public void adding_an_error_and_a_warning_results_in_an_error()
{
var result_1 =
PartialResult <int>
.Warning("warn")
.Failure("err")
.Failure(new Exception("ex"));
var result_2 =
PartialResult <int>
.Failure("fail")
.Warning("warn");
var result_3 =
PartialResult <int>
.Failure(new Exception("fail"))
.Warning("warn");
Assert.That(result_1.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(result_2.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(result_3.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(string.Join(",", result_1.CauseMessages), Is.EqualTo("warn,err,ex"));
Assert.That(string.Join(",", result_2.CauseMessages), Is.EqualTo("fail,warn"));
Assert.That(string.Join(",", result_3.CauseMessages), Is.EqualTo("fail,warn"));
}
public void adding_success_and_failure_results_in_failure()
{
var result_1 = PartialResult <int> .Success(1).Failure("err");
var result_2 = PartialResult.Success(2).Failure("fail");
var result_3 = PartialResult <int> .Failure("fail").Success(1);
Assert.That(result_1.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(result_2.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(result_3.State, Is.EqualTo(PartialResultState.Failed));
}
public void can_change_the_contained_type_of_a_failure_result_to_help_error_propagation()
{
var expected = new Exception("hello");
var original = PartialResult <int> .Failure(expected);
// ReSharper disable SuggestVarOrType_Elsewhere
PartialResult <string> propagated_1 = original.PropagateFailure <string>();
PartialResult <float> propagated_2 = propagated_1.PropagateFailure <float>();
// ReSharper restore SuggestVarOrType_Elsewhere
Assert.That(propagated_2.Causes.Single(), Is.EqualTo(expected));
}
public void failure_of_nothing_has_a_shortcut()
{
var result_1 = PartialResult.Failure("err");
var result_2 = PartialResult.Failure(new Exception("err"));
Assert.That(result_1.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(result_2.State, Is.EqualTo(PartialResultState.Failed));
Assert.That(string.Join(",", result_1.CauseMessages), Is.EqualTo("err"));
Assert.That(string.Join(",", result_2.CauseMessages), Is.EqualTo("err"));
Assert.That(result_1.ResultData, Is.EqualTo(Nothing.Instance));
Assert.That(result_2.ResultData, Is.EqualTo(Nothing.Instance));
}