fix: 4.24 Logic and tests (#758)

Fixes #737

Errata.md

@@ -37,4 +37,5 @@ Zhou Jing | 18 | 926-927 | Change 'LastName' references to be 'FirstName' in par
 Jinhang He | 5 | 255 | Edit listing 5.20 to used `image[index]` for the second print statement
 Zhou Jing | 18 | 908 | Change comment in Listing 18.21 to "Restrict the attribute to properties and fields" from "Restrict the attribute to properties and methods"
 Zhou Jing | 23 | 1080 | Change "DWORD flProtect); // The type of memory allocation" to "// The type of memory protection"
-Zhou Jing | 22 | 1065 - 1066 | Changed 'Thread' to 'Task' and "Application exiting" to "Application shutting down"
+Zhou Jing | 22 | 1065 - 1066 | Changed 'Thread' to 'Task' and "Application exiting" to "Application shutting down"
+Zhou Jing | 4 | 161 | Fix `input < 9` to `input < 0` in Listing 4.24

src/Chapter04.Tests/Listing04.24.Tests.cs

@@ -6,13 +6,13 @@ namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter04.Listing04_24.Tests;
 public class ProgramTests
 {
     [TestMethod]
-    public void Main_Input8_ExitProgram()
+    public void Main_InputNegative1_ExitProgram()
     {
         const string expected =
             "Exiting";
 
         ConsoleAssert.Expect(
-            expected, ()=>Program.Main("8"));
+            expected, ()=>Program.Main("-1"));
     }
 
     [TestMethod]
@@ -24,4 +24,14 @@ public void Main_Input10_ProgramDoesNotExit()
         ConsoleAssert.Expect(
             expected, ()=>Program.Main("10"));
     }
+
+    [TestMethod]
+    public void Main_Input0_ProgramDoesNotExit()
+    {
+        const string expected =
+            "";
+
+        ConsoleAssert.Expect(
+            expected, () => Program.Main("0"));
+    }
 }

src/Chapter04/Listing04.24.NoCodeBlock.cs

@@ -7,10 +7,10 @@ public static void Main(params string[] args)
         int input = int.Parse(args[0]);
 
         #region INCLUDE
-        if (input < 9)
+        if (input < 0)
             #region HIGHLIGHT
             Console.WriteLine("Exiting");
-        #endregion HIGHLIGHT
+            #endregion HIGHLIGHT
         #endregion INCLUDE
     }
 }