@Override
    public boolean isEnabled() {
        return getInput().isEnabled() && !PrimeSelenium.hasCssClass(this, "ui-state-disabled");
    }
Is this SelectOneMenu enabled?

@return true if enabled, false if not
primefaces-selenium/primefaces-selenium-components/src/main/java/org/primefaces/selenium/component/base/AbstractInputComponent.java