Xunit retryFact属性如何工作？

Question

我的硒测试由Xunit运行。我在C＃上写测试。某些测试不稳定（尤其是使用鼠标动作的测试）。我在Xunit中找到了retryFactattribute，但找不到任何文档。

我目前的主要问题是：如果我使用[retryfact（delaybetweenretriesms：3000）]？

如果可以的话，请建议我在其中找到有关属性的更多信息的资源。

Answer 1

它似乎是如何使用自定义ixunittestCasediscoverer和xunittestcase的示例。您可以找到示例源代码

Ultimately it's just an attribute with the following attribute attached to it:

[XunitTestCaseDiscoverer("RetryFactExample.RetryFactDiscoverer", "RetryFactExample")]

Which then indirectly references

public override async Task<RunSummary> RunAsync(IMessageSink diagnosticMessageSink,
                                                IMessageBus messageBus,
                                                object[] constructorArguments,
                                                ExceptionAggregator aggregator,
                                                CancellationTokenSource cancellationTokenSource)
{
    var runCount = 0;

    while (true)
    {
        // This is really the only tricky bit: we need to capture and delay messages (since those will
        // contain run status) until we know we've decided to accept the final result;
        var delayedMessageBus = new DelayedMessageBus(messageBus);

        var summary = await base.RunAsync(diagnosticMessageSink, delayedMessageBus, constructorArguments, aggregator, cancellationTokenSource);
        if (aggregator.HasExceptions || summary.Failed == 0 || ++runCount >= maxRetries)
        {
            delayedMessageBus.Dispose();  // Sends all the delayed messages
            return summary;
        }

        diagnosticMessageSink.OnMessage(new DiagnosticMessage("Execution of '{0}' failed (attempt #{1}), retrying...", DisplayName, runCount));
    }
}

我不确定您的问题是否会在单个测试中阻止单个测试3秒钟，但是从这个问题来看，我认为答案可能是“是”。最好在实验上测试这一问题。