[Webkit-unassigned] [Bug 282790] New: [WebDriver] Assertion failure when starting a second session after the first one exits

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=282790

            Bug ID: 282790
           Summary: [WebDriver] Assertion failure when starting a second
                    session after the first one exits
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebDriver
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lmoura at igalia.com
                CC: bburg at apple.com

285374 at main added a `SessionHost::browserTerminatedObserver`, to clean up the WebDriverBiDi WebSocket when the browser exits/terminates.

Steps to reproduce:

- Run multiple sequential sessions on the same WPEWebDriver instance in a debug build.

...
ASSERTION FAILED: !browserTerminatedObservers().contains(observer)
/home/lauro/wkdev-shared/dev/wk-webdriver/WebKit-WebDriver/Source/WebDriver/SessionHost.cpp(121) : void WebDriver::SessionHost::addBrowserTerminatedObserver(const BrowserTerminatedObserver&)
1   0x611e0c85d2aa WebDriver::SessionHost::addBrowserTerminatedObserver(WTF::Observer<void (WTF::String const&)> const&)
2   0x611e0c8710f5 WebDriver::WebDriverService::connectToBrowser(WTF::Vector<WebDriver::Capabilities, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&&, WTF::Function<void (WebDriver::CommandResult&&)>&&)
3   0x611e0c870d3d WebDriver::WebDriverService::newSession(WTF::RefPtr<WTF::JSONImpl::Object, WTF::RawPtrTraits<WTF::JSONImpl::Object>, WTF::DefaultRefDerefTraits<WTF::JSONImpl::Object> >&&, WTF::Function<void (WebDriver::CommandResult&&)>&&)
4   0x611e0c86a34f WebDriver::WebDriverService::handleRequest(WebDriver::HTTPRequestHandler::Request&&, WTF::Function<void (WebDriver::HTTPRequestHandler::Response&&)>&&)

Likely this was hidden by bug276266, which is preventing normal WebDriver debug runs. Note that to trigger the issue reported in this bug, you have to comment out the assertion in bug276266.

Patch incoming.

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