MySpec.groovy

class MySpeck extends Specification {

    def "check sum of two integer"() {
        given: "we have two integers, 10 and 20"
        def a = 10
        def b = 20

        when: "we add these two numbers"
        def c = a + b
        
        then: "the result must be 30"
        c == 30
    }