Rework logic slightly

src/Chapter19.Tests/Listing19.07.Tests.cs

@@ -1,5 +1,4 @@
-
-namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter19.Listing19_07.Tests;
+namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter19.Listing19_07.Tests;
 
 [TestClass]
 public class ProgramTests
@@ -8,14 +7,21 @@ public class ProgramTests
     public void ValueTaskAsyncReturnTest()
     {
         string expected =
-@"*:*:Sleeping for 2000 ms
-*:*:Throwing exception.
-*:*:Event handler starting
-*:*:Sleeping for 4000 ms
-*:*:Awake
-*:*:Finally block running.";
+@"Sleeping for 2000 ms
+Throwing exception.
+Event handler starting
+Sleeping for 4000 ms
+Awake
+Finally block running.";
 
-        IntelliTect.TestTools.Console.ConsoleAssert.ExpectLike(expected,
-        Program.Main);
+        string output = IntelliTect.TestTools.Console.ConsoleAssert.Execute(string.Empty,
+        Program.Main).TrimEnd();
+
+        // Assert that all expected lines are present.
+        Assert.IsTrue(expected.Split(Environment.NewLine).All(output.Contains));
+
+        // Assert that the thread ID (first number in each line) is not the same for all lines.
+        Assert.AreEqual(2, output.Split(Environment.NewLine).Select(
+            line => line.Split(':')[0]).Distinct().Count());
     }
 }