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"); }