coordinate.swift

private func coordinate(forWebViewElement element: XCUIElement) -> XCUICoordinate? {
    // wait for element to appear before searching
    wait(forWebViewElement: element)

    // parse description to find its frame
    let descr = element.firstMatch.debugDescription
    guard let rangeOpen = descr.range(of: "{{", options: [.backwards]),
        let rangeClose = descr.range(of: "}}", options: [.backwards]) else {
            return nil
    }

    let frameStr = String(descr[rangeOpen.lowerBound..<rangeClose.upperBound])
    let rect = CGRectFromString(frameStr)

    // get the center of rect
    let center = CGVector(dx: rect.midX, dy: rect.midY)
    let coordinate = XCUIApplication().coordinate(withNormalizedOffset: .zero).withOffset(center)
    return coordinate
}

func tap(onWebViewElement element: XCUIElement) {
    // xcode has bug, so we cannot directly access webViews XCUIElements
    // as workaround we can check debugDesciption, find frame and tap by coordinate
    let coord = coordinate(forWebViewElement: element)
    coord?.tap()
}

func exists(webViewElement element: XCUIElement) -> Bool {
    return coordinate(forWebViewElement: element) != nil
}