Why are inner class not public when viewed in reflection?

Question

AKA why does this test fail?

[TestFixture]
public class Tests
{
    [Test]
    public void InnerClassShouldBePublic()
    {
        Assert.IsTrue(typeof (InnerClass).IsPublic);
    }

    public class InnerClass
    {
    }

}

Answer 1

It fails because nested types are not considered Public, they are considered NestedPublic instead.

From the IsPublic() MSDN documentation:

Do not use with nested types; use IsNestedPublic instead.