[FIXED] How to mock/spy Jenkins.insatance using spock

Issue

I have this code in my pipeline, now I want to add unit test for it using spock framework, the issue is how to mock or spy Jenkins.instance and all chaining methods.

 String deployPipeline = "Deploy/${projectID}/deploy-to-prod"
 def lastRelease = Jenkins.instance.getItemByFullName(deployPipeline).getLastSuccessfulBuild()

 String lastDeployedVersion = lastRelease.getBadgeActions().findResult {
    String text = it.getText()
    if (text != null && text.matches(/^Version\=/) != null) {
        return text.find(/\d+\.\d+\.\d+/)
    }
 }

Solution

I ended up something like this

        BuildBadgeAction badge1Mock = GroovyMock(BuildBadgeAction) {
            _.getText() >> "Version= 1.2.3"
            _.getDisplayName() >> "Version= 1.2.3"
        }

        BuildBadgeAction badge2Mock = GroovyMock(BuildBadgeAction) {
            _.getText() >> "badge-2"
            _.getDisplayName() >> "badge-2"
        }

        def runMock = GroovyMock(Run) {
            _.getBadgeActions() >> {
                return [badge1Mock, badge2Mock]
            }
        }

        Item itemMock = GroovyMock(Item) {
            _.getFullName() >> "job-1"
            _.getLastSuccessfulBuild() >> { 
                runMock
            }
        }        

        def jenkinsInstanceMock = GroovyMock(Jenkins) {
            _.getItemByFullName(_) >> { String fullName ->
            itemMock
        }

        GroovySpy(Jenkins, global: true, useObjenesis: true) {
            _.getInstance() >> jenkinsInstanceMock
        }

Answered By - Reza
Answer Checked By - Candace Johnson (JavaFixing Volunteer)