public void ReturnsFalseAndNullForUnsuccessfulResult()
{
Result <int?> result = new InvalidOperationError();
Assert.False(result.IsDefined(out var entity));
Assert.Null(entity);
}
public void HandlesNullabilityAnnotationsCorrectly()
{
// Successful value type results
Result <int> integerValue = 1;
Result <int?> nullNullableInteger = (int?)null;
Result <int?> nonNullNullableInteger = 1;
// Unsuccessful value type results
Result <int> failedInteger = new InvalidOperationError();
Result <int?> failedNullableInteger = new InvalidOperationError();
// Successful reference type results
Result <string> stringValue = string.Empty;
Result <string?> nullNullableString = (string?)null;
Result <string?> nonNullNullableString = string.Empty;
// Unsuccessful reference type results
Result <string> failedString = new InvalidOperationError();
Result <string?> failedNullableString = new InvalidOperationError();
// Actual tests
// Valid access to value types
if (integerValue.IsSuccess)
{
Assert.NotNull(integerValue.Entity.ToString());
}
if (nullNullableInteger.IsSuccess)
{
Assert.Null(nullNullableInteger.Entity?.ToString());
}
if (nonNullNullableInteger.IsSuccess)
{
Assert.NotNull(nullNullableInteger.Entity.ToString());
}
// Composite access to value types
if (nonNullNullableInteger is { IsSuccess : true, Entity : not null })
public void ReturnsFalseForUnsuccessfulResult()
{
Result <int?> result = new InvalidOperationError();
Assert.False(result.IsDefined());
}