public void TestUserInfoEquality()
{
// Object setup
UserInfo u1 = new UserInfo("Foo", "Bar", "Baz");
UserInfo u2 = new UserInfo("Foo", "Bar", "Baz");
UserInfo u3 = new UserInfo("Hello", "World", "Foobar");
UserInfo u4 = new UserInfo("Hello", "World", "Foobar");
UserInfo u5 = null;
UserInfo u6 = u1;
// Equality
Assert.IsTrue(UserInfo.Equals(u1, u2));
Assert.IsTrue(u1.Equals(u2));
Assert.IsTrue(u1 == u2);
Assert.IsTrue(UserInfo.Equals(u3, u4));
Assert.IsTrue(u3.Equals(u4));
Assert.IsTrue(u3 == u4);
// Inequality
Assert.IsFalse(UserInfo.Equals(u1, u3));
Assert.IsFalse(u1.Equals(u3));
Assert.IsTrue(u1 != u3);
Assert.IsFalse(UserInfo.Equals(u2, u4));
Assert.IsFalse(u2.Equals(u4));
Assert.IsTrue(u2 != u4);
// Checks against null objects
Assert.IsFalse(UserInfo.Equals(u1, u5));
Assert.IsFalse(UserInfo.Equals(u5, u1));
Assert.IsTrue(u1 != u5);
Assert.IsTrue(u5 != u1);
// Checks against null
Assert.IsFalse(u1.Equals(null));
Assert.IsTrue(UserInfo.Equals(u5, null));
Assert.IsTrue(UserInfo.Equals(null, u5));
Assert.IsTrue(u5 == null);
Assert.IsTrue(null == u5);
// Checks against self
Assert.IsTrue(u1.Equals(u6));
// Hash codes are equal;
Assert.IsTrue(u1.GetHashCode() == u2.GetHashCode());
Assert.IsTrue(u3.GetHashCode() == u4.GetHashCode());
}
private static bool EqualsHelper(UserInfo a, UserInfo b)
{
Debug.Assert(a != null && b != null);
return a.Nick == b.Nick && a.User == b.User && a.RealName == b.RealName;
}
public static bool Equals(UserInfo a, UserInfo b)
{
return Object.ReferenceEquals(a, b) || (!Object.ReferenceEquals(a, null) && !Object.ReferenceEquals(b, null) && UserInfo.EqualsHelper(a, b));
}