgs_DownloadFile()
             IntelliTect.TestTools.Console.ConsoleAssert.Expect(
                 expected, () => result = Program.Main(args));
         }
-        catch (AggregateException exception) when (exception.InnerException is System.Net.Http.HttpRequestException)
+        catch (AggregateException exception) when (
+            exception.InnerException is System.Net.Http.HttpRequestException ||
+            exception.InnerException is System.Net.Sockets.SocketException ||
+            exception.InnerException is TaskCanceledException ||
+            exception.InnerException is System.Net.NetworkInformation.NetworkInformationException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (System.Net.Http.HttpRequestException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (System.Net.Sockets.SocketException)
+        {
+            Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
+        }
+        catch (TaskCanceledException)
         {
             Assert.Inconclusive("Unable to download the file.  Check your internet connection.");
         }