public async Task <object> RunAsync(ExpectEventsScenario scenario, CancellationToken ct = default)
{
var checkpoint = await WriteGivens(scenario.Givens);
var exception = await Catch.Exception(() => _resolver(scenario.When)(scenario.When, ct));
if (exception != null)
{
return(scenario.ButThrewException(exception));
}
var recordedEvents = await ReadThens(checkpoint);
var config = new ComparisonConfig
{
MaxDifferences = int.MaxValue,
MaxStructDepth = 5
};
var comparer = new CompareLogic(config);
var expectedEvents = Array.ConvertAll(scenario.Thens,
then => new RecordedEvent(_converter(new StreamName(then.Stream)), then.Event));
var result = comparer.Compare(expectedEvents, recordedEvents);
if (result.AreEqual)
{
return(scenario.Pass());
}
return(scenario.ButRecordedOtherEvents(recordedEvents));
}
public async Task WriteAsync(ExpectEventsScenario scenario)
{
if (scenario == null)
{
throw new ArgumentNullException(nameof(scenario));
}
await Writer.WriteLineAsync("Given");
await Writer.WriteLineAsync("");
foreach (var given in scenario.Givens)
{
await Writer.WriteLineAsync(string.Format("\t[{0}] {1}", given.Stream, Translator.Translate(given.Event)));
}
await Writer.WriteLineAsync("When");
await Writer.WriteLineAsync("");
await Writer.WriteLineAsync(string.Format("\t{0}", Translator.Translate(scenario.When.Body)));
// foreach (var header in scenario.When.Head)
// {
// await Writer.WriteLineAsync(string.Format("\t{0}", Translator.Translate(header)));
// }
await Writer.WriteLineAsync("Then");
await Writer.WriteLineAsync("");
foreach (var then in scenario.Thens)
{
await Writer.WriteLineAsync(string.Format("\t[{0}] {1}", then.Stream, Translator.Translate(then.Event)));
}
}
public ScenarioExpectedEventsButThrewException(ExpectEventsScenario scenario, Exception actual)
{
Scenario = scenario ?? throw new ArgumentNullException(nameof(scenario));
Actual = actual ?? throw new ArgumentNullException(nameof(actual));
}
public ScenarioExpectedEventsButRecordedOtherEvents(ExpectEventsScenario scenario, RecordedEvent[] actual)
{
Scenario = scenario ?? throw new ArgumentNullException(nameof(scenario));
Actual = actual ?? throw new ArgumentNullException(nameof(actual));
}
public ExpectEventsScenarioPassed(ExpectEventsScenario scenario)
{
Scenario = scenario ?? throw new ArgumentNullException(nameof(scenario));
}