public void Undefinable_nullable_int_that_is_empty_is_defined()
{
Undefinable <int?> i = null;
Assert.That(i.IsDefined, Is.True);
Assert.That(i.Value, Is.Null);
}
public void Undefined_int_that_is_undefined_resolves_undefined_values_correctly()
{
Undefinable <int> i = default;
Assert.That(i.IsDefined, Is.False);
Assert.Throws <InvalidOperationException>(() => { var a = i.Value; });
}
public void Undefinable_nullable_int_with_a_value_resolves_equality_correctly()
{
Undefinable <int?> i = 10;
Assert.That(i.IsDefined, Is.True);
Assert.That(i.Value, Is.EqualTo(10));
Assert.That(10, Is.EqualTo(i));
Assert.That(i, Is.EqualTo(new Undefinable <int?>(10)));
Assert.That(i, Is.EqualTo(new Undefinable <int>(10)));
}
private static T GetValue <T>(Undefinable <T> option) => option.GetValueOrDefault(default(T));
private static bool HasValue <T>(Undefinable <T> option) => option.IsDefined;
public void TestNullableInequality(Undefinable <int?> a, Undefinable <int?> b, bool expected)
{
Assert.That(a != b, Is.EqualTo(!expected));
Assert.That(b != a, Is.EqualTo(!expected));
}
public void TestNullableEquality(Undefinable <int?> a, Undefinable <int?> b, bool expected)
{
Assert.That(a == b, Is.EqualTo(expected));
Assert.That(b == a, Is.EqualTo(expected));
}
public void TestNullableAndNonNullableEquality(Undefinable <int?> a, Undefinable <int> b, bool expected)
{
//only .Equals is supported for now
Assert.That(a.Equals(b), Is.EqualTo(expected));
Assert.That(b.Equals(a), Is.EqualTo(expected));
}
public void TestUndefinedSerializationUsingNullables(Undefinable <int?> a, Undefinable <int?> b, String expectedJson)
{
var json = JsonConvert.SerializeObject(new { A = a, B = b }, settings);
Assert.That(json, Is.EqualTo(expectedJson));
}