Using navigators in Spock's where block?

[jc]

Is it possible to use navigators in Spock's where block?  What I am trying to accomplish is to use one Unroll method to perform a test but the only thing that will change on the tests is the input field.  Whenever I try to run the test I get a NullPointerException.  Something like this. 

@Unroll
def "#field character limit"(){
    given:
    page = at ApplicantInformationPage

    when:
    input << text

    then:
    input.size() == limit

    where:
    field          |     text           |  limit  |  input
    "first name"   |   exceeds256limit  |   256   |  page.firstNameField
    "phone"        |   exceeds10limit   |   10    |  page.phoneNumberField
    "zip"          |   exceeds5limit    |   5     |  page.zipcodeField

Error I am getting:

java.lang.NullPointerException: Cannot get property 'firstNameField' on null object

at geb.tests.ApplicantInformationPageTest.#field character limit(ApplicantInformationPageTest.groovy)

 

Can anyone enlighten me as to what I may be doing wrong? 

[jc]

Looks like erdi already answered this on StackOverflow which was exactly what I was looking for: https://stackoverflow.com/questions/46960922/using-spock-data-tables-to-test-geb-page-objects

[Marcin Erdmann]

Good find, Jeremy. :)

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