How not to test the value of a certain property?

Question

I have a class similar to this:

class Foo

{

 public DateTime Created { get; set; }

 // etc. properties

 public Foo() {

   Created = DateTime.Now;

 }

}

And when I run Pex it generates silly code that always fails because:

[TestMethod]

[PexGeneratedBy(typeof(FooTest))]

public void FooTest984()

{

 Foo foo;

 foo = FooFactory.CreateFoo();

 Assert.IsNotNull((object)foo);

 ...

 Assert.AreEqual<int>(17, ((Foo)foo).Created.Day);

 Assert.AreEqual<DayOfWeek>

  (DayOfWeek.Thursday, ((Foo)foo).Created.DayOfWeek);

 Assert.AreEqual<int>(76, ((Foo)foo).Created.DayOfYear);

 Assert.AreEqual<int>(18, ((Foo)foo.Created.Hour);

 Assert.AreEqual<DateTimeKind>

  (DateTimeKind.Local, ((Foo)foo).Created.Kind);

 Assert.AreEqual<int>(71, ((Foo)foo).Created.Millisecond);

 Assert.AreEqual<int>(52, ((Foo)foo).Created.Minute);

 // etc.

}

What is the suggested practice for (skipping of) testing values like this?

Thanks

Val

Answer 1

See here for a discussion of the problem, and information about how to avoid it:

http://social.msdn.microsoft.com/Forums/en/pex/thread/df4435a5-249d-46ce-a0bb-a0216b0f6e77

 

---

Nikolai Tillmann