public void Test(PropertyInfo property, TsZeroType expected)
{
var handler = NullabilityHandlerResolver.FromConfig(Config);
var actual = handler.GetTsNullability(property);
Assert.That(actual, Is.EqualTo(expected));
}
protected static IEnumerable <TestCaseData> EnumerateTestCases()
{
var props = typeof(TCases).GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var p in props)
{
var attrs = p.GetCustomAttributes(inherit: false);
var optional = attrs.Any(x => x.GetType() == typeof(ExpectOptionalAttribute));
var nullable = attrs.Any(x => x.GetType() == typeof(ExpectNullableAttribute));
var propName = p.Name;
var expected = TsZeroType.OptionalNullable(nullable, optional);
yield return(new TestCaseData(p, expected)
{
TestName = propName
});
}
}
public TsZeroType?Required()
{
var required =
_attributeValue
?.GetType()
.GetProperty("Required", BindingFlags.Public | BindingFlags.Instance)
?.GetValue(_attributeValue);
if (required == null)
{
return(null);
}
int requiredValue;
try
{
requiredValue = (int)required;
}
catch (InvalidCastException)
{
return(null);
}
// TODO: consider handling of NullValueHandling and DefaultValueHandling enums
// below are values of Newtonsoft.Json.Required attribute.
// They may change between versions of course, but I believe there's a really small chance of this to happen
// The property is not required. The default state.
const int @default = 0;
// The property must be defined in JSON but can be a null value.
const int allowNull = 1;
// The property must be defined in JSON and cannot be a null value.
const int always = 2;
// The property is not required but it cannot be a null value.
const int disallowNull = 3;
return(requiredValue switch
{
@default => TsZeroType.OptionalNullable() /* if jsonAttribute, then jsonAttribute all the way. So Default allows nulls for value types too */,
allowNull => TsZeroType.Nullable(),
always => TsZeroType.None(),
disallowNull => TsZeroType.Optional(),
{ } unknown => throw new InvalidOperationException($"Unknown value {unknown} for Newtonsoft.Json.Required enum")
});
