Problem:
How to share common assertions between tests in Spock Framework?
Solution:
Simple test illustrating helper methods to share assertions between tests.
package com.farenda.solved import spock.lang.Specification class ListWithHelperTest extends Specification { def "should be empty after removing element"() { given: def list = [42] // it's a List when: list.remove(0) then: // Spock can assert than an Exception was _NOT_ thrown: notThrown(IllegalArgumentException) // can call helper method here: doCommonAssertions(list) } // Assertion helpers have to have void return type and explicit asserts. def void doCommonAssertions(List<Integer> list) { // type is optional assert list != null assert list.isEmpty() } }