succeeds("build")
        executedAndNotSkipped ":compileJava", ":build"

        when:
        jarWithClasses(somelib, Thing: 'class Thing { public void foo () {} }')

        then:
        buildTriggeredAndSucceeded()
        executedAndNotSkipped ":compileJava"

        when:
        jarWithClasses(somelib, Thing: 'class Thing { public void bar() {} }')

        then:
        buildTriggeredAndSucceeded()

    def "reuses cached ClassLoaders"() {

        given: 'a Task that holds some static data'
        File staticDataLib = file("lib/StaticData.jar").tap {
            parentFile.mkdirs()
        }
        jarWithClasses(
            staticDataLib,
            StaticData: """
                import org.gradle.api.*;
                import org.gradle.api.tasks.*;
                import java.util.concurrent.atomic.AtomicInteger;