                 let tenMillisecondPollingJS = """
                 const checkFirstSectionPresence = () => {
                    if(document.querySelector('#section_heading_and_content_block_0')){
-                       window.webkit.messageHandlers.\(self.jsTestingMessageHandlerString).postMessage('\(self.firstSectionAppearedMessageString)')
+                       window.webkit.messageHandlers.\(self.testFirstSectionAppearanceMessageHandlerString).postMessage('\(self.testFirstSectionAppearedMessageString)')
                    }else{
                        setTimeout(checkFirstSectionPresence, 10 )
                    }

        }
        
        switch message.name {
        case jsTestingMessageHandlerString:
            switch messageString {
            case startTimeMessageString:
                startTimeMessageReceivedExpectation?.fulfill()
            case firstSectionAppearedMessageString:
                firstSectionAppearedMessageReceivedExpectation?.fulfill()
            default:
                return

        super.tearDown()
    }

    let testFirstSectionAppearanceMessageHandlerString = "testFirstSectionAppearance"
    let testFirstSectionAppearanceStartTimeMessageString = "startTime"
    let testFirstSectionAppearedMessageString = "firstSectionAppeared"
    
    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        // print("\n \n \n message body : \(message.body) \n \n \n ")
