Question

我试图创建一个简单的装饰器，当测试失败时会截取屏幕截图。

我将以下内容用作基类，因此可以轻松引用与测试相关联的webdriver实例。

public class SeleniumBaseTest {
    public IWebDriver Driver;

    public IWebDriver NewWebdriver() {
       Driver = WebDriverFactory.NewDriver();
       return Driver;
    }

    public void TakeScreenShot() { 
        //code to take screenshot.
    }
}

所以到目前为止，我已经能够创建一个装饰器来在测试失败后执行操作。但是我还没弄明白如何获取当前的测试类实例，以便我可以将webdriver关联起来。

[AttributeUsage(AttributeTargets.Method)]
public class ScreenShotOnError: Attribute, ITestAction
{

    public void BeforeTest(TestDetails details)
    {
        // do nothing
    }

    public void AfterTest(TestDetails details)
    {
        switch (TestContext.CurrentContext.Result.Status)
        {
            case TestStatus.Failed:
            case TestStatus.Inconclusive:
                var context = TestContext.CurrentContext;
                Console.WriteLine("Test failed hook running.");
                Console.WriteLine(context);
                // I need to figure out how to access the test instance.
                // _SeleniumBaseTestInstance.TakeScreenShot();
                break;
        }
    }


    public ActionTargets Targets
    {
        get { return ActionTargets.Test; }
    }
}

这个基础测试和装饰器的用法就像，

[TestFixture]
class FtwWebScreenShotTestActionTest:SeleniumBaseTest 
{

    [Test]        
    [ScreenShotOnError]
    public void Test()
    {
        var driver = NewWebdriver();
        // perform test actions
    }

}

请帮我弄清楚如何从方法装饰器访问包含类。

Answer 1

看起来细节包含TestFixture，它是我想要的类的实例。

 public void AfterTest(TestDetails details)
        {
            switch (TestContext.CurrentContext.Result.Status)
            {
                case TestStatus.Failed:
                case TestStatus.Inconclusive:
                    try
                    {
                        (details.Fixture as SeleniumBaseTest).TakeScreenShot();
                    }
                    catch (NullReferenceException)
                    {
                        throw new TypeAccessException("This decorator should only be used with {0}" + typeof(SeleniumBaseTest).Name);
                    }
                    break;
            }
        }

使用Nunit操作属性时如何访问测试方法的实例类？

1 个答案: