public void CtorTest ()
{
LookupBindingPropertiesAttribute a, b, c, d;
a = new LookupBindingPropertiesAttribute ();
Assert.IsNull (a.DataSource, "#A1");
Assert.IsNull (a.DisplayMember, "#A2");
Assert.IsNull (a.ValueMember, "#A3");
Assert.IsNull (a.LookupMember, "#A4");
b = new LookupBindingPropertiesAttribute ("aa", "bb", "cc", "dd");
Assert.AreSame ("aa", b.DataSource, "#B1");
Assert.AreSame ("bb", b.DisplayMember, "#B2");
Assert.AreSame ("cc", b.ValueMember, "#B3");
Assert.AreSame ("dd", b.LookupMember, "#B4");
c = new LookupBindingPropertiesAttribute ("aa", "bb", "cc", "dd");
Assert.AreEqual ("aa", c.DataSource, "#C1");
Assert.AreEqual ("bb", c.DisplayMember, "#C2");
Assert.AreEqual ("cc", c.ValueMember, "#C3");
Assert.AreEqual ("dd", c.LookupMember, "#C4");
Assert.IsTrue (b.Equals (c), "#Eq1");
Assert.AreEqual (b.GetHashCode (), c.GetHashCode (), "#Hash");
d = LookupBindingPropertiesAttribute.Default;
Assert.IsNull (d.DataSource, "#D1");
Assert.IsNull (d.DisplayMember, "#D2");
Assert.IsNull (d.ValueMember, "#D3");
Assert.IsNull (d.LookupMember, "#D4");
Assert.IsTrue (d.Equals (a), "#Eq2");
Assert.IsFalse (a.Equals (b), "#Eq3");
}