public void SelectMany_on_Some_and_None_returns_None()
{
var enclosedValue = new NestedOptionals(new Option <string>());
var option = new Option <NestedOptionals>(enclosedValue);
var result =
from value in option
from optionalString in value.OptionString
select optionalString;
Assert.That(result, Is.EqualTo(Option <string> .None));
}
public void SelectMany_on_Some_and_Some_returns_Some()
{
var enclosedValue = Guid.NewGuid().ToString();
var nestedOptional = new NestedOptionals(new Option <string>(enclosedValue));
var option = new Option <NestedOptionals>(nestedOptional);
var result =
from value in option
from optionalString in value.OptionString
select optionalString;
Assert.That(result, Is.EqualTo(Option <string> .Create(enclosedValue)));
}
public void SelectMany_on_Some_and_Some_returns_Some()
{
var enclosedValue = Guid.NewGuid().ToString();
var nestedOptional = new NestedOptionals(new Optional<string>(enclosedValue));
var option = new Optional<NestedOptionals>(nestedOptional);
var result =
from value in option
from optionalString in value.OptionalString
select optionalString;
Assert.That(result, Is.EqualTo(Optional<string>.Create(enclosedValue)));
}
public void SelectMany_on_Some_and_None_returns_None()
{
var enclosedValue = new NestedOptionals(new Optional<string>());
var option = new Optional<NestedOptionals>(enclosedValue);
var result =
from value in option
from optionalString in value.OptionalString
select optionalString;
Assert.That(result, Is.EqualTo(Optional<string>.None));
}
