Spock groovy testy

Question

Witam, nie moge zrobic prostego testu poniewaz obiekt jest nullem mimo ze wywoluje na nim metode create(). Moze ktos mi pomoc bo od dluzszego czasu nie moge sobie z tym poradzic.

package pl.robert.project.bank_account

import spock.lang.Shared
import spock.lang.Specification

class BankAccountSpec extends Specification {

    @Shared
    private BankAccountFacade facade

    @Shared
    private BankAccountRepository repository

    @Shared
    private BankAccountFactory factory

    def setup() {
        repository = Mock(BankAccountRepository)
        factory = Mock(BankAccountFactory)

        facade = new BankAccountConfiguration().bankAccountFacade(
                repository,
                factory
        )
    }

    def 'should create bank account with given number'() {
        given:
            BankAccount account = factory.create('PL91 3018 4529 8669 0250 7367')
        expect:
            account.getNumber() == 'PL91 3018 4529 8669 0250 7367'
    }
}

<dependency>
        <groupId>org.spockframework</groupId>
         <artifactId>spock-core</artifactId>
         <version>1.2-groovy-2.5</version>
         <scope>test</scope>
</dependency>

Wrzucam link do repo https://github.com/RobertKrzywina/Bank-Web-Application.

Klasy javy znajduja sie w src/main/java/bank_account.