public void From_if_predicate_is_true_returns_ok_ResultWithError()
{
var error = "error";
var result = ResultWithError.From(() => true, error);
result.IsSuccess.ShouldBeTrue();
}
public void From_if_predicate_is_false_returns_fail_ResultWithError_with_error()
{
var error = "error";
var result = ResultWithError.From(() => false, error);
result.IsFailure.ShouldBeTrue();
result.Error.ShouldBe(error);
}