StdOut充满了'C：\ fakepath'警告，整数除法可能会慢得多，如果可能，请通过C＃使用Selenium尝试使用uint

Question

我正在使用Selenium Firefox Web驱动程序。它工作正常，但是当我使用“ dotnet run”运行命令行时，命令行上出现了一些我未解决的警告日志。我该如何解决这个问题？

var options = new FirefoxOptions();
            options.AddArguments("--headless");
            IWebDriver driver = new FirefoxDriver(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), options);
            var link = "ANY LINK";

            driver.Navigate().GoToUrl(link);
            driver.FindElement(By.ClassName("ANY CLASS NAME")).Click(); 
            driver.Dispose();

这里有一些警告，因为图像链接损坏

1578640820834   [email protected]     WARN    Loading extension '[email protected]': Reading manifest: Invalid extension permission: mozillaAddons
1578640820834   [email protected]     WARN    Loading extension '[email protected]': Reading manifest: Invalid extension permission: telemetry
1578640820834   [email protected]     WARN    Loading extension '[email protected]': Reading manifest: Invalid extension permission: resource://pdf.js/
1578640820834   [email protected]     WARN    Loading extension '[email protected]': Reading manifest: Invalid extension permission: about:reader*
JavaScript error: resource://gre/modules/XULStore.jsm, line 66: Error: Can't find profile directory.
WARN: compileToBinary(259):
C:\fakepath(337,18-133): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(343,62-116): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(360,75-84): warning X3556: integer divides may be much slower, try using uints if possible.
C:\fakepath(363,50-59): warning X3556: integer modulus may be much slower, try using uints if possible.
C:\fakepath(383,33-90): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(174,1-6): warning X4000: use of potentially uninitialized variable (dyn_index_vec4_float4)
C:\fakepath(289,25-29): error X4576: Input array signature parameter  cannot be indexed dynamically.

WARN: compileToBinary(259):
C:\fakepath(337,18-133): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(343,62-116): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(360,75-84): warning X3556: integer divides may be much slower, try using uints if possible.
C:\fakepath(363,50-59): warning X3556: integer modulus may be much slower, try using uints if possible.
C:\fakepath(383,33-90): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(174,1-6): warning X4000: use of potentially uninitialized variable (dyn_index_vec4_float4)
C:\fakepath(289,25-29): error X4576: Input array signature parameter  cannot be indexed dynamically.

WARN: compileToBinary(259):
C:\fakepath(360,75-84): warning X3556: integer divides may be much slower, try using uints if possible.
C:\fakepath(363,50-59): warning X3556: integer modulus may be much slower, try using uints if possible.
C:\fakepath(174,1-6): warning X4000: use of potentially uninitialized variable (dyn_index_vec4_float4)
C:\fakepath(225,1): warning X4000: use of potentially uninitialized variable (f_distance_aa)
C:\fakepath(262,1): warning X4000: use of potentially uninitialized variable (f_do_clip)

[Child 7840, Chrome_ChildThread] WARNING: pipe error: 109: file z:/task_1572401533/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 341
[Ch1578640823372        Marionette      INFO    Listening on port 58853
1578640829566   Marionette      INFO    Stopped listening on port 58853
[Parent 18380, Gecko_IOThread] WARNING: pipe error: 109: file z:/task_1572401533/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 341
[Child 23108, Chrome_ChildThread] WARNING: pipe error: 109: file z:/task_1572401533/build/src/ipc/chromium/src/chrome/common/ipc_channel_win.cc, line 341
[GPU
###!!! [Child][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost

Answer 1

此警告消息...

WARN: compileToBinary(259):
C:\fakepath(337,18-133): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(343,62-116): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(360,75-84): warning X3556: integer divides may be much slower, try using uints if possible.
C:\fakepath(363,50-59): warning X3556: integer modulus may be much slower, try using uints if possible.
C:\fakepath(383,33-90): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
C:\fakepath(174,1-6): warning X4000: use of potentially uninitialized variable (dyn_index_vec4_float4)
C:\fakepath(289,25-29): error X4576: Input array signature parameter  cannot be indexed dynamically.
.
WARN: compileToBinary(259):
C:\fakepath(360,75-84): warning X3556: integer divides may be much slower, try using uints if possible.
C:\fakepath(363,50-59): warning X3556: integer modulus may be much slower, try using uints if possible.
C:\fakepath(174,1-6): warning X4000: use of potentially uninitialized variable (dyn_index_vec4_float4)
C:\fakepath(225,1): warning X4000: use of potentially uninitialized variable (f_distance_aa)
C:\fakepath(262,1): warning X4000: use of potentially uninitialized variable (f_do_clip)

...是启用Webrender时StdOut被C:\fakepath垃圾邮件的结果。

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分析

[在启用WebRender的情况下打开Firefox，并且如果捕获了stdout，则观察到了warning消息。这些warning消息是GPU -> ANGLE模块中WebRender中某些shader更改的结果。

我们已经在以下线程中详细分析并讨论了此问题：

• Mozilla-Bugzilla：StdOut is spammed with 'C:\fakepath' when Webrender is enabled
• 铬-错误：Issue 765576: WARNING:angle_platform_impl.cc(51)

最后，此问题已通过此merge / commit解决

---

解决方案

确保：

• 升级JDK到最近的级别JDK 8u222。
• 升级硒到当前水平Version 3.141.59。
• 升级GeckoDriver到GeckoDriver v0.26.0等级。
• GeckoDriver存在于所需位置。
• GeckoDriver具有非root用户的可执行权限。
• 将Firefox版本升级到Firefox v70.0级别。
• Clean您的Project Workspace通过您的IDE和Rebuild您的项目仅具有必需的依赖项。
• （仅限于[WindowsOS）在执行[[Test Suite之前和之后，使用CCleaner工具清除所有操作系统杂项。
（
• 仅适用于LinuxOS
）在执行[[Test Suite之前和之后Free Up and Release the Unused/Cached Memory in Ubuntu/Linux Mint。如果您的基本Web Client版本太旧，请通过Revo Uninstaller卸载它，并安装最新的GA和
• Web Client
的发行版本。进行系统重启。
• 以非root用户身份执行Test。>>总是在driver.quit()方法中调用tearDown(){}以正常关闭并销毁
• WebDriver
和
• Web Client
实例。