C#-Selenium-Retry属性不适用于Selenium超时

我从这篇文章中获得了以下自定义内容：。它工作正常，但当我在Selenium中遇到超时错误时，它就不工作了

WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(5));
            wait.Until(ExpectedConditions.ElementToBeClickable(element));

重试自定义属性：

/// <summary>
/// RetryDynamicAttribute may be applied to test case in order
/// to run it multiple times based on app setting.
/// </summary>
[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
public class RetryDynamicAttribute : RetryAttribute {
    private const int DEFAULT_TRIES = 1;
    static Lazy<int> numberOfRetries = new Lazy<int>(() => {
        int count = 0;
        return int.TryParse(ConfigurationManager.AppSettings["retryTest"], out count) ? count : DEFAULT_TRIES;
    });

    public RetryDynamicAttribute() :
        base(numberOfRetries.Value) {
    }
}

---

如何解决这个问题？

根据此处的文档

努尼特医生

如果测试有意外异常，则返回错误结果并 它不会重试只有断言失败才能触发重试。到 将意外异常转换为断言失败，请参阅

我的

相关的代理只是断言委托 不会引发异常

您需要捕获异常，并在异常不是预期的情况下导致断言失败

WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(5));
Assert.That(() => {
         wait.Until(ExpectedConditions.ElementToBeClickable(element));
     }, Throws.Nothing);

---

因此，上面的代码只是说执行操作，它不应该期望出现异常。如果抛出异常，则它是一个失败的断言。如果属性应用于测试，则将执行重试。

另一个解决方案是实现自己的

RetryAttribute

以捕获WebDriver异常。这样，您就不必更改测试：

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
public class RetryAttributeEx : PropertyAttribute, IWrapSetUpTearDown
{
    private int _count;

    public RetryAttributeEx(int count) : base(count) {
        _count = count;
    }

    public TestCommand Wrap(TestCommand command) {
        return new RetryCommand(command, _count);
    }

    public class RetryCommand : DelegatingTestCommand {

        private int _retryCount;

        public RetryCommand(TestCommand innerCommand, int retryCount)
            : base(innerCommand) {
            _retryCount = retryCount;
        }

        public override TestResult Execute(TestExecutionContext context) {

            for (int count = _retryCount; count-- > 0; ) {

                try {
                    context.CurrentResult = innerCommand.Execute(context);
                }
                catch (WebDriverTimeoutException ex) {
                    if (count == 0)
                      throw;

                    continue;
                }

                if (context.CurrentResult.ResultState.Status != ResultState.Failure.Status)
                    break;

                if (count > 0)
                    context.CurrentResult = context.CurrentTest.MakeTestResult();
            }

            return context.CurrentResult;
        }
    }

}

[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
public class RetryAttributeEx : PropertyAttribute, IWrapSetUpTearDown
{
    private int _count;

    public RetryAttributeEx(int count) : base(count) {
        _count = count;
    }

    public TestCommand Wrap(TestCommand command) {
        return new RetryCommand(command, _count);
    }

    public class RetryCommand : DelegatingTestCommand {

        private int _retryCount;

        public RetryCommand(TestCommand innerCommand, int retryCount)
            : base(innerCommand) {
            _retryCount = retryCount;
        }

        public override TestResult Execute(TestExecutionContext context) {

            for (int count = _retryCount; count-- > 0; ) {

                try {
                    context.CurrentResult = innerCommand.Execute(context);
                }
                catch (WebDriverTimeoutException ex) {
                    if (count == 0)
                      throw;

                    continue;
                }

                if (context.CurrentResult.ResultState.Status != ResultState.Failure.Status)
                    break;

                if (count > 0)
                    context.CurrentResult = context.CurrentTest.MakeTestResult();
            }

            return context.CurrentResult;
        }
    }

}