diff --git a/src/Chapter22.Tests/Listing22.09.Tests.cs b/src/Chapter22.Tests/Listing22.09.Tests.cs
new file mode 100644
index 000000000..cd8f91f68
--- /dev/null
+++ b/src/Chapter22.Tests/Listing22.09.Tests.cs
@@ -0,0 +1,17 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter22.Listing22_09.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = @"ENTER to shut down";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter22.Tests/Listing22.10.Tests.cs b/src/Chapter22.Tests/Listing22.10.Tests.cs
new file mode 100644
index 000000000..322f814a6
--- /dev/null
+++ b/src/Chapter22.Tests/Listing22.10.Tests.cs
@@ -0,0 +1,23 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter22.Listing22_10.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = @"Application started....
+Starting task....
+DoWork() started....
+ Waiting while thread executes...
+DoWork() ending....
+Thread completed
+Application shutting down....";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter22.Tests/Listing22.11.Tests.cs b/src/Chapter22.Tests/Listing22.11.Tests.cs
new file mode 100644
index 000000000..6a1263c8e
--- /dev/null
+++ b/src/Chapter22.Tests/Listing22.11.Tests.cs
@@ -0,0 +1,18 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter22.Listing22_11.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            string expected = $@"Decrement Count = {-32767.01134}
+Main Count = {32767.01134}";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter22.Tests/Listing22.12.Tests.cs b/src/Chapter22.Tests/Listing22.12.Tests.cs
new file mode 100644
index 000000000..316e5aca4
--- /dev/null
+++ b/src/Chapter22.Tests/Listing22.12.Tests.cs
@@ -0,0 +1,18 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter22.Listing22_12.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = @"Decrement Count = *
+Main Count = *";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.ExpectLike(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter23.Tests/Listing23.17.Tests.cs b/src/Chapter23.Tests/Listing23.17.Tests.cs
new file mode 100644
index 000000000..3cda4f5f8
--- /dev/null
+++ b/src/Chapter23.Tests/Listing23.17.Tests.cs
@@ -0,0 +1,17 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter23.Listing23_17.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = @"S5280ft = Smile  ";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter23.Tests/Listing23.18.Tests.cs b/src/Chapter23.Tests/Listing23.18.Tests.cs
new file mode 100644
index 000000000..972f88b76
--- /dev/null
+++ b/src/Chapter23.Tests/Listing23.18.Tests.cs
@@ -0,0 +1,17 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter23.Listing23_18.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = @"S5280ft = Smile  ";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Chapter23.Tests/Listing23.19.Tests.cs b/src/Chapter23.Tests/Listing23.19.Tests.cs
new file mode 100644
index 000000000..194567623
--- /dev/null
+++ b/src/Chapter23.Tests/Listing23.19.Tests.cs
@@ -0,0 +1,17 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter23.Listing23_19.Tests
+{
+    [TestClass]
+    public class ProgramTests
+    {
+        [TestMethod]
+        public void MainTest()
+        {
+            const string expected = "30° 18\' 0\"";
+
+            IntelliTect.TestTools.Console.ConsoleAssert.Expect(
+                expected, Program.Main);
+        }
+    }
+}
\ No newline at end of file