我在弄清楚为什么我无法测试我的driver变量时遇到了麻烦，当我调用null时，它会不断返回Start()。我基本上想访问该变量并对其进行测试。

我当前无法通过的测试：

[TestMethod]
public void Start_Default_IsChrome2()
{
    var dummyManager = new Mock<IRemoteDriver>();
    var mockDriver = new Mock<IWebDriver>();
    dummyManager.Setup(x => x.CreateRemoteWebDriver(new ChromeOptions()))
                .Returns(It.IsAny<RemoteWebDriver>());
    var session = new SauceSession(dummyManager.Object);
    //The Start() keeps returning a null object
    var driver = session.Start();
    var capabilities = driver.Capabilities;
    capabilities.getcapability("browserName").Should().Be("chrome");
}

要嘲笑的依赖性

public interface IRemoteDriver
{
    IWebDriver CreateRemoteWebDriver(ChromeOptions chromeOptions);
}

被测对象

public SauceSession(IRemoteDriver driverManager)
{
    remoteDriverManager = driverManager;
}



public RemoteWebDriver Start()
{
    sauceusername = Environment.GetEnvironmentVariable("SAUCE_username",EnvironmentVariabletarget.User);
    sauceaccessKey = Environment.GetEnvironmentVariable("SAUCE_accESS_KEY",EnvironmentVariabletarget.User);
    sauceOptions = new Dictionary<string,object>
    {
        ["username"] = sauceusername,["accessKey"] = sauceaccessKey
    };

    var chromeOptions = new ChromeOptions
    {
        BrowserVersion = "latest",PlatformName = "Windows 10",UseSpecCompliantProtocol = true
    };
    chromeOptions.AddAdditionalCapability("sauce:options",sauceOptions,true);
    //This keeps returning a null
    return (RemoteWebDriver)remoteDriverManager.CreateRemoteWebDriver(chromeOptions);
}

如果有帮助，则具体实现可以正常工作，并且该测试如下所示：

    [TestMethod]
    public void Start_Default_IsChrome()
    {
        var session = new SauceSession();
        var driver = session.Start();
        var capabilities = ((RemoteWebDriver)driver).Capabilities;
        capabilities.getcapability("browserName").Should().Be("chrome");
    }

除我在此处设置的对象外，其他所有内容均相同：

    public SauceSession()
    {
        remoteDriverManager = new ConcreteRemoteWebDriver();
    }

class ConcreteRemoteWebDriver : IRemoteDriver
{
    public IWebDriver CreateRemoteWebDriver(ChromeOptions chromeOptions)
    {
        return new RemoteWebDriver(new Uri("https://ondemand.saucelabs.com/wd/hub"),chromeOptions.ToCapabilities(),TimeSpan.FromSeconds(600));
    }
}

这是RemoteWebDriver：

public class RemoteWebDriver : IWebDriver,ISearchContext,IDisposable,IJavaScriptExecutor,IFindsById,IFindsByClassname,IFindsByLinkText,IFindsByName,IFindsByTagName,IFindsByXPath,IFindsByPartialLinkText,IFindsByCssSelector,ITakesScreenshot,IHasInputDevices,IHasCapabilities,IHasWebStorage,IHasLocationContext,IHasApplicationCache,IAllowsFileDetection,IHasSessionId,IactionExecutor