How do I write arbitrary text to the console in a spock test?

Question

While writing tests I sometimes just want to write text to the console for debugging.

How do I do this in a spock test? I tried using the logger but it's throwing an error:

import javaposse.jobdsl.dsl.DslScriptLoader
import javaposse.jobdsl.plugin.JenkinsJobManagement
import org.junit.ClassRule
import org.jvnet.hudson.test.JenkinsRule
import spock.lang.Shared
import spock.lang.Specification
import spock.lang.Unroll

import java.util.logging.Logger

class JobScriptsSpec extends Specification {
    @Shared
    @ClassRule
    JenkinsRule jenkinsRule = new JenkinsRule()

    Logger logger = Logger.getLogger("")

    @Unroll
    def 'test script #file.name'(File file) {
        given:
        def jobManagement = new JenkinsJobManagement(System.out, [:], new File('.'))

        when:
        new DslScriptLoader(jobManagement).runScript(file.text)

        then:
        noExceptionThrown()

        where:
        // This throws an error
        logger.info ("zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz")
        file << jobFiles
    }

    static List<File> getJobFiles() {
        List<File> files = []
        new File('jobs').eachFileRecurse {
            if (it.name.endsWith('.groovy')) {
                files << it
            }
        }
        files
    }
}

I recommend to give your questions some more love and not just say "it's throwing an error" but also quote the error. I did that for you in my answer, but actually it should be part of the question. — kriegaex, Jul 17 '20 at 02:28

kriegaex · Accepted Answer · 2020-07-17T11:32:59.527

Groovy behaves no different from Java in this regard. For the most part Groovy is a superset of Java syntax. So you can write System.out.println("hey") or do it the groovy way println "hey".

Using loggers is also fine. Maybe you should not log anything in the where: block because there Spock expects your data tables or data providers, not procedural code. Put the code into the block where it belongs, i.e. anywhere else but where:. Your logger.info "hey" should not even compile and the error you see should be:

Error:(18, 5) Groovyc:
  where-blocks may only contain parameterizations
  (e.g. 'salary << [1000, 5000, 9000]; salaryk = salary / 1000')

P.S.: Having seen your last two questions, I really recommend to first read a Groovy tutorial and then the Spock manual before asking more questions. No offence meant, I just want to help you help yourself.

How do I write arbitrary text to the console in a spock test?

1 Answers1