public void double_names_are_not_added()
{
NameSelection selection = Selection.Setup()
.WithEvents(Selection.New())
.Handle(new AddNames
{
Id = Selection.Id,
Names = new[] { "Beatrix", "Indi" },
})
.AssertIsValid(
ValidationMessage.Warn("Some names occurred multiple times: Indi."));
Assert.AreEqual(11, selection.Names.Count);
}
private Result <NameSelection> ShouldBeDistinct(string[] names)
{
var doubles = names.Where(name => Names.Contains(name)).ToArray();
if (doubles.Length == names.Length)
{
return(Result.WithMessages <NameSelection>(ValidationMessage.Error(Message.NoNewNames)));
}
return(doubles.Any()
? Result.For(this, ValidationMessage.Warn(string.Format(
CultureInfo.CurrentCulture,
Message.DoubleNames,
string.Join(", ", doubles.OrderBy(n => n)))))
: Result.For(this));
}
