list matching predicate

[vankeisb]

We often need to do some strict matching on lists, like checking that all elements satisfy a condition. For example, you have a String[] as the input and you want an elemList to match a criteria that's using the String[] contents :

String[] expectedTexts = ...
new Findr(...).elemList(...).eval(new Function<Object,List<WebElement>>() {

  Object apply(List<WebElement> input) {
    if (input.size()!=expectedTexts.length) {
      return false
    }

    for (int i=0; i<expectedTexts.length; i++) {
      if (!input.get(i).getText().equals(expectedTexts[i])
        return false
    }
    return true
  }
}

Of course we'd like the check to be arbitrary, like :

f.elemList(...).whereAllMatch(new f(List<WebElement> l, WebElement e, int index)...