public bool Equals(INotification <T> x, INotification <T> y)
{
if (x == null && y == null)
{
return(true);
}
if (x == null || y == null)
{
return(false);
}
if (x.Kind != y.Kind)
{
return(false);
}
if (x.HasPredicate)
{
return(x.Equals(y));
}
else if (y.HasPredicate)
{
return(y.Equals(x));
}
else
{
return(x.Kind switch
{
Protocol.NotificationKind.OnCompleted => x.Equals(y),
Protocol.NotificationKind.OnError => x.Equals(y),
Protocol.NotificationKind.OnNext => x.HasValue && y.HasValue && _valueComparer.Equals(x.Value, y.Value),
_ => throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "Unexpected notification kind '{0}'.", x.Kind)),
});
