public static async Task AssertAsync(
this IExpectExceptionScenarioBuilder builder,
ScenarioRunner runner,
CancellationToken ct = default)
{
var scenario = builder.Build();
var result = await runner.RunAsync(scenario, ct);
switch (result)
{
case ScenarioExpectedExceptionButThrewNoException _:
throw new XunitException("Expected exception but threw no exception");
case ScenarioExpectedExceptionButThrewOtherException threw:
throw new XunitException($"Expected exception but threw {threw.Actual}");
case ScenarioExpectedExceptionButRecordedEvents recorded:
var messageBuilder = new StringBuilder();
messageBuilder.AppendLine("Expected exception but recorded these events:");
foreach (var actual in recorded.Actual)
{
messageBuilder.AppendLine($"\t{actual.Stream} - {actual.Event.GetType().Name} {JsonConvert.SerializeObject(actual.Event, Formatting.Indented)}");
}
throw new XunitException(messageBuilder.ToString());
}
}
public static async Task AssertAsync(
this IExpectEventsScenarioBuilder builder,
ScenarioRunner runner,
CancellationToken ct = default)
{
var scenario = builder.Build();
var result = await runner.RunAsync(scenario, ct);
switch (result)
{
case ScenarioExpectedEventsButThrewException threw:
throw new XunitException($"Expected events but threw {threw.Actual}");
case ScenarioExpectedEventsButRecordedOtherEvents recorded:
var messageBuilder = new StringBuilder();
if (recorded.Scenario.Thens.Length != recorded.Actual.Length)
{
messageBuilder.AppendFormat("Expected {0} events ({1}) but recorded {2} events ({3}).",
recorded.Scenario.Thens.Length,
string.Join(",",
recorded.Scenario.Thens.Select(given => $"[Stream={given.Stream}]Event={given.Event.GetType().Name}")),
recorded.Actual.Length,
string.Join(",",
recorded.Actual.Select(actual => $"[Stream={actual.Stream}]Event={actual.Event.GetType().Name}")));
}
else
{
messageBuilder.AppendLine("Expected events to match but found differences:");
var config = new ComparisonConfig
{
MaxDifferences = int.MaxValue,
MaxStructDepth = 5
};
var comparer = new CompareLogic(config);
var comparison = comparer.Compare(recorded.Scenario.Thens, recorded.Actual);
foreach (var difference in comparison.Differences)
{
messageBuilder.AppendLine("\t" + difference);
}
messageBuilder.AppendLine("Expected:");
foreach (var then in recorded.Scenario.Thens)
{
messageBuilder.AppendLine($"[Stream={then.Stream}]Event={then.Event.GetType().Name}");
messageBuilder.AppendLine(JsonConvert.SerializeObject(then.Event, Formatting.Indented));
}
messageBuilder.AppendLine("Actual:");
foreach (var actual in recorded.Actual)
{
messageBuilder.AppendLine($"[Stream={actual.Stream}]Event={actual.Event.GetType().Name}");
messageBuilder.AppendLine(JsonConvert.SerializeObject(actual.Event, Formatting.Indented));
}
}
throw new XunitException(messageBuilder.ToString());
}
}